ONYX ACCEPTANCE CORP
S-8, 1998-11-24
PERSONAL CREDIT INSTITUTIONS
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<PAGE>   1

   As filed with the Securities and Exchange Commission on November 24, 1998
                                              Registration No. 333-_____________

================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 --------------

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                                 --------------

                           ONYX ACCEPTANCE CORPORATION
             (Exact name of registrant as specified in its charter)

                DELAWARE                              33-0577635
      (State or other jurisdiction         (IRS Employer Identification No.)
    of incorporation or organization)

          8001 IRVINE CENTER DRIVE, SUITE 500, IRVINE, CALIFORNIA 92718
               (Address of principal executive offices) (Zip code)

                                 --------------

                           ONYX ACCEPTANCE CORPORATION
                      1996 STOCK OPTION/STOCK ISSUANCE PLAN
                1998 NON-OFFICER STOCK OPTION/STOCK ISSUANCE PLAN
      SPECIAL OPTION GRANTS TO MESSRS. ANDERSON, BALDWIN, GIRALDIN, KELLY,
               LAWRENCE, LORTIE, MACINNIS, STOUT, AND MS. HOKANSON
                   PURSUANT TO WRITTEN COMPENSATION AGREEMENTS
                            (Full title of the Plans)

                                 --------------

                                  JOHN W. HALL
                 PRESIDENT, CHIEF EXECUTIVE OFFICER AND DIRECTOR
                           ONYX ACCEPTANCE CORPORATION
         8001 IRVINE CENTER DRIVE, SUITE 500, IRVINE, CALIFORNIA 92718
                    (Name and address of agent for service)
                                 (949) 450-5500
          (Telephone number, including area code, of agent for service)

                                 --------------

                         CALCULATION OF REGISTRATION FEE

================================================================================

<TABLE>
<CAPTION>
                                                             Proposed            Proposed
   Title of                                                  Maximum             Maximum
  Securities                            Amount              Offering             Aggregate          Amount of
     to be                              to be                 Price              Offering          Registration
  Registered                        Registered(1)          per Share(2)          Price(2)              Fee
  ----------                        --------------         ------------         -----------        ------------
<S>                                 <C>                    <C>                  <C>                <C>
Onyx Acceptance Corporation
1996 Stock Option/Stock 
  Issuance Plan
Common Stock,
$0.01 par value                     200,000 shares            $6.13             $1,226,000            $340.83

Onyx Acceptance Corporation
1998 Non-Officer Stock Option/
  Stock Issuance Plan
Common Stock,
$0.01 par value                     170,000 shares            $6.13             $1,042,100            $289.70
</TABLE>

<PAGE>   2

<TABLE>
<S>                                 <C>                    <C>                  <C>                  <C>
Special Option Grants 
Pursuant to Written 
Compensation Agreements
Common Stock,
$0.01 par value

Mr. Anderson                        1,000 shares               $7.25              $ 7,250            $ 2.02
Mr. Baldwin                         5,000 shares               $7.25              $36,250            $10.08
Mr. Giraldin                        5,000 shares               $7.25              $36,250            $10.08
Mr. Kelly                           10,000 shares              $7.25              $72,500            $20.16
Mr. Lawrence                        5,000 shares               $7.25              $36,250            $10.08
Mr. Lortie                          5,000 shares               $7.25              $36,250            $10.08
Mr. Macinnis                        5,000 shares               $7.25              $36,250            $10.08
Mr. Stout                           5,000 shares               $7.25              $36,250            $10.08
Ms. Hokanson                        1,000 shares               $7.25              $ 7,250            $ 2.02

                                                                     Aggregate Registration Fee: $715.21
</TABLE>

================================================================================

(1)   This Registration Statement shall also cover any additional shares of
      Common Stock which become issuable under the Onyx Acceptance Corporation
      1996 Stock Option/Stock Issuance Plan, the Onyx Acceptance Corporation
      1998 Non-Officer Stock Option/Stock Issuance Plan and the options granted
      to Messrs. Anderson, Baldwin, Giraldin, Kelly, Lawrence, Lortie, Macinnis,
      Stout and Ms. Hokanson pursuant to Written Compensation Agreements (the
      "Individual Options") by reason of any stock dividend, stock split,
      recapitalization or other similar transaction effected without the
      Registrant's receipt of consideration which results in an increase in the
      number of the outstanding shares of Registrant's Common Stock.

(2)   Calculated solely for purposes of this offering under Rule 457(h) of the
      Securities Act of 1933, as amended, (the "1933 Act"), on the basis of the
      average of the high and low selling prices per share of Registrant's
      Common Stock on November 18, 1998 as reported by the Nasdaq National
      Market.

================================================================================

<PAGE>   3
                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference

               Onyx Acceptance Corporation (the "Registrant") hereby
incorporates by reference into this Registration Statement the following
documents previously filed with the Securities and Exchange Commission (the
"Commission"):

        (a)    The Registrant's Annual Report on Form 10-K for the fiscal year
               ended December 31, 1997, filed with the Commission on March 31,
               1998;

        (b)    The Registrant's Quarterly Reports on Form 10-Q for the fiscal
               quarters ended March 31, 1998, June 30, 1998 and September 30,
               1998, filed with the Commission on May 15, 1998, August 14, 1998
               and November 16, 1998, respectively; and

        (c)    The Registrant's Registration Statement No. 000-28050 on Form
               8-A, filed with the Commission on May 5, 1996 and as subsequently
               amended on July 9, 1997, pursuant to Section 12 of the Securities
               and Exchange Act of 1934, as amended (the "1934 Act"), in which
               there is described the terms, rights and provisions applicable to
               the Registrant's outstanding Common Stock.

               All reports and definitive proxy or information statements filed
pursuant to Section 13(a), 13(c), 14 or 15(d) of the 1934 Act after the date of
this Registration Statement and prior to the filing of a post-effective
amendment which indicates that all securities offered hereby have been sold or
which deregisters all securities then remaining unsold shall be deemed to be
incorporated by reference into this Registration Statement and to be a part
hereof from the date of filing of such documents. Any statement contained in a
document incorporated or deemed to be incorporated by reference herein shall be
deemed to be modified or superseded for purposes of this Registration Statement
to the extent that a statement contained in any subsequently filed document
which also is deemed to be incorporated by reference herein modifies or
supersedes such statement. Any such statement so modified or superseded shall
not be deemed, except as so modified or superseded, to constitute a part of this
Registration Statement.

Item 4. Description of Securities

               Not applicable.

Item 5. Interests of Named Experts and Counsel

               Not applicable.

Item 6. Indemnification of Directors and Officers

               Under Section 145 of the Delaware General Corporation Law, the
Registrant can indemnify its directors and officers against liabilities they may
incur in such capacities, including liabilities under the Securities Act of
1933, as amended (the "1933 Act"). The Registrant's Bylaws provide that the
Registrant will indemnify its directors and officers to the fullest extent
permitted by law and require the Registrant to advance litigation expenses upon
receipt by the Registrant of an undertaking by the director or officer to repay
such advances if it is ultimately determined that such director or officer is
not entitled to indemnification. The Bylaws further provide that rights
conferred under such Bylaws do not exclude any other right such persons may have
or acquire under any bylaw, agreement, vote of stockholders or disinterested
directors or otherwise.
<PAGE>   4

               The Registrant's Certificate of Incorporation provides that,
pursuant to Delaware law, its directors shall not be liable for monetary damages
for breach of their fiduciary duty of care to the Registrant and its
stockholders. This provision in the Certificate of Incorporation does not
eliminate the duty of care, and in appropriate circumstances equitable remedies
such as injunctive or other forms of non-monetary relief will remain available
under Delaware law. In addition, each director will continue to be subject to
liability for (i) breach of his or her duty of loyalty to the Registrant or its
stockholders, (ii) acts or omissions not in good faith or involving intentional
misconduct or knowing violations of law, (iii) actions leading to improper
misconduct or knowing violations of law, (iv) actions leading to improper
personal benefit to the director, and (v) payment of dividends or approval of
stock repurchases or redemptions that are unlawful under Delaware law. The
provision also does not affect a director's responsibilities under any other
law, such as the federal securities laws or state or federal environmental laws.

               The Registrant has entered into agreements to indemnify its
directors in addition to the indemnification provided for in the Certificate of
Incorporation and Bylaws. These agreements will, among other things, indemnify
each of the Registrant's directors for certain expenses (including attorneys'
fees), judgments, fines and settlement amounts incurred by such person in any
action or proceeding, including any action by or in the right of the Registrant,
on account of services by such person as a director or officer of the
Registrant, or as a director or officer of any other company or enterprise to
which such person provides services at the request of the Registrant.

               The foregoing summary of the indemnification provisions contained
in the Registrant's Bylaws, Certificate of Incorporation and indemnification
agreements and of the Delaware Law is not intended to be exhaustive and is
respectively qualified in its entirety by such Bylaws, Certificate of
Incorporation, indemnification agreements and statutes.

Item 7. Exemption from Registration Claimed

               Not applicable.

Item 8. Exhibits

<TABLE>
<CAPTION>
    Exhibit
    Number      Exhibit
    -------     -------
    <S>         <C>
       4        Instruments Defining Rights of Stockholders. Reference is made
                to Registrant's Registration Statement No. 000-28050 on Form
                8-A, including the exhibits thereto, which are incorporated
                herein by reference pursuant to Item 3(c).

       5        Opinion and Consent of Brobeck, Phleger & Harrison LLP.

      23.1      Consent of PricewaterhouseCoopers LLP, Independent Auditors.

      23.2      Consent of Brobeck, Phleger & Harrison LLP is contained in
                Exhibit 5.

     24         Power of Attorney. Reference is made to page II-4 of this
                Registration Statement.

     99.1       Onyx Acceptance Corporation 1996 Stock Option/Stock Issuance
                Plan (As Amended and Restated April 23, 1998).

     99.2       Form of Stock Option Agreement.

     99.3*      Form of Notice of Grant.

     99.4       Form of Addendum to Stock Option Agreement (Limited Stock
                Appreciation Rights).

     99.5       Form of Addendum to Stock Option Agreement (Involuntary
                Termination).

     99.6       Form of Addendum to Stock Option Agreement (Special Tax
                Election).

     99.7       Form of Notice of Automatic Grant (Initial).

     99.8       Form of Notice of Automatic Grant (Annual).

     99.9       Form of Automatic Stock Option Agreement.

     99.10*     Form of Stock Issuance Agreement.

     99.11*     Form of Addendum to Stock Issuance Agreement (Involuntary
                Termination).

     99.12*     Form of Addendum to Stock Issuance Agreement (Special Tax
                Election).

     99.13      Onyx Acceptance Corporation 1998 Non-Officer Stock Option/Stock
                Issuance Plan.
</TABLE>


                                            II-2
<PAGE>   5

<TABLE>
    <S>         <C>
     99.14      Form of Stock Option Agreement.

     99.15      Form of Notice of Grant.

     99.16      Form of Addendum to Stock Option Agreement (Involuntary
                Termination).

     99.17      Form of Addendum to Stock Option Agreement (Special Tax
                Election).

     99.18      Form of Written Compensation Agreement.

     99.19      Form of Notice of Grant of Stock Option (Outside of Plan).

     99.20      Form of Stock Option Agreement (Outside of Plan).
</TABLE>

               *Exhibits 99.3, 99.10, 99.11 and 99.12 are incorporated herein by
reference to Exhibits 99.3, 99.10, 99.11 and 99.12, respectively, to
Registrant's Registration Statement No. 333-11453 on Form S-8, filed with the
Commission on September 5, 1996.

Item 9. Undertakings

               A. The undersigned Registrant hereby undertakes: (1) to file,
during any period in which offers or sales are being made, a post-effective
amendment to this Registration Statement (i) to include any prospectus required
by Section 10(a)(3) of the 1933 Act, (ii) to reflect in the prospectus any facts
or events arising after the effective date of the Registration Statement (or the
most recent post-effective amendment thereof) which, individually or in the
aggregate, represent a fundamental change in the information set forth in the
Registration Statement, and (iii) to include any material information with
respect to the plan of distribution not previously disclosed in the Registration
Statement or any material change to such information in the Registration
Statement; provided, however, that clauses (1)(i) and (1)(ii) shall not apply if
the information required to be included in a post-effective amendment by those
paragraphs is contained in periodic reports filed by the Registrant pursuant to
Section 13 or Section 15(d) of the 1934 Act that are incorporated by reference
into the Registration Statement; (2) that for the purpose of determining any
liability under the 1933 Act, each such post-effective amendment shall be deemed
to be a new registration statement relating to the securities offered therein
and the offering of such securities at that time shall be deemed to be the
initial bona fide offering thereof; and (3) to remove from registration by means
of a post-effective amendment any of the securities being registered which
remain unsold at the termination of the Registrant's 1996 Stock Option/Stock
Issuance Plan or 1998 Non-Officer Stock Option/Stock Issuance Plan or the
expiration of the Individual Options.

               B. The undersigned Registrant hereby undertakes that, for
purposes of determining any liability under the 1933 Act, each filing of the
Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
1934 Act that is incorporated by reference into the Registration Statement shall
be deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

               C. Insofar as indemnification for liabilities arising under the
1933 Act may be permitted to directors, officers or controlling persons of the
Registrant pursuant to the indemnification provisions summarized in Item 6 above
or otherwise, the Registrant has been informed that, in the opinion of the
Commission, such indemnification is against public policy as expressed in the
1933 Act, and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a director, officer or controlling
person of the Registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the 1933 Act and
will be governed by the final adjudication of such issue.


                                      II-3
<PAGE>   6

                                   SIGNATURES

               Pursuant to the requirements of the Securities Act of 1933, as
amended, the Registrant certifies that it has reasonable grounds to believe that
it meets all of the requirements for filing on Form S-8 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Irvine, State of California, on this 24th day
of November 1998.

                                       ONYX ACCEPTANCE CORPORATION

                                       By: /s/ John W. Hall
                                           -------------------------------------
                                           John W. Hall
                                           President, Chief Executive Officer 
                                             and Director

                                POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

               That the undersigned officers and directors of ONYX ACCEPTANCE
CORPORATION, a California corporation, do hereby constitute and appoint John W.
Hall and Don P. Duffy and each of them, the lawful attorneys and agents, with
full power and authority to do any and all acts and things and to execute any
and all instruments which said attorneys and agents, and any one of them,
determine may be necessary or advisable or required to enable said corporation
to comply with the Securities Act of 1933, as amended, and any rules or
regulations or requirements of the Securities and Exchange Commission in
connection with this Registration Statement. Without limiting the generality of
the foregoing power and authority, the powers granted include the power and
authority to sign the names of the undersigned officers and directors in the
capacities indicated below to this Registration Statement, to any and all
amendments, both pre-effective and post-effective, and supplements to this
Registration Statement, and to any and all instruments or documents filed as
part of or in conjunction with this Registration Statement or amendments or
supplements thereof, and each of the undersigned hereby ratifies and confirms
all that said attorneys and agents, or any of them, shall do or cause to be done
by virtue hereof. This Power of Attorney may be signed in several counterparts.

               IN WITNESS WHEREOF, each of the undersigned has executed this
Power of Attorney as of the date indicated.

               Pursuant to the requirements of the Securities Act of 1933, as
amended, this Registration Statement has been signed below by the following
persons in the capacities and on the dates indicated.


<TABLE>
<CAPTION>
Signatures                               Title                                  Date
- ----------                               -----                                  ----
<S>                                      <C>                                    <C>
/s/ John W. Hall                         President, Chief Executive             November 24, 1998
- -----------------------------------      Officer and Director
John W. Hall                             (Principal Executive Officer)
</TABLE>


                                      II-4
<PAGE>   7

<TABLE>
<CAPTION>
Signatures                               Title                                  Date
- ----------                               -----                                  ----
<S>                                      <C>                                    <C>
/s/ Don P. Duffy                         Executive Vice President               November 24, 1998
- -----------------------------------      and Chief Financial Officer
Don P. Duffy                             (Principal Financial and 
                                         Accounting Officer)

/s/ Thomas C. Stickel                    Chairman of the Board of Directors     November 24, 1998
- -----------------------------------
Thomas C. Stickel

                                         Secretary and Director                            , 1998
- -----------------------------------
Bruce R. Hallett

/s/ Robert A. Hoff                       Director                               November 24, 1998
- -----------------------------------
Robert A. Hoff

                                         Director                                          , 1998
- -----------------------------------
G. Bradford Jones

/s/ C. Thomas Meyers                     Director                               November 24, 1998
- -----------------------------------
C. Thomas Meyers
</TABLE>


                                      II-5
<PAGE>   8
                       SECURITIES AND EXCHANGE COMMISSION
                                WASHINGTON, D.C.

                                    EXHIBITS

                                       TO

                                    FORM S-8

                                      UNDER

                             SECURITIES ACT OF 1933

                           ONYX ACCEPTANCE CORPORATION

<PAGE>   9
                                  EXHIBIT INDEX

<TABLE>
<CAPTION>
    Exhibit
    Number      Exhibit
    -------     -------
    <S>         <C>
       4        Instruments Defining Rights of Stockholders. Reference is made
                to Registrant's Registration Statement No. 000-28050 on Form
                8-A, including the exhibits thereto, which are incorporated
                herein by reference pursuant to Item 3(c).

       5        Opinion and Consent of Brobeck, Phleger & Harrison LLP.

      23.1      Consent of PricewaterhouseCoopers LLP, Independent Auditors.

      23.2      Consent of Brobeck, Phleger & Harrison LLP is contained in
                Exhibit 5.

     24         Power of Attorney. Reference is made to page II-4 of this
                Registration Statement.

     99.1       Onyx Acceptance Corporation 1996 Stock Option/Stock Issuance
                Plan (As Amended and Restated April 23, 1998).

     99.2       Form of Stock Option Agreement.

     99.3*      Form of Notice of Grant.

     99.4       Form of Addendum to Stock Option Agreement (Limited Stock
                Appreciation Rights).

     99.5       Form of Addendum to Stock Option Agreement (Involuntary
                Termination).

     99.6       Form of Addendum to Stock Option Agreement (Special Tax
                Election).

     99.7       Form of Notice of Automatic Grant (Initial).

     99.8       Form of Notice of Automatic Grant (Annual).

     99.9       Form of Automatic Stock Option Agreement.

     99.10*     Form of Stock Issuance Agreement.

     99.11*     Form of Addendum to Stock Issuance Agreement (Involuntary
                Termination).

     99.12*     Form of Addendum to Stock Issuance Agreement (Special Tax
                Election).

     99.13      Onyx Acceptance Corporation 1998 Non-Officer Stock Option/Stock
                Issuance Plan.

     99.14      Form of Stock Option Agreement.

     99.15      Form of Notice of Grant.

     99.16      Form of Addendum to Stock Option Agreement (Involuntary
                Termination).

     99.17      Form of Addendum to Stock Option Agreement (Special Tax
                Election).

     99.18      Form of Written Compensation Agreement.

     99.19      Form of Notice of Grant of Stock Option (Outside of Plan).

     99.20      Form of Stock Option Agreement (Outside of Plan).
</TABLE>

          *Exhibits 99.3, 99.10, 99.11 and 99.12 are incorporated herein by
reference to Exhibits 99.3, 99.10, 99.11 and 99.12, respectively, to
Registrant's Registration Statement No. 333-11453 on Form S-8, filed with the
Commission on September 5, 1996.

<PAGE>   1
                                                                       EXHIBIT 5

                               November 24, 1998

Onyx Acceptance Corporation
8001 Irvine Center Drive, Suite 500
Irvine, California  92718

   Re:  ONYX ACCEPTANCE CORPORATION (the "Company")
        Registration Statement for Registration
        of an Aggregate of 412,000 Shares of Common Stock

Ladies and Gentlemen:

        We have acted as counsel to Onyx Acceptance Corporation, a Delaware
corporation (the "Company"), in connection with the registration on Form S-8
(the "Registration Statement") under the Securities Act of 1933, as amended, of
(i) an additional 200,000 shares of the Company's common stock for issuance
under the Company's 1996 Stock Option/Stock Issuance Plan (the "1996 Plan"),
(ii) 170,000 shares of the Company's common stock for issuance under the
Company's 1998 Non-Officer Stock Option/Stock Issuance Plan (the "1998 Plan")
and (iii) 42,000 shares of the Company's common stock under the special option
grants made pursuant to written compensation agreements with Messrs. Anderson,
Baldwin, Giraldin, Kelly, Lawrence, Lortie, Macinnis, Stout and Ms. Hokanson
(the "Individual Options").

        This opinion is being furnished in accordance with the requirements of
Item 8 of Form S-8 and Item 601(b)(5)(i) of Regulation S-K.

        We have reviewed the Company's charter documents and the corporate
proceedings taken by the Company in connection with the establishment and
amendment of the 1996 Plan, the establishment of the 1998 Plan and the
implementation of the Individual Options. Based on such review, we are of the
opinion that, if, as and when the shares of the Company's common stock are
issued and sold (and the consideration therefor received) pursuant to (a) the
provisions of option agreements duly authorized under the 1996 Plan, the 1998
Plan and the Individual Options and in accordance with the Registration
Statement, or (b) duly authorized direct stock issuances in accordance with the
1996 Plan or the 1998 Plan and in accordance with the Registration Statement,
such shares will be duly authorized, legally issued, fully paid and
nonassessable.

        We consent to the filing of this opinion letter as Exhibit 5 to the
Registration Statement.

        This opinion letter is rendered as of the date first written above, and
we disclaim any obligation to advise you of facts, circumstances, events or
developments which hereafter may be brought to our attention and which may
alter, affect or modify the opinion expressed herein. Our opinion is expressly
limited to the matters set forth above, and we render no opinion, whether by
implication or otherwise, as to any other matters relating to the Company, the
1996 Plan, the 1998 Plan, the Individual Options or the shares of the Company's
common stock issuable under such plans or options.

                                    Very truly yours,


                                    /s/ BROBECK, PHLEGER & HARRISON LLP


                                    BROBECK, PHLEGER & HARRISON LLP


<PAGE>   1

                                                                    EXHIBIT 23.1

                       CONSENT OF INDEPENDENT ACCOUNTANTS


We consent to the incorporation by reference in the registration statement of 
Onyx Acceptance Corporation, on Form S-8 (File No. 333-     ) of our report 
dated January 23, 1998, on our audits of the consolidated financial statements
of Onyx Acceptance Corporation.

                                        PricewaterhouseCoopers LLP

Newport Beach, California
November 18, 1998


<PAGE>   1
                                                                    EXHIBIT 99.1




                           ONYX ACCEPTANCE CORPORATION
                      1996 STOCK OPTION/STOCK ISSUANCE PLAN

                    (AS AMENDED AND RESTATED APRIL 23, 1998)

                                   ARTICLE ONE

                               GENERAL PROVISIONS



     I. PURPOSE OF THE PLAN

                  This 1996 Stock Option/Stock Issuance Plan is intended to
promote the interests of Onyx Acceptance Corporation, a Delaware corporation, by
providing eligible persons with the opportunity to acquire a proprietary
interest, or otherwise increase their proprietary interest, in the Corporation
as an incentive for them to remain in the service of the Corporation.

                  Capitalized terms shall have the meanings assigned to such
terms in the attached Appendix.

     II. STRUCTURE OF THE PLAN

                  A. The Plan shall be divided into three separate equity
programs:

                                (i) the Discretionary Option Grant Program under
         which eligible persons may, at the discretion of the Plan
         Administrator, be granted options to purchase shares of Common Stock,

                                (ii) the Stock Issuance Program under which
         eligible persons may, at the discretion of the Plan Administrator, be
         issued shares of Common Stock directly, either through the immediate
         purchase of such shares or as a bonus for services rendered the
         Corporation (or any Parent or Subsidiary), and

                                (iii) the Automatic Option Grant Program under
         which Eligible Directors shall automatically receive option grants at
         periodic intervals to purchase shares of Common Stock.

                  B. The provisions of Articles One and Five shall apply to all
equity programs under the Plan and shall accordingly govern the interests of all
persons under the Plan.
<PAGE>   2
     III. ADMINISTRATION OF THE PLAN

                  A. The Primary Committee shall have sole and exclusive
authority to administer the Discretionary Option Grant and Stock Issuance
Programs with respect to Section 16 Insiders. Administration of the
Discretionary Option Grant and Stock Issuance Programs with respect to all other
persons eligible to participate in those programs may, at the Board's
discretion, be vested in the Primary Committee or a Secondary Committee, or the
Board may retain the power to administer those programs with respect to all such
persons. The members of the Secondary Committee may be Board members who are
Employees eligible to receive discretionary option grants or direct stock
issuances under the Plan or any other stock option, stock appreciation, stock
bonus or other stock plan of the Corporation (or any Parent or Subsidiary).

                  B. Members of the Primary Committee or any Secondary Committee
shall serve for such period of time as the Board may determine and may be
removed by the Board at any time. The Board may also at any time terminate the
functions of any Secondary Committee and reassume all powers and authority
previously delegated to such committee.

                  C. Each Plan Administrator shall, within the scope of its
administrative functions under the Plan, have full power and authority to
establish such rules and regulations as it may deem appropriate for proper
administration of the Discretionary Option Grant and Stock Issuance Programs and
to make such determinations under, and issue such interpretations of, the
provisions of such programs and any outstanding options or stock issuances
thereunder as it may deem necessary or advisable. Decisions of the Plan
Administrator within the scope of its administrative functions under the Plan
shall be final and binding on all parties who have an interest in the
Discretionary Option Grant or Stock Issuance Program under its jurisdiction or
any option or stock issuance thereunder.

                  D. Service on the Primary Committee or the Secondary Committee
shall constitute service as a Board member, and members of each such committee
shall accordingly be entitled to full indemnification and reimbursement as Board
members for their service on such committee. No member of the Primary Committee
or the Secondary Committee shall be liable for any act or omission made in good
faith with respect to the Plan or any option grants or stock issuances under the
Plan.

                  E. Administration of the Automatic Option Grant Program shall
be self-executing in accordance with the terms of that program, and no Plan
Administrator shall exercise any discretionary functions with respect to option
grants made thereunder.

     IV. ELIGIBILITY

                  A. The persons eligible to participate in the Discretionary
Option Grant and Stock Issuance Programs are as follows:

                                 (i) Employees,

                                (ii) non-employee  members  of the Board or the
         board of  directors of any Parent or Subsidiary, and



                                       2
<PAGE>   3
                               (iii) consultants and other independent advisors
         who provide services to the Corporation (or any Parent or Subsidiary).

                  B. Each Plan Administrator shall, within the scope of its
administrative jurisdiction under the Plan, have full authority (subject to the
provisions of the Plan) to determine, (i) with respect to the option grants
under the Discretionary Option Grant Program, which eligible persons are to
receive option grants, the time or times when such option grants are to be made,
the number of shares to be covered by each such grant, the status of the granted
option as either an Incentive Option or a Non-Statutory Option, the time or
times at which each option is to become exercisable, the vesting schedule (if
any) applicable to the option shares and the maximum term for which the option
is to remain outstanding and (ii) with respect to stock issuances under the
Stock Issuance Program, which eligible persons are to receive stock issuances,
the time or times when such issuances are to be made, the number of shares to be
issued to each Participant, the vesting schedule (if any) applicable to the
issued shares and the consideration to be paid for such shares.

                  C. The Plan Administrator shall have the absolute discretion
either to grant options in accordance with the Discretionary Option Grant
Program or to effect stock issuances in accordance with the Stock Issuance
Program.

                  D. The individuals eligible to participate in the Automatic
Option Grant Program shall be limited to those individuals who are serving as
non-employee Board members on the Automatic Option Grant Program Effective Date
and those individuals who first become non-employee Board members after such
date, whether through appointment by the Board or election by the Corporation's
stockholders. A non-employee Board member who has previously been in the employ
of the Corporation (or any Parent or Subsidiary) shall not be eligible to
receive an initial option grant under the Automatic Option Grant Program on the
Automatic Option Grant Program Effective Date or at the time he or she first
becomes a non-employee Board member, but such individual shall be eligible to
receive periodic option grants under the Automatic Option Grant Program upon his
or her continued service as a non-employee Board member after one or more Annual
Stockholders Meetings.

     V. STOCK SUBJECT TO THE PLAN

                  A. The stock issuable under the Plan shall be shares of
authorized but unissued or reacquired Common Stock, including shares repurchased
by the Corporation on the open market. The maximum number of shares of Common
Stock which may be issued over the term of the Plan shall not exceed 1,333,304
shares. Such authorized share reserve is comprised of (i) the initial share
reserve of 600,000 shares approved for the Plan prior to the Section 12(g)
Registration Date, (ii) the number of shares which remained available for
issuance, as of the Section 12(g) Registration Date, under the Predecessor Plans
as last approved by the Corporation's stockholders, including the shares subject
to the outstanding options incorporated into the Plan and any other shares which
would have been available for future option grants under the Predecessor Plans
and (iii) an additional increase of 200,000 shares approved by the Board on
April 23, 1998, subject to stockholder approval.



                                       3
<PAGE>   4
                  B. The number of shares of Common Stock available for issuance
under the Plan shall automatically increase on the first trading day of each
calendar year during the term of the Plan, beginning with the 1999 calendar
year, by an amount equal to three percent (3%) of the shares of Common Stock
outstanding on the last trading day of the immediately preceding calendar year.
No Incentive Options may be granted on the basis of the additional shares of
Common Stock resulting from such annual increases.

                  C. No one person participating in the Plan may receive
options, separately exercisable stock appreciation rights and direct stock
issuances for more than 500,000 shares of Common Stock in the aggregate over the
term of the Plan.

                  D. Shares of Common Stock subject to outstanding options shall
be available for subsequent issuance under the Plan to the extent (i) the
options (including any options incorporated from the Predecessor Plans) expire
or terminate for any reason prior to exercise in full or (ii) the options are
cancelled in accordance with the cancellation-regrant provisions of Article Two.
Unvested shares issued under the Plan and subsequently cancelled or repurchased
by the Corporation, at the original issue price paid per share, pursuant to the
Corporation's repurchase rights under the Plan shall be added back to the number
of shares of Common Stock reserved for issuance under the Plan and shall
accordingly be available for reissuance through one or more subsequent option
grants or direct stock issuances under the Plan. However, should the exercise
price of an option under the Plan (including any option incorporated from the
Predecessor Plans) be paid with shares of Common Stock or should shares of
Common Stock otherwise issuable under the Plan be withheld by the Corporation in
satisfaction of the withholding taxes incurred in connection with the exercise
of an option or the vesting of a stock issuance under the Plan, then the number
of shares of Common Stock available for issuance under the Plan shall be reduced
by the gross number of shares for which the option is exercised or which vest
under the stock issuance, and not by the net number of shares of Common Stock
issued to the holder of such option or stock issuance.

                  E. Should any change be made to the Common Stock by reason of
any stock split, stock dividend, recapitalization, combination of shares,
exchange of shares or other change affecting the outstanding Common Stock as a
class without the Corporation's receipt of consideration, appropriate
adjustments shall be made to (i) the maximum number and/or class of securities
issuable under the Plan, (ii) the number and/or class of securities for which
any one person may be granted options, separately exercisable stock appreciation
rights and direct stock issuances over the term of the Plan, (iii) the number
and/or class of securities for which automatic option grants are to be made
subsequently per Eligible Director under the Automatic Option Grant Program and
(iv) the number and/or class of securities and the exercise price per share in
effect under each outstanding option (including any option incorporated from the
Predecessor Plans) in order to prevent the dilution or enlargement of benefits
thereunder. The adjustments determined by the Plan Administrator shall be final,
binding and conclusive.



                                       4
<PAGE>   5
                                   ARTICLE TWO

                       DISCRETIONARY OPTION GRANT PROGRAM


     I. OPTION TERMS

                  Each option shall be evidenced by one or more documents in the
form approved by the Plan Administrator; provided, however, that each such
document shall comply with the terms specified below. Each document evidencing
an Incentive Option shall, in addition, be subject to the provisions of the Plan
applicable to such options.

                  A. Exercise Price.

                           1. The exercise price per share shall be fixed by the
Plan Administrator but shall not be less than eighty-five percent (85%) of the
Fair Market Value per share of Common Stock on the option grant date.

                           2. The exercise price shall become immediately due
upon exercise of the option and shall, subject to the provisions of Section I of
Article Five and the documents evidencing the option, be payable in one or more
of the forms specified below:

                                (i) cash or check made payable to the
         Corporation,

                                (ii) shares of Common Stock held for the
         requisite period necessary to avoid a charge to the Corporation's
         earnings for financial reporting purposes and valued at Fair Market
         Value on the Exercise Date, or

                                (iii) to the extent the option is exercised for
         vested shares, through a special sale and remittance procedure pursuant
         to which the Optionee shall concurrently provide irrevocable written
         instructions to (a) a Corporation-designated brokerage firm to effect
         the immediate sale of the purchased shares and remit to the
         Corporation, out of the sale proceeds available on the settlement date,
         sufficient funds to cover the aggregate exercise price payable for the
         purchased shares plus all applicable Federal, state and local income
         and employment taxes required to be withheld by the Corporation by
         reason of such exercise and (b) the Corporation to deliver the
         certificates for the purchased shares directly to such brokerage firm
         in order to complete the sale.

                  Except to the extent such sale and remittance procedure is
utilized, payment of the exercise price for the purchased shares must be made on
the Exercise Date.

                  B. Exercise and Term of Options. Each option shall be
exercisable at such time or times, during such period and for such number of
shares as shall be determined by the Plan Administrator and set forth in the
documents evidencing the option. However, no option shall have a term in excess
of ten (10) years measured from the option grant date.



                                       5
<PAGE>   6

                  C. Effect of Termination of Service.

                           1. The following provisions shall govern the exercise
of any options held by the at the time of cessation of Service or death:

                                (i) Any option outstanding at the time of the
         Optionee's cessation of Service for any reason shall remain exercisable
         for such period of time thereafter as shall be determined by the Plan
         Administrator and set forth in the documents evidencing the option, but
         no such option shall be exercisable after the expiration of the option
         term.

                                (ii) Any option exercisable in whole or in part
         by the Optionee at the time of death may be exercised subsequently by
         the personal representative of the Optionee's estate or by the person
         or persons to whom the option is transferred pursuant to the Optionee's
         will or in accordance with the laws of descent and distribution.

                                (iii) During the applicable post-Service
         exercise period, the option may not be exercised in the aggregate for
         more than the number of vested shares for which the option is
         exercisable on the date of the Optionee's cessation of Service. Upon
         the expiration of the applicable exercise period or (if earlier) upon
         the expiration of the option term, the option shall terminate and cease
         to be outstanding for any vested shares for which the option has not
         been exercised. However, the option shall, immediately upon the
         Optionee's cessation of Service, terminate and cease to be outstanding
         to the extent the option is not otherwise at that time exercisable for
         vested shares.

                                (iv) Should the Optionee's Service be terminated
         for Misconduct, then all outstanding options held by the Optionee shall
         terminate immediately and cease to be outstanding.

                                (v) In the event of an Involuntary Termination
         following a Corporate Transaction, the provisions of Section III of
         this Article Two shall govern the period for which the outstanding
         options are to remain exercisable following the Optionee's cessation of
         Service and shall supersede any provisions to the contrary in this
         section.

                           2. The Plan Administrator shall have the discretion,
exercisable either at the an option is granted or at any time while the option
remains outstanding, to:

                                (i) extend the period of time for which the
         option is to remain exercisable following the Optionee's cessation of
         Service from the period otherwise in effect for that option to such
         greater period of time as the Plan Administrator shall deem
         appropriate, but in no event beyond the expiration of the option term,
         and/or



                                       6
<PAGE>   7
                                (ii) permit the option to be exercised, during
         the applicable post-Service exercise period, not only with respect to
         the number of vested shares of Common Stock for which such option is
         exercisable at the time of the Optionee's cessation of Service but also
         with respect to one or more additional installments in which the
         Optionee would have vested under the option had the Optionee continued
         in Service.

                  D. Stockholder Rights. The holder of an option shall have no
stockholder rights with respect to the shares subject to the option until such
person shall have exercised the option, paid the exercise price and become a
holder of record of the purchased shares.

                  E. Repurchase Rights. The Plan Administrator shall have the
discretion to grant options which are exercisable for unvested shares of Common
Stock. Should the Optionee cease Service while holding such unvested shares, the
Corporation shall have the right to repurchase, at the exercise price paid per
share, any or all of those unvested shares. The terms upon which such repurchase
right shall be exercisable (including the period and procedure for exercise and
the appropriate vesting schedule for the purchased shares) shall be established
by the Plan Administrator and set forth in the document evidencing such
repurchase right.

                  F. Limited Transferability of Options. During the lifetime of
the Optionee, the option shall be exercisable only by the Optionee and shall not
be assignable or transferable other than by will or by the laws of descent and
distribution following the Optionee's death. However, a Non-Qualified Option
may, in connection with the Optionee's estate plan, be assigned in whole or in
part during the Optionee's lifetime to one or more members of the Optionee's
immediate family or to a trust established exclusively for one or more such
family members. The assigned portion may only be exercised by the person or
persons who acquire a proprietary interest in the option pursuant to the
assignment. The terms applicable to the assigned portion shall be the same as
those in effect for the option immediately prior to such assignment and shall be
set forth in such documents issued to the assignee as the Plan Administrator may
deem appropriate.

     II. INCENTIVE OPTIONS

                  The terms specified below shall be applicable to all Incentive
Options. Except as modified by the provisions of this Section II, all the
provisions of Articles One, Two and Five shall be applicable to Incentive
Options. Options which are specifically designated as Non-Statutory Options when
issued under the Plan shall not be subject to the terms of this Section II.

                  A. Eligibility. Incentive Options may only be granted to 
Employees.

                  B. Exercise Price. The exercise price per share shall not be
less than one hundred percent (100%) of the Fair Market Value per share of
Common Stock on the option grant date.

                  C. Dollar Limitation. The aggregate Fair Market Value of the
shares of Common Stock (determined as of the respective date or dates of grant)
for which one or more options granted to any Employee under the Plan (or any
other option plan of the Corporation or any Parent or Subsidiary) may for the
first time become exercisable as Incentive Options during



                                       7
<PAGE>   8
any one (1) calendar year shall not exceed the sum of One Hundred Thousand
Dollars ($100,000). To the extent the Employee holds two (2) or more such
options which become exercisable for the first time in the same calendar year,
the foregoing limitation on the exercisability of such options as Incentive
Options shall be applied on the basis of the order in which such options are
granted.

                  D. 10% Stockholder. If any Employee to whom an Incentive
Option is granted is a 10% Stockholder, then the exercise price per share shall
not be less than one hundred ten percent (110%) of the Fair Market Value per
share of Common Stock on the option grant date, and the option term shall not
exceed five (5) years measured from the option grant date.

     III. CORPORATE TRANSACTION/CHANGE IN CONTROL

                  A. In the event of any Corporate Transaction, each outstanding
option shall automatically accelerate so that each such option shall,
immediately prior to the effective date of the Corporate Transaction, become
fully exercisable for all of the shares of Common Stock at the time subject to
such option and may be exercised for any or all of those shares as fully-vested
shares of Common Stock. However, an outstanding option shall NOT so accelerate
if and to the extent: (i) such option is, in connection with the Corporate
Transaction, either to be assumed by the successor corporation (or parent
thereof) or to be replaced with a comparable option to purchase shares of the
capital stock of the successor corporation (or parent thereof), (ii) such option
is to be replaced with a cash incentive program of the successor corporation
which preserves the spread existing on the unvested option shares at the time of
the Corporate Transaction and provides for subsequent payout in accordance with
the same vesting schedule applicable to such option or (iii) the acceleration of
such option is subject to other limitations imposed by the Plan Administrator at
the time of the option grant. The determination of option comparability under
clause (i) above shall be made by the Plan Administrator, and its determination
shall be final, binding and conclusive.

                  B. All outstanding repurchase rights shall also terminate
automatically, and the shares of Common Stock subject to those terminated rights
shall immediately vest in full, in the event of any Corporate Transaction,
except to the extent: (i) those repurchase rights are to be assigned to the
successor corporation (or parent thereof) in connection with such Corporate
Transaction or (ii) such accelerated vesting is precluded by other limitations
imposed by the Plan Administrator at the time the repurchase right is issued.

                  C. The Plan Administrator shall have the discretion,
exercisable either at the time the option is granted or at any time while the
option remains outstanding, to provide for the automatic acceleration of one or
more outstanding options (and the automatic termination of one or more
outstanding repurchase rights with the immediate vesting of the shares of Common
Stock subject to those rights) upon the occurrence of a Corporate Transaction,
whether or not those options are to be assumed or replaced (or those repurchase
rights are to be assigned) in the Corporate Transaction. The Plan Administrator
shall also have the discretion to grant options which do not accelerate whether
or not such options are assumed (and to provide for repurchase rights that do
not terminate whether or not such rights are assigned) in connection with a
Corporate Transaction.



                                       8
<PAGE>   9
                  D. Immediately following the consummation of the Corporate
Transaction, all outstanding options shall terminate and cease to be
outstanding, except to the extent assumed by the successor corporation (or
parent thereof).

                  E. Each option which is assumed in connection with a Corporate
Transaction shall be appropriately adjusted, immediately after such Corporate
Transaction, to apply to the number and class of securities which would have
been issuable to the Optionee in consummation of such Corporate Transaction had
the option been exercised immediately prior to such Corporate Transaction.
Appropriate adjustments shall also be made to (i) the number and class of
securities available for issuance under the Plan following the consummation of
such Corporate Transaction, (ii) the exercise price payable per share under each
outstanding option, provided the aggregate exercise price payable for such
securities shall remain the same and (iii) the maximum number of securities
and/or class of securities for which any one person may be granted stock
options, separately exercisable stock appreciation rights and direct stock
issuances under the Plan per calendar year.

                  F. Any options which are assumed or replaced in the Corporate
Transaction and do not otherwise accelerate at that time shall automatically
accelerate (and any of the Corporation's outstanding repurchase rights which do
not otherwise terminate at the time of the Corporate Transaction shall
automatically terminate and the shares of Common Stock subject to those
terminated rights shall immediately vest in full) in the event the Optionee's
Service should subsequently terminate by reason of an Involuntary Termination
within eighteen (18) months following the effective date of such Corporate
Transaction. Any options so accelerated shall remain exercisable for
fully-vested shares until the earlier of (i) the expiration of the option term
or (ii) the expiration of the one (1)-year period measured from the effective
date of the Involuntary Termination.

                  G. The Plan Administrator shall have the discretion,
exercisable either at the time the option is granted or at any time while the
option remains outstanding, to (i) provide for the automatic acceleration of one
or more outstanding options (and the automatic termination of one or more
outstanding repurchase rights with the immediate vesting of the shares of Common
Stock subject to those rights) upon the occurrence of a Change in Control or
(ii) condition any such option acceleration (and the termination of any
outstanding repurchase rights) upon the subsequent Involuntary Termination of
the Optionee's Service within a specified period following the effective date of
such Change in Control. Any options accelerated in connection with a Change in
Control shall remain fully exercisable until the expiration or sooner
termination of the option term.

                  H. The portion of any Incentive Option accelerated in
connection with a Corporate Transaction or Change in Control shall remain
exercisable as an Incentive Option only to the extent the applicable One Hundred
Thousand Dollar ($100,000) limitation is not exceeded. To the extent such dollar
limitation is exceeded, the accelerated portion of such option shall be
exercisable as a Non-Statutory Option under the Federal tax laws.



                                       9
<PAGE>   10
                  I. The grant of options under the Discretionary Option Grant
Program shall in no way affect the right of the Corporation to adjust,
reclassify, reorganize or otherwise change its capital or business structure or
to merge, consolidate, dissolve, liquidate or sell or transfer all or any part
of its business or assets.

     IV. CANCELLATION AND REGRANT OF OPTIONS

                  The Plan Administrator shall have the authority to effect, at
any time and from time to time, with the consent of the affected option holders,
the cancellation of any or all outstanding options under the Discretionary
Option Grant Program (including outstanding options incorporated from the
Predecessor Plan) and to grant in substitution new options covering the same or
different number of shares of Common Stock but with an exercise price per share
based on the Fair Market Value per share of Common Stock on the new grant date.

     V. STOCK APPRECIATION RIGHTS

                  A. The Plan Administrator shall have full power and authority
to grant to selected Optionees tandem stock appreciation rights and/or limited
stock appreciation rights.

                  B. The following terms shall govern the grant and exercise of
tandem stock appreciation rights:

                                (i) One or more Optionees may be granted the
         right, exercisable upon such terms as the Plan Administrator may
         establish, to elect between the exercise of the underlying option for
         shares of Common Stock and the surrender of that option in exchange for
         a distribution from the Corporation in an amount equal to the excess of
         (a) the Fair Market Value (on the option surrender date) of the number
         of shares in which the Optionee is at the time vested under the
         surrendered option (or surrendered portion thereof) over (b) the
         aggregate exercise price payable for such shares.

                                (ii) No such option surrender shall be effective
         unless it is approved by the Plan Administrator. If the surrender is so
         approved, then the distribution to which the Optionee shall be entitled
         may be made in shares of Common Stock valued at Fair Market Value on
         the option surrender date, in cash, or partly in shares and partly in
         cash, as the Plan Administrator shall in its sole discretion deem
         appropriate.

                                (iii) If the surrender of an option is rejected
         by the Plan Administrator, then the Optionee shall retain whatever
         rights the Optionee had under the surrendered option (or surrendered
         portion thereof) on the option surrender date and may exercise such
         rights at any time prior to the later of (a) five (5) business days
         after the receipt of the rejection notice or (b) the last day on which
         the option is otherwise exercisable in accordance with the terms of the
         documents evidencing such option, but in no event may such rights be
         exercised more than ten (10) years after the option grant date.


                                       10
<PAGE>   11
                  C. The following terms shall govern the grant and exercise of
limited stock appreciation rights:

                                (i) One or more Section 16 Insiders may be
         granted limited stock appreciation rights with respect to their
         outstanding options.

                                (ii) Upon the occurrence of a Hostile Take-Over,
         each such individual holding one or more options with such a limited
         stock appreciation right shall have the unconditional right
         (exercisable for a thirty (30)-day period following such Hostile
         Take-Over) to surrender each such option to the Corporation, to the
         extent the option is at the time exercisable for vested shares of
         Common Stock. In return for the surrendered option, the Optionee shall
         receive a cash distribution from the Corporation in an amount equal to
         the excess of (a) the Take-Over Price of the shares of Common Stock
         which are at the time vested under each surrendered option (or
         surrendered portion thereof) over (b) the aggregate exercise price
         payable for such shares. Such cash distribution shall be paid within
         five (5) days following the option surrender date.

                                (iii) The Plan Administrator shall pre-approve,
         at the time the limited right is granted, the subsequent exercise of
         that right in accordance with the terms of the grant and the provisions
         of this Section V. No additional approval of the Plan Administrator or
         the Board shall be required at the time of the actual option surrender
         and cash distribution.

                                (iv) The balance of the option (if any) shall
         continue in full force and effect in accordance with the documents
         evidencing such option.



                                       11
<PAGE>   12
                                  ARTICLE THREE

                             STOCK ISSUANCE PROGRAM


     I. STOCK ISSUANCE TERMS

                  Shares of Common Stock may be issued under the Stock Issuance
Program through direct and immediate issuances without any intervening option
grants. Each such stock issuance shall be evidenced by a Stock Issuance
Agreement which complies with the terms specified below.

                  A. Purchase Price.

                           1. The purchase price per share shall be fixed by the
Plan Administrator, but shall not be less than eighty-five percent (85%) of the
Fair Market Value per share of Common Stock on the issuance date.

                           2. Subject to the provisions of Section I of Article
Five, shares of Common Stock may be issued under the Stock Issuance Program for
any of the following items of consideration which the Plan Administrator may
deem appropriate in each individual instance:

                                (i) cash or check made payable to the
         Corporation, or

                                (ii) past services rendered to the Corporation
         (or any Parent or Subsidiary).

                  B. Vesting Provisions.

                           1. Shares of Common Stock issued under the Stock
Issuance Program may, in the discretion of the Plan Administrator, be fully and
immediately vested upon issuance or may vest in one or more installments over
the Participant's period of Service or upon attainment of specified performance
objectives. The elements of the vesting schedule applicable to any unvested
shares of Common Stock issued under the Stock Issuance Program, namely:

                                (i) the Service period to be completed by the
         Participant or the performance objectives to be attained,

                                (ii) the number of installments in which the
         shares are to vest,

                                (iii) the interval or intervals (if any) which
         are to lapse between installments, and

                                (iv) the effect which death, Permanent
         Disability or other event designated by the Plan Administrator is to
         have upon the vesting schedule,



                                       12
<PAGE>   13
shall be determined by the Plan Administrator and incorporated into the Stock
Issuance Agreement.

                           2. Any new, substituted or additional securities or
other property (including money paid other than as a regular cash dividend)
which the Participant may have the right to receive with respect to the
Participant's unvested shares of Common Stock by reason of any stock dividend,
stock split, recapitalization, combination of shares, exchange of shares or
other change affecting the outstanding Common Stock as a class without the
Corporation's receipt of consideration shall be issued subject to (i) the same
vesting requirements applicable to the Participant's unvested shares of Common
Stock and (ii) such escrow arrangements as the Plan Administrator shall deem
appropriate.

                           3. The Participant shall have full stockholder rights
with respect to any shares of Common Stock issued to the Participant under the
Stock Issuance Program, whether or not the Participant's interest in those
shares is vested. Accordingly, the Participant shall have the right to vote such
shares and to receive any regular cash dividends paid on such shares.

                           4. Should the Participant cease to remain in Service
while holding one or more unvested shares of Common Stock issued under the Stock
Issuance Program or should the performance objectives not be attained with
respect to one or more such unvested shares of Common Stock, then those shares
shall be immediately surrendered to the Corporation for cancellation, and the
Participant shall have no further stockholder rights with respect to those
shares. To the extent the surrendered shares were previously issued to the
Participant for consideration paid in cash or cash equivalent (including the
Participant's purchase-money indebtedness), the Corporation shall repay to the
Participant the cash consideration paid for the surrendered shares and shall
cancel the unpaid principal balance of any outstanding purchase-money note of
the Participant attributable to the surrendered shares.

                           5. The Plan Administrator may in its discretion waive
the surrender and cancellation of one or more unvested shares of Common Stock
(or other assets attributable thereto) which would otherwise occur upon the
cessation of the Participant's Service or the non-attainment of the performance
objectives applicable to those shares. Such waiver shall result in the immediate
vesting of the Participant's interest in the shares of Common Stock as to which
the waiver applies. Such waiver may be effected at any time, whether before or
after the Participant's cessation of Service or the attainment or non-attainment
of the applicable performance objectives.

     II. CORPORATE TRANSACTION/CHANGE IN CONTROL

                  A. All outstanding cancellation rights under the Stock
Issuance Program shall terminate automatically, and all the shares of Common
Stock subject to those terminated rights shall immediately vest in full, in the
event of any Corporate Transaction, except to the extent (i) those
repurchase/cancellation rights are assigned to the successor corporation (or
parent thereof) in connection with such Corporate Transaction or (ii) such
accelerated vesting is precluded by other limitations imposed in the Stock
Issuance Agreement.



                                       13
<PAGE>   14
                  B. Any cancellation rights that are assigned in the Corporate
Transaction shall automatically terminate, and the shares of Common Stock
subject to those terminated rights shall immediately vest in full, in the event
the Participant's Service should subsequently terminate by reason of an
Involuntary Termination within eighteen (18) months following the effective date
of such Corporate Transaction.

                  C. The Plan Administrator shall have the discretion to provide
for cancellation rights with terms different from those in effect under this
Section II in connection with a Corporate Transaction.

                  D. The Plan Administrator shall have the discretion,
exercisable either at the time the unvested shares are issued or at any time
while the Corporation's cancellation right remains outstanding, to (i) provide
for the automatic termination of one or more outstanding cancellation rights and
the immediate vesting of the shares of Common Stock subject to those rights upon
the occurrence of a Change in Control or (ii) condition any such accelerated
vesting upon the subsequent Involuntary Termination of the Participant's Service
within a specified period following the effective date of such Change in
Control.

     III. SHARE ESCROW/LEGENDS

                  Unvested shares may, in the Plan Administrator's discretion,
be held in escrow by the Corporation until the Participant's interest in such
shares vests or may be issued directly to the Participant with restrictive
legends on the certificates evidencing those unvested shares.



                                       14
<PAGE>   15
                                  ARTICLE FOUR

                         AUTOMATIC OPTION GRANT PROGRAM


     I. OPTION TERMS

                  A. GRANT DATES. Option grants shall be made on the dates
specified below:

                           1. Each individual who is first elected or appointed
as a non-employee Board member after the 1998 Annual Stockholders Meeting shall
automatically be granted, on the date of such initial election or appointment
(as the case may be), a Non-Statutory Option to purchase 10,000 shares of Common
Stock.

                           2. On the date of each Annual Stockholders Meeting,
beginning with the 1999 Annual Meeting, each individual who is re-elected to
serve as a non-employee Board member at such meeting shall automatically be
granted a Non-Statutory Option to purchase an additional 7,000 shares of Common
Stock, provided such individual has served as a non-employee Board member for at
least six (6) months. There shall be no limit on the number of such 7,000-share
option grants any one Eligible Director may receive over his or her period of
Board service.

                           Stockholder approval of this 1998 Restatement at the
1998 Annual Stockholders Meeting will constitute pre-approval of each option
subsequently granted on or after the date of such Annual Meeting pursuant to the
express terms of this Automatic Option Grant Program and the subsequent exercise
of that option in accordance with its terms.

                  B. EXERCISE PRICE.

                           1. The exercise price per share shall be equal to one
hundred percent (100%) of the Fair Market Value per share of Common Stock on the
option grant date.

                           2. The exercise price shall be payable in one or more
of the alternative forms authorized under the Discretionary Option Grant
Program. Except to the extent the sale and remittance procedure specified
thereunder is utilized, payment of the exercise price for the purchased shares
must be made on the Exercise Date.

                  C. OPTION TERM. Each option shall have a term of ten (10)
years measured from the option grant date.

                  D. EXERCISE AND VESTING OF OPTIONS. Each option shall be
immediately exercisable for any or all of the option shares. However, any shares
purchased under the option shall be subject to repurchase by the Corporation, at
the exercise price paid per share, upon the Optionee's cessation of Board
service prior to vesting in those shares. Each initial grant shall vest, and the
Corporation's repurchase right shall lapse, in a series of twenty-four (24)
successive equal monthly installments upon the Optionee's completion of each
month of Board service over the twenty-four (24)-month period measured from the
option grant date. Each annual grant shall vest, and the Corporation's
repurchase right shall lapse, in a series of twelve (12) successive



                                       15
<PAGE>   16
equal monthly installments upon the Optionee's completion of each month of Board
service over the twenty-four (24)-month period measured from the option grant
date.

                  E. EFFECT OF TERMINATION OF BOARD SERVICE. The following
provisions shall govern the exercise of any options held by the Optionee at the
time the Optionee ceases to serve as a Board member:

                           (i) The Optionee (or, in the event of Optionee's
         death, the personal representative of the Optionee's estate or the
         person or persons to whom the option is transferred pursuant to the
         Optionee's will or in accordance with the laws of descent and
         distribution) shall have a twelve (12)-month period following the date
         of such cessation of Board service in which to exercise each such
         option.
                           (ii) During the twelve (12)-month exercise period,
         the option may not be exercised in the aggregate for more than the
         number of vested shares of Common Stock for which the option is
         exercisable at the time of the Optionee's cessation of Board service.

                           (iii) Should the Optionee cease to serve as a Board
         member by reason of death or Permanent Disability, then all shares at
         the time subject to the option shall immediately vest so that such
         option may, during the twelve (12)-month exercise period following such
         cessation of Board service, be exercised for all or any portion of
         those shares as fully-vested shares of Common Stock.

                           (iv) In no event shall the option remain exercisable
         after the expiration of the option term. Upon the expiration of the
         twelve (12)-month exercise period or (if earlier) upon the expiration
         of the option term, the option shall terminate and cease to be
         outstanding for any vested shares for which the option has not been
         exercised. However, the option shall, immediately upon the Optionee's
         cessation of Board service for any reason other than death or Permanent
         Disability, terminate and cease to be outstanding to the extent the
         option is not otherwise at that time exercisable for vested shares.

     II. CORPORATE TRANSACTION/CHANGE IN CONTROL/HOSTILE TAKE-OVER

                  A. In the event of any Corporate Transaction, the shares of
Common Stock at the time subject to each outstanding option but not otherwise
vested shall automatically vest in full so that each such option shall,
immediately prior to the effective date of the Corporate Transaction, become
fully exercisable for all of the shares of Common Stock at the time subject to
such option and may be exercised for all or any portion of those shares as
fully-vested shares of Common Stock. Immediately following the consummation of
the Corporate Transaction, each automatic option grant shall terminate and cease
to be outstanding, except to the extent assumed by the successor corporation (or
parent thereof).

                  B. In connection with any Change in Control, the shares of
Common Stock at the time subject to each outstanding option but not otherwise
vested shall automatically vest in full so that each such option shall,
immediately prior to the effective date of the Change in



                                       16
<PAGE>   17
Control, become fully exercisable for all of the shares of Common Stock at the
time subject to such option and may be exercised for all or any portion of those
shares as fully-vested shares of Common Stock. Each such option shall remain
exercisable for such fully-vested option shares until the expiration or sooner
termination of the option term or the surrender of the option in connection with
a Hostile Take-Over.

                  C. Upon the occurrence of a Hostile Take-Over, the Optionee
shall have a thirty (30)-day period in which to surrender to the Corporation
each automatic option held by him or her at that time. The Optionee shall in
return be entitled to a cash distribution from the Corporation in an amount
equal to the excess of (i) the Take-Over Price of the shares of Common Stock at
the time subject to the surrendered option (whether or not the Optionee is
otherwise at the time vested in those shares) over (ii) the aggregate exercise
price payable for such shares. Such cash distribution shall be paid within five
(5) days following the surrender of the option to the Corporation. Stockholder
approval of this 1998 Restatement at the 1998 Annual Meeting shall constitute
pre-approval of each option granted with such a surrender right under this
Automatic Option Grant Program on or after the date of that Annual Meeting and
the subsequent exercise of such right in accordance with the terms and
provisions of this Section II.C. No additional approval or consent of the Plan
Administrator or the Board shall be required at the time of the actual option
surrender and cash distribution.

                  D. Each option which is assumed in connection with a Corporate
Transaction shall be appropriately adjusted, immediately after such Corporate
Transaction, to apply to the number and class of securities which would have
been issuable to the Optionee in consummation of such Corporate Transaction had
the option been exercised immediately prior to such Corporate Transaction.
Appropriate adjustments shall also be made to the exercise price payable per
share under each outstanding option, provided the aggregate exercise price
payable for such securities shall remain the same.

                  E. The grant of options under the Automatic Option Grant
Program shall in no way affect the right of the Corporation to adjust,
reclassify, reorganize or otherwise change its capital or business structure or
to merge, consolidate, dissolve, liquidate or sell or transfer all or any part
of its business or assets.

     III. REMAINING TERMS

                  The remaining terms of each option granted under the Automatic
Option Grant Program shall be the same as the terms in effect for option grants
made under the Discretionary Option Grant Program.



                                       17
<PAGE>   18
                                  ARTICLE FIVE

                                  MISCELLANEOUS


     I. FINANCING

                  A. The Plan Administrator may permit any Optionee or
Participant to pay the option exercise price under the Discretionary Option
Grant Program or the purchase price for shares issued under the Stock Issuance
Program by delivering a promissory note payable in one or more installments. The
terms of any such promissory note (including the interest rate and the terms of
repayment) shall be established by the Plan Administrator in its sole
discretion. Promissory notes may be authorized with or without security or
collateral. In all events, the maximum credit available to the Optionee or
Participant may not exceed the sum of (i) the aggregate option exercise price or
purchase price payable for the purchased shares plus (ii) any Federal, state and
local income and employment tax liability incurred by the Optionee or the
Participant in connection with the option exercise or share purchase.

                  B. The Plan Administrator may, in its discretion, determine
that one or more such promissory notes shall be subject to forgiveness by the
Corporation in whole or in part upon such terms as the Plan Administrator may
deem appropriate.

     II. TAX WITHHOLDING

                  A. The Corporation's obligation to deliver shares of Common
Stock upon the exercise of options or stock appreciation rights or upon the
issuance or vesting of such shares under the Plan shall be subject to the
satisfaction of all applicable Federal, state and local income and employment
tax withholding requirements.

                  B. The Plan Administrator may, in its discretion, provide any
or all holders of Non-Statutory Options or unvested shares of Common Stock under
the Plan (other than the options granted or the shares issued under the
Automatic Option Grant Program) with the right to use shares of Common Stock in
satisfaction of all or part of the Taxes incurred by such holders in connection
with the exercise of their options or the vesting of their shares. Such right
may be provided to any such holder in either or both of the following formats:

                                (i) Stock Withholding: The election to have the
         Corporation withhold, from the shares of Common Stock otherwise
         issuable upon the exercise of such Non-Statutory Option or the vesting
         of such shares, a portion of those shares with an aggregate Fair Market
         Value equal to the percentage of the Taxes (not to exceed one hundred
         percent (100%)) designated by the holder.



                                       18
<PAGE>   19
                                (ii) Stock Delivery: The election to deliver to
         the Corporation, at the time the Non-Statutory Option is exercised or
         the shares vest, one or more shares of Common Stock previously acquired
         by such holder (other than in connection with the option exercise or
         share vesting triggering the Taxes) with an aggregate Fair Market Value
         equal to the percentage of the Taxes (not to exceed one hundred percent
         (100%)) designated by the holder.

     III. EFFECTIVE DATE AND TERM OF THE PLAN

                  A. The Discretionary Option Grant and Stock Issuance Programs
became effective on the Plan Effective Date. The Automatic Option Grant Program
became effective on the Automatic Option Grant Program Effective Date. The Plan
serves as the successor to the Predecessor Plans, and no further option grants
or direct stock issuances shall be made under the Predecessor Plans after the
Section 12(g) Registration Date. All options outstanding under the Predecessor
Plans as of such date were incorporated into the Plan at that time and shall be
treated as outstanding options under the Plan. However, each outstanding option
so incorporated shall continue to be governed solely by the terms of the
documents evidencing such option, and no provision of the Plan shall be deemed
to affect or otherwise modify the rights or obligations of the holders of such
incorporated options with respect to their acquisition of shares of Common
Stock.

                  B. The Plan was amended and restated by the Board, effective
April 23, 1998 (the "April 1998 Restatement") to effect the following revisions:
(i) increase the maximum number of shares of Common Stock authorized for
issuance over the term of the Plan by 200,000 shares, from 1,133,304 shares to
1,333,304 shares, (ii) implement an automatic share increase feature pursuant to
which the number of shares available for issuance over the term of the Plan
shall automatically increase on the first trading day of each calendar year,
beginning with the 1999 calendar year, by an amount equal to three percent (3%)
of the total number of shares of Common Stock outstanding on the last trading
day of the immediately preceding calendar year, (iii) increase the number of
shares subject to the automatic option grants to the non-employee Board members
under the Automatic Option Grant Program from 8,000 shares to 10,000 shares for
the initial automatic grants and from 2,000 shares to 7,000 shares for the
annual automatic grants, (iv) render the non-employee Board members serving on
the Primary Committee eligible to receive option grants under the Discretionary
Option Grant Program and direct stock issuances under the Stock Issuance
Program, (v) allow unvested shares issued under the Plan and subsequently
repurchased by the Corporation at the option exercise or direct issue price paid
per share to be reissued under the Plan, (vi) remove certain restrictions on the
eligibility of non-employee Board members to serve as Plan Administrator and
(vii) effect a series of additional changes to the provisions of the Plan
(including the stockholder approval requirements) in order to take advantage of
the recent amendments to Rule 16b-3 of the Securities and Exchange Commission
which exempts certain officer and director transactions under the Plan from the
short-swing liability provisions of the federal securities laws.



                                       19
<PAGE>   20

                  The April 1998 Restatement is subject to stockholder approval
at the 1998 Annual Meeting. Should such stockholder approval not be obtained,
then any options granted on the basis of the 200,000-share increase which forms
part of this Proposal shall terminate without becoming exercisable for any of
the shares of Common Stock subject to those options, and no further options
shall be granted on the basis of such share increase. In addition, (i) the
automatic annual share increase feature shall not be implemented, (ii) the
initial and the annual automatic option grants to the non-employee Board members
shall not be increased to 10,000 shares and 7,000 shares, respectively, and
those grants shall continue to vest in accordance with the vesting schedules
currently in effect for them under the Automatic Option Grant Program, (iii)
unvested shares issued under the Plan and subsequently repurchased by the
Corporation at the purchase price paid per share shall continue to reduce, on a
share-for-share basis, the number of shares available for issuance under the
Plan, and (iv) the non-employee Board members who are serving as on the Primary
Committee shall not become eligible to participate in the Discretionary Option
Grant and Stock Issuance Programs. The Plan shall, however, continue to remain
in effect, and option grants and direct stock issuances may continue to be made
pursuant to the provisions of the Plan in effect prior to the amendment
summarized in this Proposal, until the available reserve of Common Stock as last
approved by the stockholders has been issued pursuant to option grants made
under the Plan. All option grants made under the Plan prior to the April 1998
Restatement shall remain outstanding in accordance with the terms and conditions
of the respective instruments evidencing those options, and nothing in the April
1998 Restatement shall be deemed to modify or in any way affect those
outstanding options.

                  C. One or more provisions of the Plan, including (without
limitation) the option/vesting acceleration provisions of Article Two relating
to Corporate Transactions and Changes in Control, may, in the Plan
Administrator's discretion, be extended to one or more options incorporated from
the Predecessor Plans which do not otherwise contain such provisions.

                  D. The Plan shall terminate upon the earliest of (i) February
27, 2006, (ii) the date on which all shares available for issuance under the
Plan shall have been issued pursuant to the exercise of the options or the
issuance of shares (whether vested or unvested) under the Plan or (iii) the
termination of all outstanding options in connection with a Corporate
Transaction. Upon such Plan termination, all outstanding options and unvested
stock issuances shall continue to have force and effect in accordance with the
provisions of the documents evidencing such options or issuances.

     IV. AMENDMENT OF THE PLAN

                  A. The Board shall have complete and exclusive power and
authority to amend or modify the Plan in any or all respects. However, no such
amendment or modification shall adversely affect any rights and obligations with
respect to options, stock appreciation rights or unvested stock issuances at the
time outstanding under the Plan unless the Optionee or the Participant consents
to such amendment or modification. In addition, certain amendments may require
stockholder approval pursuant to applicable laws or regulations.

                  B. Options to purchase shares of Common Stock may be granted
under the Discretionary Option Grant Program and shares of Common Stock may be
issued under the Stock Issuance Program that are in each instance in excess of
the number of shares then available 



                                       20
<PAGE>   21

for issuance under the Plan, provided any excess shares actually issued under
those programs are held in escrow until there is obtained stockholder approval
of an amendment sufficiently increasing the number of shares of Common Stock
available for issuance under the Plan. If such stockholder approval is not
obtained within twelve (12) months after the date the first such excess grants
or issuances are made, then (i) any unexercised options granted on the basis of
such excess shares shall terminate and cease to be outstanding and (ii) the
Corporation shall promptly refund to the Optionees and the Participants the
exercise or purchase price paid for any excess shares issued under the Plan and
held in escrow, together with interest (at the applicable Short Term Federal
Rate) for the period the shares were held in escrow, and such shares shall
thereupon be automatically cancelled and cease to be outstanding.

     V. USE OF PROCEEDS

                  Any cash proceeds received by the Corporation from the sale of
shares of Common Stock under the Plan shall be used for general corporate
purposes.

     VI. REGULATORY APPROVALS

                  A. The implementation of the Plan, the granting of any option
or stock appreciation right under the Plan and the issuance of any shares of
Common Stock (i) upon the exercise of any option or stock appreciation right or
(ii) under the Stock Issuance Program shall be subject to the Corporation's
procurement of all approvals and permits required by regulatory authorities
having jurisdiction over the Plan, the options and stock appreciation rights
granted under it and the shares of Common Stock issued pursuant to it.

                  B. No shares of Common Stock or other assets shall be issued
or delivered under the Plan unless and until there shall have been compliance
with all applicable requirements of Federal and state securities laws, including
the filing and effectiveness of the Form S-8 registration statement for the
shares of Common Stock issuable under the Plan, and all applicable listing
requirements of any stock exchange (or the Nasdaq National Market, if
applicable) on which Common Stock is then listed for trading.

     VII. NO EMPLOYMENT/SERVICE RIGHTS

                  Nothing in the Plan shall confer upon the Optionee or the
Participant any right to continue in Service for any period of specific duration
or interfere with or otherwise restrict in any way the rights of the Corporation
(or any Parent or Subsidiary employing or retaining such person) or of the
Optionee or the Participant, which rights are hereby expressly reserved by each,
to terminate such person's Service at any time for any reason, with or without
cause.



                                       21
<PAGE>   22
                                    APPENDIX


                  The following definitions shall be in effect under the Plan:

                  A. AUTOMATIC OPTION GRANT PROGRAM shall mean the automatic
option grant program in effect under the Plan.

                  B. AUTOMATIC OPTION GRANT PROGRAM EFFECTIVE DATE shall mean
the date on which the Underwriting Agreement is executed and the initial public
offering price of the Common Stock is established.

                  C. BOARD shall mean the Corporation's Board of Directors.

                  D. CHANGE IN CONTROL shall mean a change in ownership or
control of the Corporation effected through either of the following
transactions:

                        (i) the acquisition, directly or indirectly, by any
         person or related group of persons (other than the Corporation or a
         person that directly or indirectly controls, is controlled by, or is
         under common control with, the Corporation), of beneficial ownership
         (within the meaning of Rule 13d-3 of the 1934 Act) of securities
         possessing more than fifty percent (50%) of the total combined voting
         power of the Corporation's outstanding securities pursuant to a tender
         or exchange offer made directly to the Corporation's stockholders which
         the Board does not recommend such stockholders to accept, or

                       (ii) a change in the composition of the Board over a
         period of thirty-six (36) consecutive months or less such that a
         majority of the Board members ceases, by reason of one or more
         contested elections for Board membership, to be comprised of
         individuals who either (A) have been Board members continuously since
         the beginning of such period or (B) have been elected or nominated for
         election as Board members during such period by at least a majority of
         the Board members described in clause (A) who were still in office at
         the time the Board approved such election or nomination.

                  E. CODE shall mean the Internal Revenue Code of 1986, as
amended.

                  F. COMMON STOCK shall mean the Corporation's common stock.

                  G. CORPORATE TRANSACTION shall mean either of the following
stockholder-approved transactions to which the Corporation is a party:

                        (i) a merger or consolidation in which securities
         possessing more than fifty percent (50%) of the total combined voting
         power of the Corporation's outstanding securities are transferred to a
         person or persons different from the persons holding those securities
         immediately prior to such transaction; or



                                      A-1
<PAGE>   23
                       (ii) the sale, transfer or other disposition of all or
         substantially all of the Corporation's assets in complete liquidation
         or dissolution of the Corporation.

                  H. CORPORATION shall mean Onyx Acceptance Corporation, a
Delaware corporation, and any corporate successor to all or substantially all of
the assets or voting stock of Onyx Acceptance Corporation which shall by
appropriate action adopt the Plan.

                  I. DISCRETIONARY OPTION GRANT PROGRAM shall mean the
discretionary option grant program in effect under the Plan.

                  J. DOMESTIC RELATIONS ORDER shall mean any judgment, decree or
order (including approval of a property settlement agreement) which provides or
otherwise conveys, pursuant to applicable State domestic relations laws
(including community property laws), marital property rights to any spouse or
former spouse of the Optionee.

                  K. ELIGIBLE DIRECTOR shall mean a non-employee Board member
eligible to participate in the Automatic Option Grant Program in accordance with
the eligibility provisions of Article One.

                  L. EMPLOYEE shall mean an individual who is in the employ of
the Corporation (or any Parent or Subsidiary), subject to the control and
direction of the employer entity as to both the work to be performed and the
manner and method of performance.

                  M. EXERCISE DATE shall mean the date on which the Corporation
shall have received written notice of the option exercise.

                  N. FAIR MARKET VALUE per share of Common Stock on any relevant
date shall be determined in accordance with the following provisions:

                        (i) If the Common Stock is at the time traded on the
         Nasdaq National Market, then the Fair Market Value shall be the closing
         selling price per share of Common Stock on the date in question, as
         such price is reported by the National Association of Securities
         Dealers on the Nasdaq National Market or any successor system. If there
         is no closing selling price for the Common Stock on the date in
         question, then the Fair Market Value shall be the closing selling price
         on the last preceding date for which such quotation exists.

                       (ii) If the Common Stock is at the time listed on any
         Stock Exchange, then the Fair Market Value shall be the closing selling
         price per share of Common Stock on the date in question on the Stock
         Exchange determined by the Plan Administrator to be the primary market
         for the Common Stock, as such price is officially quoted in the
         composite tape of transactions on such exchange. If there is no closing
         selling price for the Common Stock on the date in question, then the
         Fair Market Value shall be the closing selling price on the last
         preceding date for which such quotation exists.



                                      A-2
<PAGE>   24
                  O. HOSTILE TAKE-OVER shall mean a change in ownership of the
Corporation effected through the acquisition, directly or indirectly, by any
person or related group of persons (other than the Corporation or a person that
directly or indirectly controls, is controlled by, or is under common control
with, the Corporation) of beneficial ownership (within the meaning of Rule 13d-3
of the 1934 Act) of securities possessing more than fifty percent (50%) of the
total combined voting power of the Corporation's outstanding securities pursuant
to a tender or exchange offer made directly to the Corporation's stockholders
which the Board does not recommend such stockholders to accept.

                  P. INCENTIVE OPTION shall mean an option which satisfies the
requirements of Code Section 422.

                  Q. INVOLUNTARY TERMINATION shall mean the termination of the
Service of any individual which occurs by reason of:

                        (i) such individual's involuntary dismissal or discharge
         by the Corporation for reasons other than Misconduct, or

                       (ii) such individual's voluntary resignation following
         (A) a change in his or her position with the Corporation which
         materially reduces his or her level of responsibility, (B) a reduction
         in his or her level of compensation (including base salary, fringe
         benefits and participation in corporate-performance based bonus or
         incentive programs) by more than fifteen percent (15%) or (C) a
         relocation of such individual's place of employment by more than fifty
         (50) miles, provided and only if such change, reduction or relocation
         is effected by the Corporation without the individual's consent.

                  R. MISCONDUCT shall mean the commission of any act of fraud,
embezzlement or dishonesty by the Optionee or Participant, any unauthorized use
or disclosure by such person of confidential information or trade secrets of the
Corporation (or any Parent or Subsidiary), or any other intentional misconduct
by such person adversely affecting the business or affairs of the Corporation
(or any Parent or Subsidiary) in a material manner. The foregoing definition
shall not be deemed to be inclusive of all the acts or omissions which the
Corporation (or any Parent or Subsidiary) may consider as grounds for the
dismissal or discharge of any Optionee, Participant or other person in the
Service of the Corporation (or any Parent or Subsidiary).

                  S. 1934 ACT shall mean the Securities Exchange Act of 1934, 
as amended.

                  T. NON-STATUTORY OPTION shall mean an option not intended to
satisfy the requirements of Code Section 422.

                  U. OPTIONEE shall mean any person to whom an option is granted
under the Discretionary Option Grant or Automatic Option Grant Program.



                                      A-3
<PAGE>   25
                  V. PARENT shall mean any corporation (other than the
Corporation) in an unbroken chain of corporations ending with the Corporation,
provided each corporation in the unbroken chain (other than the Corporation)
owns, at the time of the determination, stock possessing fifty percent (50%) or
more of the total combined voting power of all classes of stock in one of the
other corporations in such chain.

                  W. PARTICIPANT shall mean any person who is issued shares of
Common Stock under the Stock Issuance Program.

                  X. PERMANENT DISABILITY OR PERMANENTLY DISABLED shall mean the
inability of the Optionee or the Participant to engage in any substantial
gainful activity by reason of any medically determinable physical or mental
impairment expected to result in death or to be of continuous duration of twelve
(12) months or more. However, solely for the purposes of the Automatic Option
Grant Program, Permanent Disability or Permanently Disabled shall mean the
inability of the non-employee Board member to perform his or her usual duties as
a Board member by reason of any medically determinable physical or mental
impairment expected to result in death or to be of continuous duration of twelve
(12) months or more.

                  Y. PLAN shall mean the Corporation's 1996 Stock Option/Stock
Issuance Plan, as set forth in this document.

                  Z. PLAN ADMINISTRATOR shall mean the particular entity,
whether the Primary Committee, the Board or the Secondary Committee, which is
authorized to administer the Discretionary Option Grant and Stock Issuance
Programs with respect to one or more classes of eligible persons, to the extent
such entity is carrying out its administrative functions under those programs
with respect to the persons under its jurisdiction.

                  AA. PLAN EFFECTIVE DATE shall mean February 28, 1996, the date
on which the Plan was adopted by the Board.

                  BB. PREDECESSOR PLANS shall mean the Corporation's 1994 Stock
Option Plan and the 1994 Special Performance Option Grant Plan.

                  CC. PRIMARY COMMITTEE shall mean the committee of two (2) or
more non-employee Board members appointed by the Board to administer the
Discretionary Option Grant and Stock Issuance Programs with respect to Section
16 Insiders.

                  DD. QUALIFIED DOMESTIC RELATIONS ORDER shall mean a Domestic
Relations Order which substantially complies with the requirements of Code
Section 414(p). The Plan Administrator shall have the sole discretion to
determine whether a Domestic Relations Order is a Qualified Domestic Relations
Order.

                  EE. SECONDARY COMMITTEE shall mean a committee of two (2) or
more Board members appointed by the Board to administer the Discretionary Option
Grant and Stock Issuance Programs with respect to eligible persons other than
Section 16 Insiders.

                  FF. SECTION 16 INSIDER shall mean an officer or director of
the Corporation subject to the short-swing profit liabilities of Section 16 of
the 1934 Act.



                                      A-4
<PAGE>   26
                  GG. SECTION 12(G) REGISTRATION DATE shall mean the first date
on which the Common Stock is registered under Section 12(g) of the 1934 Act.

                  HH. SERVICE shall mean the provision of services to the
Corporation (or any Parent or Subsidiary) by a person in the capacity of an
Employee, a non-employee member of the board of directors or a consultant or
independent advisor, except to the extent otherwise specifically provided in the
documents evidencing the option grant or stock issuance.

                  II. STOCK EXCHANGE shall mean either the American Stock
Exchange or the New York Stock Exchange.

                  JJ. STOCK ISSUANCE AGREEMENT shall mean the agreement entered
into by the Corporation and the Participant at the time of issuance of shares of
Common Stock under the Stock Issuance Program.

                  KK. STOCK ISSUANCE PROGRAM shall mean the stock issuance
program in effect under the Plan.

                  LL. SUBSIDIARY shall mean any corporation (other than the
Corporation) in an unbroken chain of corporations beginning with the
Corporation, provided each corporation (other than the last corporation) in the
unbroken chain owns, at the time of the determination, stock possessing fifty
percent (50%) or more of the total combined voting power of all classes of stock
in one of the other corporations in such chain.

                  MM. TAKE-OVER PRICE shall mean the greater of (i) the Fair
Market Value per share of Common Stock on the date the option is surrendered to
the Corporation in connection with a Hostile Take-Over or (ii) the highest
reported price per share of Common Stock paid by the tender offeror in effecting
such Hostile Take-Over. However, if the surrendered option is an Incentive
Option, the Take-Over Price shall not exceed the clause (i) price per share.

                  NN. TAXES shall mean the Federal, state and local income and
employment tax liabilities incurred by the holder of Non-Statutory Options or
unvested shares of Common Stock in connection with the exercise of those options
or the vesting of those shares.

                  OO. 10% STOCKHOLDER shall mean the owner of stock (as
determined under Code Section 424(d)) possessing more than ten percent (10%) of
the total combined voting power of all classes of stock of the Corporation (or
any Parent or Subsidiary).



                                      A-5

<PAGE>   1
                                                                    EXHIBIT 99.2



                           ONYX ACCEPTANCE CORPORATION
                             STOCK OPTION AGREEMENT



RECITALS

        A. The Board has adopted the Plan for the purpose of retaining the
services of selected Employees and consultants and other independent advisors
who provide services to the Corporation (or any Parent or Subsidiary).

        B. Optionee is to render valuable services to the Corporation (or a
Parent or Subsidiary), and this Agreement is executed pursuant to, and is
intended to carry out the purposes of, the Plan in connection with the
Corporation's grant of an option to Optionee.

        C. All capitalized terms in this Agreement shall have the meaning
assigned to them in the attached Appendix.

               NOW, THEREFORE, it is hereby agreed as follows:

               1. GRANT OF OPTION. The Corporation hereby grants to Optionee, as
of the Grant Date, an option to purchase up to the number of Option Shares
specified in the Grant Notice. The Option Shares shall be purchasable from time
to time during the option term specified in Paragraph 2 at the Exercise Price.

               2. OPTION TERM. This option shall have a term of ten (10) years
measured from the Grant Date and shall accordingly expire at the close of
business on the Expiration Date, unless sooner terminated in accordance with
Paragraph 5 or 6.

               3. LIMITED TRANSFERABILITY. During Optionee's lifetime, this
option may be assigned in whole or in part in accordance with the terms of a
Qualified Domestic Relations Order. The assigned portion shall be exercisable
only by the person or persons who acquire a proprietary interest in the option
pursuant to such Qualified Domestic Relations Order. The terms applicable to the
assigned portion shall be the same as those in effect for this option
immediately prior to such assignment and shall be set forth in such documents
issued to the assignee as the Plan Administrator may deem appropriate.

               4. DATES OF EXERCISE. This option shall become exercisable for
the Option Shares in one or more installments as specified in the Grant Notice.
As the option becomes exercisable for such installments, those installments
shall accumulate and the option shall remain exercisable for the accumulated
installments until the Expiration Date or sooner termination of the option term
under Paragraph 5 or 6.

<PAGE>   2
               5. CESSATION OF SERVICE. The option term specified in Paragraph 2
shall terminate (and this option shall cease to be outstanding) prior to the
Expiration Date should any of the following provisions become applicable:

                           (i) Should Optionee cease to remain in Service for
        any reason (other than death, Permanent Disability or Misconduct) while
        this option is outstanding, then Optionee shall have a period of three
        (3) months (commencing with the date of such cessation of Service)
        during which to exercise this option, but in no event shall this option
        be exercisable at any time after the Expiration Date.

                          (ii) Should Optionee die while this option is
        outstanding, then the personal representative of Optionee's estate or
        the person or persons to whom the option is transferred pursuant to
        Optionee's will or in accordance with the laws of descent and
        distribution shall have the right to exercise this option. Such right
        shall lapse and this option shall cease to be outstanding upon the
        earlier of (A) the expiration of the twelve (12)- month period measured
        from the date of Optionee's death or (B) the Expiration Date.

                         (iii) Should Optionee cease Service by reason of
        Permanent Disability while this option is outstanding, then Optionee
        shall have a period of twelve (12) months (commencing with the date of
        such cessation of Service) during which to exercise this option. In no
        event shall this option be exercisable at any time after the Expiration
        Date.

                          (iv) During the limited period of post-Service
        exercisability, this option may not be exercised in the aggregate for
        more than the number of vested Option Shares for which the option is
        exercisable at the time of Optionee's cessation of Service. Upon the
        expiration of such limited exercise period or (if earlier) upon the
        Expiration Date, this option shall terminate and cease to be outstanding
        for any vested Option Shares for which the option has not been
        exercised. To the extent Optionee is not vested in the Option Shares at
        the time of Optionee's cessation of Service, this option shall
        immediately terminate and cease to be outstanding with respect to those
        shares.

                           (v) Should Optionee's Service be terminated for
        Misconduct, then this option shall terminate immediately and cease to
        remain outstanding.

                          (vi) In the event of a Corporate Transaction, the
        provisions of Paragraph 6 shall govern the period for which this option
        is to remain exercisable following Optionee's cessation of Service and
        shall supersede any provisions to the contrary in this paragraph.



                                       2.
<PAGE>   3
               6. SPECIAL ACCELERATION OF OPTION.

                      (a) In the event of a Corporate Transaction, the
exercisability of this option, to the extent outstanding at such time but not
otherwise fully exercisable, shall automatically accelerate so that this option
shall, immediately prior to the effective date of the Corporate Transaction,
become exercisable for any or all of the Option Shares at the time subject to
this option as fully-vested shares of Common Stock. No such acceleration of this
option, however, shall occur if and to the extent: (i) this option is, in
connection with the Corporate Transaction, either to be assumed by the successor
corporation (or parent thereof) or to be replaced with a comparable option to
purchase shares of the capital stock of the successor corporation (or parent
thereof) or (ii) this option is to be replaced with a cash incentive program of
the successor corporation which preserves the spread existing on the Option
Shares for which this option is not exercisable at the time of the Corporate
Transaction (the excess of the Fair Market Value of such Option Shares over the
aggregate Exercise Price payable for such shares) and provides for subsequent
pay-out in accordance with the same exercise schedule in effect for the option
pursuant to the option exercise schedule set forth in the Grant Notice. The
determination of option comparability under clause (i) shall be made by the Plan
Administrator, and such determination shall be final, binding and conclusive.

                      (b) Immediately following the Corporate Transaction, this
option, to the extent not previously exercised, shall terminate and cease to be
outstanding, except to the extent assumed by the successor corporation (or
parent thereof) in connection with the Corporate Transaction.

                      (c) If this option is assumed in connection with a
Corporate Transaction, then this option shall be appropriately adjusted,
immediately after such Corporate Transaction, to apply to the number and class
of securities which would have been issuable to Optionee in consummation of such
Corporate Transaction had the option been exercised immediately prior to such
Corporate Transaction, and appropriate adjustments shall also be made to the
Exercise Price, provided the aggregate Exercise Price shall remain the same.

                      (d) Upon an Involuntary Termination of Optionee's Service
within eighteen (18) months following a Corporate Transaction in which this
option is assumed or replaced, the exercisability of this option, to the extent
outstanding at such time but not otherwise fully exercisable, shall
automatically accelerate so that this option shall immediately become fully
exercisable for all the Option Shares at the time subject to this option as
fully-vested shares of Common Stock and may be exercised for any or all of those
shares at any time prior to the earlier of (i) the Expiration Date or (ii) the
expiration of the one (1)-year period measured from the effective date of the
Involuntary Termination.

                      (e) This Agreement shall not in any way affect the right
of the Corporation to adjust, reclassify, reorganize or otherwise change its
capital or business structure or to merge, consolidate, dissolve, liquidate or
sell or transfer all or any part of its business or assets.



                                       3.
<PAGE>   4
               7. ADJUSTMENT IN OPTION SHARES. Should any change be made to the
Common Stock by reason of any stock split, stock dividend, recapitalization,
combination of shares, exchange of shares or other change affecting the
outstanding Common Stock as a class without the Corporation's receipt of
consideration, appropriate adjustments shall be made to (i) the total number
and/or class of securities subject to this option and (ii) the Exercise Price in
order to reflect such change and thereby preclude a dilution or enlargement of
benefits hereunder.

               8. STOCKHOLDER RIGHTS. The holder of this option shall not have
any stockholder rights with respect to the Option Shares until such person shall
have exercised the option, paid the Exercise Price and become a holder of record
of the purchased shares.

               9. MANNER OF EXERCISING OPTION.

                      (a) In order to exercise this option with respect to all
or any part of the Option Shares for which this option is at the time
exercisable, Optionee (or any other person or persons exercising the option)
must take the following actions:

                                  (i) Execute and deliver to the Corporation a
         Notice of Exercise for the Option Shares for which the option is
         exercised.

                                  (ii) Pay the aggregate Exercise Price for the
         purchased shares in one or more of the following forms:

                                    (A) cash or check made payable to the
               Corporation;

                                    (B) a promissory note payable to the
               Corporation, but only to the extent authorized by the Plan
               Administrator in accordance with Paragraph 13;

                                    (C) shares of Common Stock held by Optionee
               (or any other person or persons exercising the option) for the
               requisite period necessary to avoid a charge to the Corporation's
               earnings for financial reporting purposes and valued at Fair
               Market Value on the Exercise Date; or

                                    (D) through a special sale and remittance
               procedure pursuant to which Optionee (or any other person or
               persons exercising the option) shall concurrently provide
               irrevocable written instructions (I) to a Corporation-designated
               brokerage firm to effect the immediate sale of the purchased
               shares and remit to the Corporation, out of the sale proceeds
               available on the settlement date, sufficient funds to cover the
               aggregate Exercise Price payable for the purchased shares plus



                                             4.

<PAGE>   5
               all applicable Federal, state and local income and employment
               taxes required to be withheld by the Corporation by reason of
               such exercise and (II) to the Corporation to deliver the
               certificates for the purchased shares directly to such brokerage
               firm in order to complete the sale.

                      Except to the extent the sale and remittance procedure is
               utilized in connection with the option exercise, payment of the
               Exercise Price must accompany the Notice of Exercise delivered to
               the Corporation in connection with the option exercise.

                                (iii) Furnish to the Corporation appropriate
        documentation that the person or persons exercising the option (if other
        than Optionee) have the right to exercise this option.

                                (iv) Make appropriate arrangements with the
        Corporation (or Parent or Subsidiary employing or retaining Optionee)
        for the satisfaction of all Federal, state and local income and
        employment tax withholding requirements applicable to the option
        exercise.

                      (b) As soon as practical after the Exercise Date, the
Corporation shall issue to or on behalf of Optionee (or any other person or
persons exercising this option) a certificate for the purchased Option Shares,
with the appropriate legends affixed thereto.

                      (c) In no event may this option be exercised for any
fractional shares.

               10. COMPLIANCE WITH LAWS AND REGULATIONS.

                      (a) The exercise of this option and the issuance of the
Option Shares upon such exercise shall be subject to compliance by the
Corporation and Optionee with all applicable requirements of law relating
thereto and with all applicable regulations of any stock exchange (or the Nasdaq
National Market, if applicable) on which the Common Stock may be listed for
trading at the time of such exercise and issuance.

                      (b) The inability of the Corporation to obtain approval
from any regulatory body having authority deemed by the Corporation to be
necessary to the lawful issuance and sale of any Common Stock pursuant to this
option shall relieve the Corporation of any liability with respect to the
non-issuance or sale of the Common Stock as to which such approval shall not
have been obtained. The Corporation, however, shall use its best efforts to
obtain all such approvals.

               11. SUCCESSORS AND ASSIGNS. Except to the extent otherwise
provided in Paragraphs 3 and 6, the provisions of this Agreement shall inure to
the benefit of, and be binding upon, the Corporation and its successors and
assigns and Optionee, Optionee's assigns and the legal representatives, heirs
and legatees of Optionee's estate.



                                       5.
<PAGE>   6
               12. NOTICES. Any notice required to be given or delivered to the
Corporation under the terms of this Agreement shall be in writing and addressed
to the Corporation at its principal corporate offices. Any notice required to be
given or delivered to Optionee shall be in writing and addressed to Optionee at
the address indicated below Optionee's signature line on the Grant Notice. All
notices shall be deemed effective upon personal delivery or upon deposit in the
U.S. mail, postage prepaid and properly addressed to the party to be notified.

               13. FINANCING. The Plan Administrator may, in its absolute
discretion and without any obligation to do so, permit Optionee to pay the
Exercise Price for the purchased Option Shares by delivering a promissory note.
The terms of any such promissory note (including the interest rate, the
requirements for collateral and the terms of repayment) shall be established by
the Plan Administrator in its sole discretion.

               14. CONSTRUCTION. This Agreement and the option evidenced hereby
are made and granted pursuant to the Plan and are in all respects limited by and
subject to the terms of the Plan. All decisions of the Plan Administrator with
respect to any question or issue arising under the Plan or this Agreement shall
be conclusive and binding on all persons having an interest in this option.

               15. GOVERNING LAW. The interpretation, performance and
enforcement of this Agreement shall be governed by the laws of the State of
California without resort to that State's conflict-of-laws rules.

               16. EXCESS SHARES. If the Option Shares covered by this Agreement
exceed, as of the Grant Date, the number of shares of Common Stock which may
without stockholder approval be issued under the Plan, then this option shall be
void with respect to such excess shares, unless stockholder approval of an
amendment sufficiently increasing the number of shares of Common Stock issuable
under the Plan is obtained in accordance with the provisions of the Plan.



                                       6.
<PAGE>   7
                                    EXHIBIT I

                               NOTICE OF EXERCISE


               I hereby notify Onyx Acceptance Corporation (the "Corporation")
that I elect to purchase    shares of the Corporation's Common Stock (the
"Purchased Shares") at the option exercise price of $    per share (the
"Exercise Price") pursuant to that certain option (the "Option") granted to me
under the Corporation's 1998 Non-Officer Stock Option/Stock Issuance Plan on
        , 199 .

               Concurrently with the delivery of this Exercise Notice to the
Corporation, I shall hereby pay to the Corporation the Exercise Price for the
Purchased Shares in accordance with the provisions of my agreement with the
Corporation (or other documents) evidencing the Option and shall deliver
whatever additional documents may be required by such agreement as a condition
for exercise. Alternatively, I may utilize the special broker-dealer sale and
remittance procedure specified in my agreement to effect payment of the Exercise
Price.


_____________________________, 199_
Date


                                            ____________________________________
                                            Optionee

                                            Address:____________________________

                                            ____________________________________



Print name in exact manner
it is to appear on the
stock certificate:                          ____________________________________

Address to which certificate
is to be sent, if different
from address above:                         ____________________________________

                                            ____________________________________


Social Security Number:                     ____________________________________

Employee Number:                            ____________________________________
<PAGE>   8
                                    APPENDIX


               The following definitions shall be in effect under the Agreement:

        A. AGREEMENT shall mean this Stock Option Agreement.

        B. BOARD shall mean the Corporation's Board of Directors.

        C. CODE shall mean the Internal Revenue Code of 1986, as amended.

        D. COMMON STOCK shall mean the Corporation's common stock.

        E. CORPORATE TRANSACTION shall mean either of the following
stockholder-approved transactions to which the Corporation is a party:

             (i) a merger or consolidation in which securities possessing more
        than fifty percent (50%) of the total combined voting power of the
        Corporation's outstanding securities are transferred to a person or
        persons different from the persons holding those securities immediately
        prior to such transaction, or

            (ii) the sale, transfer or other disposition of all or substantially
        all of the Corporation's assets in complete liquidation or dissolution
        of the Corporation.

        F. CORPORATION shall mean Onyx Acceptance Corporation, a Delaware 
corporation.

        G. DOMESTIC RELATIONS ORDER shall mean any judgment, decree or order
(including approval of a property settlement agreement) which provides or
otherwise conveys, pursuant to applicable State domestic relations laws
(including community property laws), marital property rights to any spouse or
former spouse of the Optionee.

        H. EMPLOYEE shall mean an individual who is in the employ of the
Corporation (or any Parent or Subsidiary), subject to the control and direction
of the employer entity as to both the work to be performed and the manner and
method of performance.

        I. EXERCISE DATE shall mean the date on which the option shall have been
exercised in accordance with Paragraph 9 of the Agreement.

        J. EXERCISE PRICE shall mean the exercise price per share as specified
in the Grant Notice.

        K. EXPIRATION DATE shall mean the date on which the option expires as
specified in the Grant Notice.


                                      A-1.
<PAGE>   9
        L. FAIR MARKET VALUE per share of Common Stock on any relevant date
shall be determined in accordance with the following provisions:

             (i) If the Common Stock is at the time traded on the Nasdaq
        National Market, then the Fair Market Value shall be the closing selling
        price per share of Common Stock on the date in question, as the price is
        reported by the National Association of Securities Dealers on the Nasdaq
        National Market or any successor system. If there is no closing selling
        price for the Common Stock on the date in question, then the Fair Market
        Value shall be the closing selling price on the last preceding date for
        which such quotation exists.

            (ii) If the Common Stock is at the time listed on any Stock
        Exchange, then the Fair Market Value shall be the closing selling price
        per share of Common Stock on the date in question on the Stock Exchange
        determined by the Plan Administrator to be the primary market for the
        Common Stock, as such price is officially quoted in the composite tape
        of transactions on such exchange. If there is no closing selling price
        for the Common Stock on the date in question, then the Fair Market Value
        shall be the closing selling price on the last preceding date for which
        such quotation exists.

        M. GRANT DATE shall mean the date of grant of the option as specified in
the Grant Notice.

        N. GRANT NOTICE shall mean the Notice of Grant of Stock Option
accompanying the Agreement, pursuant to which Optionee has been informed of the
basic terms of the option evidenced hereby.

        O. INVOLUNTARY TERMINATION shall mean the termination of Optionee's
Service which occurs by reason of:

             (i) Optionee's involuntary dismissal or discharge by the
        Corporation for reasons other than Misconduct, or

            (ii) Optionee's voluntary resignation following (A) a change in
        Optionee's position with the Corporation (or Parent or Subsidiary
        employing Optionee) which materially reduces Optionee's level of
        responsibility, (B) a reduction in Optionee's level of compensation
        (including base salary, fringe benefits and participation in
        corporate-performance based bonus or incentive programs) by more than
        fifteen percent (15%) or (C) a relocation of Optionee's place of
        employment by more than fifty (50) miles, provided and only if such
        change, reduction or relocation is effected by the Corporation without
        Optionee's consent.



                                      A-2.
<PAGE>   10
        P. MISCONDUCT shall mean the commission of any act of fraud,
embezzlement or dishonesty by Optionee, any unauthorized use or disclosure by
Optionee of confidential information or trade secrets of the Corporation (or any
Parent or Subsidiary), or any other intentional misconduct by Optionee adversely
affecting the business or affairs of the Corporation (or any Parent or
Subsidiary) in a material manner. The foregoing definition shall not be deemed
to be inclusive of all the acts or omissions which the Corporation (or any
Parent or Subsidiary) may consider as grounds for the dismissal or discharge of
Optionee or any other individual in the Service of the Corporation (or any
Parent or Subsidiary).

        Q. NON-STATUTORY OPTION shall mean an option not intended to satisfy the
requirements of Code Section 422.

        R. NOTICE OF EXERCISE shall mean the notice of exercise in the form
attached hereto as Exhibit I.

        S. OPTION SHARES shall mean the number of shares of Common Stock subject
to the option as specified in the Grant Notice.

        T. OPTIONEE shall mean the person to whom the option is granted as
specified in the Grant Notice.

        U. PARENT shall mean any corporation (other than the Corporation) in an
unbroken chain of corporations ending with the Corporation, provided each
corporation in the unbroken chain (other than the Corporation) owns, at the time
of the determination, stock possessing fifty percent (50%) or more of the total
combined voting power of all classes of stock in one of the other corporations
in such chain.

        V. PERMANENT DISABILITY shall mean the inability of Optionee to engage
in any substantial gainful activity by reason of any medically determinable
physical or mental impairment which is expected to result in death or has lasted
or can be expected to last for a continuous period of twelve (12) months or
more.

        W. PLAN shall mean the Corporation's 1998 Non-Officer Stock Option/Stock
Issuance Plan.

        X. PLAN ADMINISTRATOR shall mean either the Board or a committee of
Board members, to the extent the committee is at the time responsible for the
administration of the Plan.

        Y. QUALIFIED DOMESTIC RELATIONS ORDER shall mean a Domestic Relations
Order which substantially complies with the requirements of Code Section 414(p).
The Plan Administrator shall have the sole discretion to determine whether a
Domestic Relations Order is a Qualified Domestic Relations Order.



                                      A-3.
<PAGE>   11
        Z. SERVICE shall mean the Optionee's performance of services for the
Corporation (or any Parent or Subsidiary) in the capacity of an Employee, a
non-employee member of the board of directors or a consultant or independent
advisor.

        AA. STOCK EXCHANGE shall mean the American Stock Exchange or the New 
York Stock Exchange.

        AB. SUBSIDIARY shall mean any corporation (other than the Corporation)
in an unbroken chain of corporations beginning with the Corporation, provided
each corporation (other than the last corporation) in the unbroken chain owns,
at the time of the determination, stock possessing fifty percent (50%) or more
of the total combined voting power of all classes of stock in one of the other
corporations in such chain.



                                      A-4.

<PAGE>   1
                                                                    EXHIBIT 99.4



                                    ADDENDUM
                                       TO
                             STOCK OPTION AGREEMENT

                  The following provisions are hereby incorporated into, and are
hereby made a part of, that certain Stock Option Agreement dated
__________________ (the "Option Agreement") by and between Onyx Acceptance
Corporation (the "Corporation") and _____________________ ("Optionee")
evidencing the stock option granted on such date to Optionee under the terms of
the Corporation's 1996 Stock Option/Stock Issuance Plan, and such provisions
shall be effective immediately. All capitalized terms in this Addendum, to the
extent not otherwise defined herein, shall have the meanings assigned to them in
the Option Agreement.

                        LIMITED STOCK APPRECIATION RIGHT

                  1. Optionee is hereby granted a limited stock appreciation
right in tandem with the option, exercisable upon the terms set forth below:

                        (i) Should a Hostile Take-Over occur, then Optionee
         shall have the unconditional right (exercisable during the thirty
         (30)-day period following such Hostile Take-Over) to surrender the
         option to the Corporation, to the extent the option is at the time
         exercisable for vested shares of Common Stock. In return for the
         surrendered option, Optionee shall receive a cash distribution from the
         Corporation in an amount equal to the excess of (A) the Take-Over Price
         of the shares of Common Stock which are at the time vested under the
         surrendered option (or surrendered portion) over (B) the aggregate
         Exercise Price payable for such shares.

                       (ii) To exercise this limited stock appreciation right,
         Optionee must, during the applicable thirty (30)-day exercise period,
         provide the Corporation with written notice of the option surrender in
         which there is specified the number of Option Shares as to which the
         option is being surrendered. Such notice must be accompanied by the
         return of Optionee's copy of the Option Agreement, together with any
         written amendments to such Agreement. The cash distribution shall be
         paid to Optionee within five (5) days following such delivery date. The
         exercise of the limited stock appreciation right in accordance with the
         terms of this Addendum is hereby approved by the Plan Administrator, in
         advance of such exercise, and no further approval of the Plan
         Administrator or the Board shall be required at the time of the actual
         option surrender and cash distribution. Upon receipt of such cash
         distribution, the option shall be cancelled with respect to the Option
         Shares for which the option has been surrendered, and Optionee shall
         cease to have any further right to acquire those Option Shares under
         the Option Agreement. The option shall, however, remain outstanding and
         exercisable for the balance of the Option Shares (if any) in accordance
         with the terms of the Option Agreement, and the Corporation shall issue
         a new stock option agreement (substantially in the same form of the
         surrendered Option Agreement) for those remaining Option Shares.



<PAGE>   2
                      (iii) In no event may this limited stock appreciation
         right be exercised when there is not a positive spread between the Fair
         Market Value of the Option Shares and the aggregate Exercise Price
         payable for such shares. This limited stock appreciation right shall in
         all events terminate upon the expiration or sooner termination of the
         option term and may not be assigned or transferred by Optionee.

                  2. For purposes of this Addendum, the following definitions
shall be in effect:

                        (i) A HOSTILE TAKE-OVER shall be deemed to occur in the
         event (A) any person or related group of persons (other than the
         Corporation or a person that directly or indirectly controls, is
         controlled by, or is under common control with, the Corporation)
         directly or indirectly acquires beneficial ownership (within the
         meaning of Rule 13d-3 of the Securities Exchange Act of 1934, as
         amended) of securities possessing more than fifty percent (50%) of the
         total combined voting power of the Corporation's outstanding securities
         pursuant to a tender or exchange offer made directly to the
         Corporation's stockholders which the Board does not recommend such
         stockholders to accept, AND (B) more than fifty percent (50%) of the
         securities so acquired in such tender or exchange offer are accepted
         from holders other than the officers and directors of the Corporation
         subject to the short-swing profit restrictions of Section 16 of the
         Securities Exchange Act of 1934, as amended.

                       (ii) The TAKE-OVER PRICE per share shall be deemed to be
         equal to the greater of (A) the Fair Market Value per Option Share on
         the option surrender date or (B) the highest reported price per share
         of Common Stock paid by the tender offeror in effecting the Hostile
         Take-Over. However, if the surrendered option is designated as an
         Incentive Option in the Grant Notice, then the Take-Over Price shall
         not exceed the clause (A) price per share.



                                       2
<PAGE>   3
                  IN WITNESS WHEREOF, Onyx Acceptance Corporation has caused
this Addendum to be executed by its duly-authorized officer, and Optionee has
executed this Addendum, all as of the Effective Date specified below.



                                       ONYX ACCEPTANCE CORPORATION

                                       By:______________________________________

                                       Title:___________________________________



                                       _________________________________________
                                       OPTIONEE



EFFECTIVE DATE:_____________________, 199_



                                       3

<PAGE>   1
                                                                    EXHIBIT 99.5



                                    ADDENDUM
                                       TO
                             STOCK OPTION AGREEMENT

               The following provisions are hereby incorporated into, and are
hereby made a part of, that certain Stock Option Agreement dated 2~ (the "Option
Agreement") by and between Onyx Acceptance Corporation (the "Corporation") and
1~ ("Optionee") evidencing the stock option granted on such date to Optionee
under the terms of the Corporation's 1996 Stock Option/Stock Issuance Plan, and
such provisions shall be effective immediately. All capitalized terms in this
Addendum, to the extent not otherwise defined herein, shall have the meanings
assigned to them in the Option Agreement.

                        INVOLUNTARY TERMINATION FOLLOWING
                                CHANGE IN CONTROL

               1. The exercisability of the option shall not accelerate upon the
occurrence of a Change in Control, and the option shall, over Optionee's
continued period of Service after the Change in Control, continue to become
exercisable for the Option Shares in accordance with the provisions of the
Option Agreement. However, immediately upon an Involuntary Termination of
Optionee's Service within eighteen (18) months following the Change in Control,
the exercisability of this option, to the extent the option is at the time
outstanding but not otherwise fully exercisable, shall automatically accelerate
so that the option shall immediately become fully exercisable for all the Option
Shares at the time subject to the option and may be exercised for any or all of
those shares as fully vested shares of Common Stock at any time prior to the
earlier of (i) the Expiration Date or (ii) the expiration of the one (1)-year
period measured from the date of the Involuntary Termination.

               2. For purposes of this Addendum, a CHANGE IN CONTROL shall be
deemed to occur in the event of a change in ownership or control of the
Corporation effected through either of the following transactions:

                    (i) the acquisition, directly or indirectly, by any person
        or related group of persons (other than the Corporation or a person that
        directly or indirectly controls, is controlled by, or is under common
        control with, the Corporation) of beneficial ownership (within the
        meaning of Rule 13d-3 of the Securities Exchange Act of 1934, as
        amended) of securities possessing more than fifty percent (50%) of the
        total combined voting power of the Corporation's outstanding securities
        pursuant to a tender or exchange offer made directly to the
        Corporation's stockholders which the Board does not recommend such
        stockholders to accept, or


<PAGE>   2
                   (ii) a change in the composition of the Board over a period
        of thirty-six (36) consecutive months or less such that a majority of
        the Board members ceases by reason of one or more contested elections
        for Board membership, to be comprised of individuals who either (A) have
        been Board members continuously since the beginning of such period or
        (B) have been elected or nominated for election as Board members during
        such period by at least a majority of the Board members described in
        clause (A) who were still in office at the time such election or
        nomination was approved by the Board.

               3. The provisions of Paragraph 1 of this Addendum shall govern
the period for which the option is to remain exercisable following the
Involuntary Termination of Optionee's Service within eighteen (18) months after
the Change in Control and shall supersede any provisions to the contrary in the
Option Agreement.

               IN WITNESS WHEREOF, Onyx Acceptance Corporation has caused this
Addendum to be executed by its duly-authorized officer, and Optionee has
executed this Addendum, all as of the Effective Date specified below.

                                       ONYX ACCEPTANCE CORPORATION

                                       By:______________________________________

                                       Title:___________________________________


                                       _________________________________________
                                       1~, OPTIONEE


EFFECTIVE DATE:____________, 199__



                                             2.

<PAGE>   1
                                                                    EXHIBIT 99.6




                                    ADDENDUM
                                       TO
                             STOCK OPTION AGREEMENT


                  The following provisions are hereby incorporated into, and are
hereby made a part of, that certain Stock Option Agreement dated (2) (the
"Option Agreement") by and between Onyx Acceptance Corporation (the
"Corporation") and (1) ("Optionee") evidencing the non-statutory stock option
granted on such date to Optionee under the terms of the Corporation's 1996 Stock
Option/Stock Issuance Plan, and such provisions shall be effective immediately.
Capitalized terms in this Addendum, to the extent not otherwise defined herein,
shall have the meanings assigned to such terms in the Option Agreement.

                              SPECIAL TAX ELECTIONS

                  1. STOCK WITHHOLDING. Optionee is hereby granted the election
to have the Corporation withhold, at the time the option is exercised, a portion
of the purchased Option Shares with an aggregate Fair Market Value not to exceed
one hundred percent (100%) of the applicable Federal, state and local income and
employment tax withholding liability (the "Taxes") Optionee incurs in connection
with the option exercise.

                           Any such exercise of the election must be effected in
accordance with the following terms and conditions:

                                (i) The election must be made on or before the
         date the liability for the Taxes is determined (the "Tax Determination
         Date").

                                (ii) The election shall be irrevocable.

                                (iii) The election shall be subject to the
         approval of the Plan Administrator, and none of the Option Shares shall
         be withheld in satisfaction of the Taxes, except to the extent the
         election is approved by the Plan Administrator.

                                (iv) The Option Shares withheld pursuant to the
         election shall be valued at Fair Market Value on the Tax Determination
         Date.

                                (v) In no event may the number of shares of
         Common Stock requested to be withheld exceed in Fair Market Value the
         dollar amount of the Taxes.

                  2. STOCK DELIVERY. Optionee is hereby granted the election to
deliver, at the time the option is exercised, one or more shares of Common Stock
previously acquired by Optionee (other than in connection with the acquisition
triggering the Taxes) with an aggregate Fair Market Value not to exceed one
hundred percent (100%) of the Taxes.

                           Any such exercise of the election must be effected in
accordance with the following terms and conditions:

<PAGE>   2
                                (i) The election must be made on or before the
         Tax Determination Date for the Taxes.

                                (ii) The election shall be irrevocable.

                                (iii) The election shall be subject to the
         approval of the Plan Administrator, and none of the delivered shares of
         Common Stock shall be accepted in satisfaction of the Taxes, except to
         the extent the election is approved by the Plan Administrator.

                                (iv) The shares of Common Stock delivered in
         satisfaction of the Taxes shall be valued at Fair Market Value on the
         Tax Determination Date.

                                (v) In no event may the number of delivered
         shares exceed in Fair Market Value the dollar amount of the Taxes.


                  IN WITNESS WHEREOF, Onyx Acceptance Corporation has caused
this Addendum to be executed by its duly-authorized officer, and Optionee has
executed this Addendum, all as of the Effective Date specified below.



                                       ONYX ACCEPTANCE CORPORATION

                                       By:______________________________________

                                       Title:___________________________________


                                       _________________________________________
                                       (1), OPTIONEE



EFFECTIVE DATE:_____________, 199__



                                       2

<PAGE>   1
                                                                    EXHIBIT 99.7



                                                                   INITIAL GRANT

                           ONYX ACCEPTANCE CORPORATION
                    NOTICE OF GRANT OF NON-EMPLOYEE DIRECTOR
                             AUTOMATIC STOCK OPTION

               Notice is hereby given of the following option grant (the
"Option") to purchase shares of the Common Stock of Onyx Acceptance Corporation
(the "Corporation"):

               Optionee:________________________________________________________
               Grant Date:______________________________________________________
               Exercise Price:  $_______________________per share
               Number of Option Shares:  10,000 shares
               Expiration Date:_________________________________________________
               Type of Option:      Non-Statutory Stock Option
               Date Exercisable:  Immediately Exercisable

               Vesting Schedule: The Option Shares shall be unvested and subject
               to repurchase by the Corporation at the Exercise Price paid per
               share. Optionee shall acquire a vested interest in, and the
               Corporation's repurchase right will accordingly lapse with
               respect to, the Option Shares in a series of twenty-four (24)
               successive equal monthly installments upon the Optionee's
               completion of each month of service as a member of the
               Corporation's Board of Directors (the "Board") over the
               twenty-four (24)-month period measured from the Grant Date. In no
               event shall any additional Option Shares vest after Optionee's
               cessation of Board service.

               Optionee understands and agrees that the Option is granted
subject to and in accordance with the terms of the automatic option grant
program under the Onyx Acceptance Corporation 1996 Stock Option/Stock Issuance
Plan (the "Plan"). Optionee further agrees to be bound by the terms of the Plan
and the terms of the Option as set forth in the Automatic Stock Option Agreement
attached hereto as Exhibit A.

               Optionee hereby acknowledges receipt of a copy of the official
prospectus for the Plan in the form attached hereto as Exhibit B. A copy of the
Plan is available upon request made to the Corporate Secretary at the
Corporation's principal offices.

<PAGE>   2
               REPURCHASE RIGHT. OPTIONEE HEREBY AGREES THAT ALL OPTION SHARES
ACQUIRED UPON THE EXERCISE OF THE OPTION SHALL BE SUBJECT TO A REPURCHASE RIGHT
EXERCISABLE BY THE CORPORATION AND ITS ASSIGNS. THE TERMS OF SUCH RIGHT SHALL BE
SPECIFIED IN A STOCK PURCHASE AGREEMENT, IN FORM AND SUBSTANCE SATISFACTORY TO
THE CORPORATION, EXECUTED BY OPTIONEE AT THE TIME OF THE OPTION EXERCISE.

               No Impairment of Rights. Nothing in this Notice or the attached
Automatic Stock Option Agreement or in the Plan shall interfere with or
otherwise restrict in any way the rights of the Corporation and the
Corporation's stockholders to remove Optionee from the Board at any time in
accordance with the provisions of applicable law.

               Definitions. All capitalized terms in this Notice shall have the
meaning assigned to them in this Notice or in the attached Automatic Stock
Option Agreement.

____________________, 199__
        Date


                                       ONYX ACCEPTANCE CORPORATION


                                       By:______________________________________

                                       Title:___________________________________



                                       _________________________________________
                                       OPTIONEE

                                       Address:_________________________________

                                       _________________________________________

ATTACHMENTS
Exhibit A - Automatic Stock Option Agreement
Exhibit B - Plan Summary and Prospectus



                                       2.
<PAGE>   3
                                    EXHIBIT A

                        AUTOMATIC STOCK OPTION AGREEMENT


<PAGE>   4
                                    EXHIBIT B

                           PLAN SUMMARY AND PROSPECTUS


<PAGE>   1
                                                                    EXHIBIT 99.8



                                                                    ANNUAL GRANT


                           ONYX ACCEPTANCE CORPORATION
                    NOTICE OF GRANT OF NON-EMPLOYEE DIRECTOR
                             AUTOMATIC STOCK OPTION

               Notice is hereby given of the following option grant (the
"Option") to purchase shares of the Common Stock of Onyx Acceptance Corporation
(the "Corporation"):

               Optionee:________________________________________________________
               Grant Date:______________________________________________________
               Exercise Price:  $_______________________per share
               Number of Option Shares: 7,000 shares
               Expiration Date:_________________________________________________
               Type of Option:      Non-Statutory Stock Option
               Date Exercisable: Immediately Exercisable

               Vesting Schedule: The Option Shares shall be unvested and subject
               to repurchase by the Corporation at the Exercise Price paid per
               share. Optionee shall acquire a vested interest in, and the
               Corporation's repurchase right will accordingly lapse with
               respect to, the Option Shares in a series of twelve (12)
               successive equal monthly installments upon the Optionee's
               completion of each month of service as a member of the
               Corporation's Board of Directors (the "Board") over the twelve
               (12)-month period measured from the Grant Date. In no event shall
               any additional Option Shares vest after Optionee's cessation of
               Board service.

               Optionee understands and agrees that the Option is granted
subject to and in accordance with the terms of the automatic option grant
program under the Onyx Acceptance Corporation 1996 Stock Option/Stock Issuance
Plan (the "Plan"). Optionee further agrees to be bound by the terms of the Plan
and the terms of the Option as set forth in the Automatic Stock Option Agreement
attached hereto as Exhibit A.


<PAGE>   2
               Optionee hereby acknowledges receipt of a copy of the official
prospectus for the Plan in the form attached hereto as Exhibit B. A copy of the
Plan is available upon request made to the Corporate Secretary at the
Corporation's principal offices.

               REPURCHASE RIGHT. OPTIONEE HEREBY AGREES THAT ALL OPTION SHARES
ACQUIRED UPON THE EXERCISE OF THE OPTION SHALL BE SUBJECT TO A REPURCHASE RIGHT
EXERCISABLE BY THE CORPORATION AND ITS ASSIGNS. THE TERMS OF SUCH RIGHT SHALL BE
SPECIFIED IN A STOCK PURCHASE AGREEMENT, IN FORM AND SUBSTANCE SATISFACTORY TO
THE CORPORATION, EXECUTED BY OPTIONEE AT THE TIME OF THE OPTION EXERCISE.

               No Impairment of Rights. Nothing in this Notice or the attached
Automatic Stock Option Agreement or in the Plan shall interfere with or
otherwise restrict in any way the rights of the Corporation and the
Corporation's stockholders to remove Optionee from the Board at any time in
accordance with the provisions of applicable law.

               Definitions. All capitalized terms in this Notice shall have the
meaning assigned to them in this Notice or in the attached Automatic Stock
Option Agreement.

______________________, 199__
        Date


                                       ONYX ACCEPTANCE CORPORATION


                                       By:______________________________________

                                       Title:___________________________________



                                       _________________________________________
                                       OPTIONEE

                                       Address:_________________________________

                                       _________________________________________


ATTACHMENTS
Exhibit A - Automatic Stock Option Agreement
Exhibit B - Plan Summary and Prospectus



                                       2.
<PAGE>   3
                                    EXHIBIT A

                        AUTOMATIC STOCK OPTION AGREEMENT



<PAGE>   4
                                    EXHIBIT B

                           PLAN SUMMARY AND PROSPECTUS



<PAGE>   1
                                                                    EXHIBIT 99.9



                           ONYX ACCEPTANCE CORPORATION
                        AUTOMATIC STOCK OPTION AGREEMENT



RECITALS

        A. The Corporation has implemented an automatic option grant program
under the Plan pursuant to which eligible non-employee members of the Board will
automatically receive special option grants at periodic intervals over their
period of Board service in order to provide such individuals with a meaningful
incentive to continue to serve as members of the Board.

        B. Optionee is an eligible non-employee Board member, and this Agreement
is executed pursuant to, and is intended to carry out the purposes of, the Plan
in connection with the automatic grant of an option to purchase shares of Common
Stock under the Plan.

        C. All capitalized terms in this Agreement shall have the meaning
assigned to them in the attached Appendix.

               NOW, THEREFORE, it is hereby agreed as follows:

               1. GRANT OF OPTION. The Corporation hereby grants to Optionee, as
of the Grant Date, a Non-Statutory Option to purchase up to the number of Option
Shares specified in the Grant Notice. The Option Shares shall be purchasable
from time to time during the option term specified in Paragraph 2 at the
Exercise Price.

               2. OPTION TERM. This option shall have a term of ten (10) years
measured from the Grant Date and shall accordingly expire at the close of
business on the Expiration Date, unless sooner terminated in accordance with
Paragraph 5, 6 or 7.

               3. LIMITED TRANSFERABILITY. This option may, in connection with
the Optionee's estate plan, be assigned in whole or in part during Optionee's
lifetime to one or more members of the Optionee's immediate family or to a trust
established for the exclusive benefit of one or more such family members. The
assigned portion shall be exercisable only by the person or persons who acquire
a proprietary interest in the option pursuant to such assignment. The terms
applicable to the assigned portion shall be the same as those in effect for this
option immediately prior to such assignment. Should the Optionee die while
holding this option, then this option shall be transferred in accordance with
Optionee's will or the laws of descent and distribution.

<PAGE>   2
               4. EXERCISABILITY/VESTING.

                      (a) This option shall be immediately exercisable for any
or all of the Option Shares, whether or not the Option Shares are vested in
accordance with the Vesting Schedule and shall remain so exercisable until the
Expiration Date or sooner termination of the option term under Paragraph 5, 6 or
7.

                      (b) Optionee shall, in accordance with the Vesting
Schedule, vest in the Option Shares in one or more installments over his or her
period of Board service. Vesting in the Option Shares may be accelerated
pursuant to the provisions of Paragraph 5, 6 or 7. In no event, however, shall
any additional Option Shares vest following Optionee's cessation of service as a
Board member.

               5. CESSATION OF BOARD SERVICE. Should Optionee's service as a
Board member cease while this option remains outstanding, then the option term
specified in Paragraph 2 shall terminate (and this option shall cease to be
outstanding) prior to the Expiration Date in accordance with the following
provisions:

                      (a) Should Optionee cease to serve as a Board member for
any reason (other than death or Permanent Disability) while holding this option,
then the period for exercising this option shall be reduced to a twelve
(12)-month period (commencing with the date of such cessation of Board service),
but in no event shall this option be exercisable at any time after the
Expiration Date. During such limited period of exercisability, this option may
not be exercised in the aggregate for more than the number of Option Shares (if
any) in which Optionee is vested on the date Optionee ceases service as a Board
member. Upon the earlier of (i) the expiration of such twelve (12)-month period
or (ii) the specified Expiration Date, the option shall terminate and cease to
be exercisable with respect to any vested Option Shares for which the option has
not been exercised.

                      (b) Should Optionee die during the twelve (12)-month
period following his or her cessation of Board service, then the personal
representative of Optionee's estate or the person or persons to whom the option
is transferred pursuant to Optionee's will or in accordance with the laws of
descent and distribution shall have the right to exercise this option for any or
all of the Option Shares in which Optionee is vested at the time of Optionee's
cessation of Board service (less any Option Shares purchased by Optionee after
such cessation of Board service but prior to death). Such right of exercise
shall terminate, and this option shall accordingly cease to be exercisable for
such vested Option Shares, upon the earlier of (i) the expiration of the twelve
(12)-month period measured from the date of Optionee's cessation of Board
service or (ii) the specified Expiration Date.

                      (c) Should Optionee cease service as a Board member by
reason of death or Permanent Disability, then all Option Shares at the time
subject to this option but not otherwise vested shall vest in full so that
Optionee (or the personal representative of Optionee's estate or the person or
persons to whom the option is transferred upon Optionee's death) shall



                                       2.
<PAGE>   3
have the right to exercise this option for any or all of the Option Shares as
fully-vested shares of Common Stock at any time prior to the earlier of (i) the
expiration of the twelve (12)-month period measured from the date of Optionee's
cessation of Board service or (ii) the specified Expiration Date.

                      (d) Upon Optionee's cessation of Board service for any
reason other than death or Permanent Disability, this option shall immediately
terminate and cease to be outstanding with respect to any and all Option Shares
in which Optionee is not otherwise at that time vested in accordance with the
normal Vesting Schedule or the special vesting acceleration provisions of
Paragraph 6 or 7 below.

                      (e) In the event of a Corporate Transaction or Change in
Control, the provisions of Paragraph 6 or 7 shall govern the period for which
this option is to remain exercisable following Optionee's cessation of Board
service and shall supersede any provisions to the contrary in this paragraph.

               6. CORPORATE TRANSACTION.

                      (a) In the event of a Corporate Transaction, all Option
Shares at the time subject to this option but not otherwise vested shall
automatically vest so that this option shall, immediately prior to the effective
date of such Corporate Transaction, become exercisable for any or all of the
Option Shares as fully-vested shares of Common Stock. Immediately following the
Corporate Transaction, this option shall terminate and cease to be exercisable
except to the extent assumed by the successor corporation (or parent thereof) in
connection with such Corporate Transaction.

                      (b) If this option is assumed in connection with a
Corporate Transaction, then this option shall be appropriately adjusted,
immediately after such Corporate Transaction, to apply to the number and class
of securities which would have been issuable to Optionee in consummation of such
Corporate Transaction had the option been exercised immediately prior to such
Corporate Transaction, and appropriate adjustments shall also be made to the
Exercise Price, provided the aggregate Exercise Price shall remain the same.

                      (c) This Agreement shall not in any way affect the right
of the Corporation to adjust, reclassify, reorganize or otherwise change its
capital or business structure or to merge, consolidate, dissolve, liquidate or
sell or transfer all or any part of its business or assets.

               7. CHANGE IN CONTROL/HOSTILE TAKE-OVER.

                      (a) All Option Shares subject to this option at the time
of a Change in Control but not otherwise vested shall automatically vest so that
this option shall, immediately prior to the effective date of such Change in
Control, become fully exercisable for all of the Option Shares at the time
subject to this option and may be exercised for all or any portion of



                                       3.
<PAGE>   4
such shares as fully-vested shares of Common Stock. This option shall remain
exercisable for such fully-vested Option Shares until the earliest to occur of
(i) the Expiration Date, (ii) the sooner termination of this option in
accordance with Paragraph 5 or 6 or (iii) the surrender of the option in
connection with a Hostile Take-Over.

                      (b) In connection with a Hostile Take-Over, Optionee shall
have the unconditional right (exercisable during the thirty (30)-day period
immediately following the consummation of such Hostile Take-Over) to surrender
this option to the Corporation in exchange for a cash distribution from the
Corporation in an amount equal to the excess of (i) the Take-Over Price of the
Option Shares at the time subject to the surrendered option (whether or not
those Option Shares are otherwise at the time vested) over (ii) the aggregate
Exercise Price payable for such shares. This Paragraph 7(b) limited stock
appreciation right shall in all events terminate upon the expiration or sooner
termination of the option term and may not be assigned or transferred by
Optionee.

                      (c) To exercise the Paragraph 7(b) limited stock
appreciation right, Optionee must, during the applicable thirty (30)-day
exercise period, provide the Corporation with written notice of the option
surrender in which there is specified the number of Option Shares as to which
the Option is being surrendered. Such notice must be accompanied by the return
of Optionee's copy of this Agreement, together with any written amendments to
such Agreement. The cash distribution shall be paid to Optionee within five (5)
days following such delivery date. The exercise of such limited stock
appreciation right in accordance with the terms of this Paragraph 7 has been
pre-approved pursuant to the express provisions of the Automatic Option Grant
Program, and neither the approval of the Plan Administrator nor the consent of
the Board shall be required at the time of the actual option surrender and cash
distribution. Upon receipt of such cash distribution, this option shall be
cancelled with respect to the Option Shares subject to the surrendered option
(or the surrendered portion) and Optionee shall cease to have any further right
to acquire those Option Shares under this Agreement. The option shall, however,
remain outstanding for the balance of the Option Shares (if any) in accordance
with the terms of this Agreement, and the Corporation shall issue a new stock
option agreement (substantially in the same form as this Agreement) for those
remaining Option Shares.

               8. ADJUSTMENT IN OPTION SHARES. Should any change be made to the
Common Stock by reason of any stock split, stock dividend, recapitalization,
combination of shares, exchange of shares or other change affecting the
outstanding Common Stock as a class without the Corporation's receipt of
consideration, appropriate adjustments shall be made to (i) the total number
and/or class of securities subject to this option and (ii) the Exercise Price in
order to reflect such change and thereby preclude a dilution or enlargement of
benefits hereunder.

               9. STOCKHOLDER RIGHTS. The holder of this option shall not have
any stockholder rights with respect to the Option Shares until such person shall
have exercised the option, paid the Exercise Price and become a holder of record
of the purchased shares.



                                       4.
<PAGE>   5
               10. MANNER OF EXERCISING OPTION.

                      (a) In order to exercise this option with respect to all
or any part of the Option Shares for which this option is at the time
exercisable, Optionee (or any other person or persons exercising the option)
must take the following actions:

                                (i) To the extent the option is exercised for
         vested Option Shares, execute and deliver to the Corporation a Notice
         of Exercise for the Option Shares for which the option is exercised. To
         the extent this option is exercised for unvested Option Shares, execute
         and deliver to the Corporation a Purchase Agreement.

                                (ii) Pay the aggregate Exercise Price for the
         purchased shares in one or more of the following forms:

                                    (A) cash or check made payable to the
               Corporation,

                                    (B) shares of Common Stock held by Optionee
               (or any other person or persons exercising the option) for the
               requisite period necessary to avoid a charge to the Corporation's
               earnings for financial reporting purposes and valued at Fair
               Market Value on the Exercise Date, or

                                    (C) to the extent the option is exercised
               for vested Option Shares, through a special sale and remittance
               procedure pursuant to which Optionee (or any other person or
               persons exercising the option) shall concurrently provide
               irrevocable written instructions (I) to a Corporation-designated
               brokerage firm to effect the immediate sale of the purchased
               shares and remit to the Corporation, out of the sale proceeds
               available on the settlement date, sufficient funds to cover the
               aggregate Exercise Price payable for the purchased shares plus
               all applicable Federal, state and local income and employment
               taxes required to be withheld by the Corporation by reason of
               such exercise and (II) to the Corporation to deliver the
               certificates for the purchased shares directly to such brokerage
               firm in order to complete the sale.

                      Except to the extent the sale and remittance procedure is
               utilized in connection with the option exercise, payment of the
               Exercise Price must accompany the Notice of Exercise (or the
               Purchase Agreement) delivered to the Corporation in connection
               with the option exercise.



                                       5.
<PAGE>   6
                                (iii) Furnish to the Corporation appropriate
         documentation that the person or persons exercising the option (if
         other than Optionee) have the right to exercise this option.

                      (b) As soon after the Exercise Date as practical, the
Corporation shall issue to or on behalf of Optionee (or any other person or
persons exercising this option) a certificate for the purchased Option Shares,
with the appropriate legends affixed thereto. To the extent any such Option
Shares are unvested, the certificates for those Option Shares shall be endorsed
with an appropriate legend evidencing the Corporation's repurchase rights and
may be held in escrow with the Corporation until such shares vest.

                      (c) In no event may this option be exercised for any
fractional shares.

               11. COMPLIANCE WITH LAWS AND REGULATIONS.

                      (a) The exercise of this option and the issuance of the
Option Shares upon such exercise shall be subject to compliance by the
Corporation and Optionee with all applicable requirements of law relating
thereto and with all applicable regulations of any stock exchange (or the Nasdaq
National Market, if applicable) on which the Common Stock may be listed for
trading at the time of such exercise and issuance.

                      (b) The inability of the Corporation to obtain approval
from any regulatory body having authority deemed by the Corporation to be
necessary to the lawful issuance and sale of any Common Stock pursuant to this
option shall relieve the Corporation of any liability with respect to the
non-issuance or sale of the Common Stock as to which such approval shall not
have been obtained. The Corporation, however, shall use its best efforts to
obtain all such approvals.

               12. SUCCESSORS AND ASSIGNS. Except to the extent otherwise
provided in Paragraph 3 or 6, the provisions of this Agreement shall inure to
the benefit of, and be binding upon, the Corporation and its successors and
assigns and Optionee, Optionee's assigns and the legal representatives, heirs
and legatees of Optionee's estate.

               13. NOTICES. Any notice required to be given or delivered to the
Corporation under the terms of this Agreement shall be in writing and addressed
to the Corporation at its principal corporate offices. Any notice required to be
given or delivered to Optionee shall be in writing and addressed to Optionee at
the address indicated below Optionee's signature line on the Grant Notice. All
notices shall be deemed effective upon personal delivery or upon deposit in the
U.S. mail, postage prepaid and properly addressed to the party to be notified.

               14. CONSTRUCTION. This Agreement and the option evidenced hereby
are made and granted pursuant to the Plan and are in all respects limited by and
subject to the terms of the Plan.



                                       6.
<PAGE>   7
               15. GOVERNING LAW. The interpretation, performance and
enforcement of this Agreement shall be governed by the laws of the State of
California without resort to that State's conflict-of-laws rules.



                                       7.
<PAGE>   8
                                    EXHIBIT I

                               NOTICE OF EXERCISE


               I hereby notify Onyx Acceptance Corporation (the "Corporation")
that I elect to purchase shares of the Corporation's Common Stock (the
"Purchased Shares") at the option exercise price of $_______ per share (the
"Exercise Price") pursuant to that certain option (the "Option") granted to me
under the Corporation's 1996 Stock Option/Stock Issuance Plan on ______________,
199__.

               Concurrently with the delivery of this Exercise Notice to the
Corporation, I shall hereby pay to the Corporation the Exercise Price for the
Purchased Shares in accordance with the provisions of my agreement with the
Corporation (or other documents) evidencing the Option and shall deliver
whatever additional documents may be required by such agreement as a condition
for exercise. Alternatively, I may utilize the special broker-dealer sale and
remittance procedure specified in my agreement to effect payment of the Exercise
Price for any Purchased Shares in which I am vested at the time of exercise of
the Option.


___________________, 199__
Date


                                       _________________________________________
                                       Optionee

                                       Address:_________________________________

                                       _________________________________________

Print name in exact manner
it is to appear on the
stock certificate:                     _________________________________________

Address to which certificate
is to be sent, if different
from address above:                    _________________________________________



Social Security Number:                _________________________________________


                                    APPENDIX

<PAGE>   9
        The following definitions shall be in effect under the Agreement:

        A. AGREEMENT shall mean this Automatic Stock Option Agreement.

        B. BOARD shall mean the Corporation's Board of Directors.

        C. CHANGE IN CONTROL shall mean a change in ownership or control of the
Corporation effected through either of the following transactions:

             (i) the acquisition, directly or indirectly, by any person or
        related group of persons (other than the Corporation or a person that
        directly or indirectly controls, is controlled by, or is under common
        control with, the Corporation) of beneficial ownership (within the
        meaning of Rule 13d-3 of the 1934 Act) of securities possessing more
        than fifty percent (50%) of the total combined voting power of the
        Corporation's outstanding securities pursuant to a tender or exchange
        offer made directly to the Corporation's stockholders which the Board
        does not recommend such stockholders to accept, or

            (ii) a change in the composition of the Board over a period of
        thirty-six (36) consecutive months or less such that a majority of the
        Board members ceases, by reason of one or more contested elections for
        Board membership, to be comprised of individuals who either (A) have
        been Board members continuously since the beginning of such period or
        (B) have been elected or nominated for election as Board members during
        such period by at least a majority of the Board members described in
        clause (A) who were still in office at the time the Board approved such
        election or nomination.

        D. CODE shall mean the Internal Revenue Code of 1986, as amended.

        E. COMMON STOCK shall mean the Corporation's common stock.

        F. CORPORATE TRANSACTION shall mean either of the following
stockholder-approved transactions to which the Corporation is a party:

             (i) a merger or consolidation in which securities possessing more
        than fifty percent (50%) of the total combined voting power of the
        Corporation's outstanding securities are transferred to a person or
        persons different from the persons holding those securities immediately
        prior to such transaction, or

            (ii) the sale, transfer or other disposition of all or substantially
        all of the Corporation's assets in complete liquidation or dissolution
        of the Corporation.



                                      A-2.
<PAGE>   10
        G. CORPORATION shall mean Onyx Acceptance Corporation, a Delaware
corporation, and any corporate successor to all or substantially all of the
assets or voting stock of Onyx Acceptance Corporation which shall by appropriate
action adopt the Plan.

        H. EXERCISE DATE shall mean the date on which the option shall have been
exercised in accordance with Paragraph 10 of the Agreement.

        I. EXERCISE PRICE shall mean the exercise price per share as specified
in the Grant Notice.

        J. EXPIRATION DATE shall mean the date on which the option expires as
specified in the Grant Notice.

        K. FAIR MARKET VALUE per share of Common Stock on any relevant date
shall be determined in accordance with the following provisions:

             (i) If the Common Stock is at the time traded on the Nasdaq
        National Market, then the Fair Market Value shall be the closing selling
        price per share of Common Stock on the date in question, as the price is
        reported by the National Association of Securities Dealers on the Nasdaq
        National Market or any successor system. If there is no closing selling
        price for the Common Stock on the date in question, then the Fair Market
        Value shall be the closing selling price on the last preceding date for
        which such quotation exists.

            (ii) If the Common Stock is at the time listed on any Stock
        Exchange, then the Fair Market Value shall be the closing selling price
        per share of Common Stock on the date in question on the Stock Exchange
        which serves as the primary market for the Common Stock, as such price
        is officially quoted in the composite tape of transactions on such
        exchange. If there is no closing selling price for the Common Stock on
        the date in question, then the Fair Market Value shall be the closing
        selling price on the last preceding date for which such quotation
        exists.

        L. GRANT DATE shall mean the date of grant of the option as specified in
the Grant Notice.

        M. GRANT NOTICE shall mean the Notice of Grant of Automatic Stock Option
accompanying the Agreement, pursuant to which Optionee has been informed of the
basic terms of the option evidenced hereby.

        N. HOSTILE TAKE-OVER shall mean a change in ownership of the Corporation
effected through the following transaction:



                                      A-3.

<PAGE>   11
               (i) the acquisition, directly or indirectly, by any person or
        related group of persons (other than the Corporation or a person that
        directly or indirectly controls, is controlled by, or is under common
        control with, the Corporation) of beneficial ownership (within the
        meaning of Rule 13d-3 of the 1934 Act) of securities possessing more
        than fifty percent (50%) of the total combined voting power of the
        Corporation's outstanding securities pursuant to a tender or exchange
        offer made directly to the Corporation's stockholders which the Board
        does not recommend such stockholders to accept, and

               (ii) more than fifty percent (50%) of the acquired securities are
        accepted from persons other than the officers and directors of the
        Corporation subject to the short-swing profit restrictions of Section 16
        of the 1934 Act.

        O. 1934 ACT shall mean the Securities Exchange Act of 1934, as amended.

        P. NON-STATUTORY OPTION shall mean an option not intended to satisfy the
requirements of Code Section 422.

        Q. NOTICE OF EXERCISE shall mean the notice of exercise in the form of
Exhibit I.

        R. OPTION SHARES shall mean the number of shares of Common Stock subject
to the option.

        S. OPTIONEE shall mean the person to whom the option is granted as
specified in the Grant Notice.

        T. PERMANENT DISABILITY shall mean the inability of Optionee to perform
his or her usual duties as a member of the Board by reason of any medically
determinable physical or mental impairment which is expected to result in death
or has lasted or can be expected to last for a continuous period of twelve (12)
months or more.

        U. PLAN shall mean the Corporation's 1996 Stock Option/Stock Issuance
Plan.

        V. PURCHASE AGREEMENT shall mean the stock purchase agreement (in form
and substance satisfactory to the Corporation) which grants the Corporation the
right to repurchase, at the Exercise Price, any and all unvested Option Shares
held by Optionee at the time of Optionee's cessation of Board service and which
precludes the sale, transfer or other disposition of any purchased Option Shares
while subject to such repurchase right.

        W. STOCK EXCHANGE shall mean the American Stock Exchange or the New York
Stock Exchange.

        X. TAKE-OVER PRICE shall mean the greater of (i) the Fair Market Value
per share of Common Stock on the date the option is surrendered to the
Corporation in connection with 



                                      A-4.

<PAGE>   12
a Hostile Take-Over or (ii) the highest reported price per share of Common Stock
paid by the tender offeror in effecting the Hostile Take-Over.


        Y. VESTING SCHEDULE shall mean the vesting schedule specified in the
Grant Notice.



                                      A-5.

<PAGE>   1
                                                                   EXHIBIT 99.13


                          ONYX ACCEPTANCE CORPORATION
               1998 NON-OFFICER STOCK OPTION/STOCK ISSUANCE PLAN

                                  ARTICLE ONE

                               GENERAL PROVISIONS


     I.     PURPOSE OF THE PLAN

            This 1998 Non-Officer Stock Option/Stock Issuance Plan is intended
to promote the interests of Onyx Acceptance Corporation, a Delaware corporation,
by providing eligible persons with the opportunity to acquire a proprietary
interest, or otherwise increase their proprietary interest, in the Corporation
as an incentive for them to remain in the service of the Corporation.

            Capitalized terms shall have the meanings assigned to such terms in
the attached Appendix.

    II.     STRUCTURE OF THE PLAN

            A.    The Plan shall be divided into two separate equity programs:

                     (i) the Discretionary Option Grant Program under which
      eligible persons may, at the discretion of the Plan Administrator, be
      granted options to purchase shares of Common Stock, and

                     (ii) the Stock Issuance Program under which eligible
      persons may, at the discretion of the Plan Administrator, be issued shares
      of Common Stock directly, either through the immediate purchase of such
      shares or as a bonus for services rendered the Corporation (or any Parent
      or Subsidiary).

            B. The provisions of Articles One and Four shall apply to all equity
programs under the Plan and shall accordingly govern the interests of all
persons under the Plan.

   III.     ADMINISTRATION OF THE PLAN

            A. Administration of the Plan with respect to all persons eligible
to participate in the Plan may, at the Board's discretion, be vested in the
Committee, or the Board may retain the power to administer those programs with
respect to all such persons.
<PAGE>   2

            B. Members of the Committee shall serve for such period of time as
the Board may determine and may be removed by the Board at any time. The Board
may also at any time terminate the functions of any Committee and reassume all
powers and authority previously delegated to such committee.

            C. The Plan Administrator shall, within the scope of its
administrative functions under the Plan, have full power and authority to
establish such rules and regulations as it may deem appropriate for proper
administration of the Plan and to make such determinations under, and issue such
interpretations of, the provisions of such programs and any outstanding options
or stock issuances thereunder as it may deem necessary or advisable. Decisions
of the Plan Administrator within the scope of its administrative functions under
the Plan shall be final and binding on all parties who have an interest in the
Plan or any option or stock issuance thereunder.

            D. Service on the Committee shall constitute service as a Board
member, and members of each such committee shall accordingly be entitled to full
indemnification and reimbursement as Board members for their service on such
committee. No member of the Committee shall be liable for any act or omission
made in good faith with respect to the Plan or any option grants or stock
issuances under the Plan.

    IV.     ELIGIBILITY

            A. The persons eligible to participate in the Discretionary Option
Grant and Stock Issuance Programs are as follows:

                      (i) Employees who are not officers or directors of the
      Corporation , and

                      (ii) consultants and other independent advisors who
      provide services to the Corporation (or any Parent or Subsidiary).

            B. The Plan Administrator shall have full authority (subject to the
provisions of the Plan) to determine, (i) with respect to the option grants
under the Discretionary Option Grant Program, which eligible persons are to
receive option grants, the time or times when such option grants are to be made,
the number of shares to be covered by each such grant, the time or times at
which each option is to become exercisable, the vesting schedule (if any)
applicable to the option shares and the maximum term for which the option is to
remain outstanding and (ii) with respect to stock issuances under the Stock
Issuance Program, which eligible persons are to receive stock issuances, the
time or times when such issuances are to be made, the number of shares to be
issued to each Participant, the vesting schedule (if any) applicable to the
issued shares and the consideration to be paid for such shares.


                                       2.
<PAGE>   3

            C. The Plan Administrator shall have the absolute discretion either
to grant options in accordance with the Discretionary Option Grant Program or to
effect stock issuances in accordance with the Stock Issuance Program.

     V.     STOCK SUBJECT TO THE PLAN

            A. The stock issuable under the Plan shall be shares of authorized
but unissued or reacquired Common Stock, including shares repurchased by the
Corporation on the open market. The maximum number of shares of Common Stock
which may be issued over the term of the Plan shall not exceed 170,000 shares.

            B. Shares of Common Stock subject to outstanding options shall be
available for subsequent issuance under the Plan to the extent (i) the options
expire or terminate for any reason prior to exercise in full or (ii) the options
are cancelled in accordance with the cancellation-regrant provisions of Article
Two. Unvested shares issued under the Plan and subsequently cancelled or
repurchased by the Corporation, at the original issue price paid per share,
pursuant to the Corporation's repurchase rights under the Plan, shall be added
back to the number of shares of Common Stock reserved for issuance under the
Plan and shall accordingly be available for reissuance through one or more
subsequent option grants or direct stock issuances under the Plan. However,
should the exercise price of an option under the Plan be paid with shares of
Common Stock or should shares of Common Stock otherwise issuable under the Plan
be withheld by the Corporation in satisfaction of the withholding taxes incurred
in connection with the exercise of an option or the vesting of a stock issuance
under the Plan, then the number of shares of Common Stock available for issuance
under the Plan shall be reduced by the gross number of shares for which the
option is exercised or which vest under the stock issuance, and not by the net
number of shares of Common Stock issued to the holder of such option or stock
issuance.

            C. Should any change be made to the Common Stock by reason of any
stock split, stock dividend, recapitalization, combination of shares, exchange
of shares or other change affecting the outstanding Common Stock as a class
without the Corporation's receipt of consideration, appropriate adjustments
shall be made to (i) the maximum number and/or class of securities issuable
under the Plan and (ii) the number and/or class of securities and the exercise
price per share in effect under each outstanding option in order to prevent the
dilution or enlargement of benefits thereunder. The adjustments determined by
the Plan Administrator shall be final, binding and conclusive.


                                       3.
<PAGE>   4
                                   ARTICLE TWO

                       DISCRETIONARY OPTION GRANT PROGRAM

     I.     OPTION TERMS

            Each option shall be a Non-Statutory Option and shall be evidenced
by one or more documents in the form approved by the Plan Administrator;
provided, however, that each such document shall comply with the terms specified
below.

            A.    Exercise Price.

                  1. The exercise price per share shall be fixed by the Plan
Administrator but shall not be less than eighty-five percent (85%) of the Fair
Market Value per share of Common Stock on the option grant date.

                  2. The exercise price shall become immediately due upon
exercise of the option and shall, subject to the provisions of Section I of
Article Five and the documents evidencing the option, be payable in one or more
of the forms specified below:

                      (i) cash or check made payable to the Corporation,

                      (ii) shares of Common Stock held for the requisite period
      necessary to avoid a charge to the Corporation's earnings for financial
      reporting purposes and valued at Fair Market Value on the Exercise Date,
      or

                      (iii) to the extent the option is exercised for vested
      shares, through a special sale and remittance procedure pursuant to which
      the Optionee shall concurrently provide irrevocable written instructions
      to (a) a Corporation-designated brokerage firm to effect the immediate
      sale of the purchased shares and remit to the Corporation, out of the sale
      proceeds available on the settlement date, sufficient funds to cover the
      aggregate exercise price payable for the purchased shares plus all
      applicable Federal, state and local income and employment taxes required
      to be withheld by the Corporation by reason of such exercise and (b) the
      Corporation to deliver the certificates for the purchased shares directly
      to such brokerage firm in order to complete the sale.

            Except to the extent such sale and remittance procedure is utilized,
payment of the exercise price for the purchased shares must be made on the
Exercise Date.

            B. Exercise and Term of Options. Each option shall be exercisable at
such time or times, during such period and for such number of shares as shall be
determined by the


                                       4.
<PAGE>   5

Plan Administrator and set forth in the documents evidencing the option.
However, no option shall have a term in excess of ten (10) years measured from
the option grant date.

            C.    Effect of Termination of Service.

                  1. The following provisions shall govern the exercise of any
options held by the Optionee at the time of cessation of Service or death:

                      (i) Any option outstanding at the time of the Optionee's
      cessation of Service for any reason shall remain exercisable for such
      period of time thereafter as shall be determined by the Plan Administrator
      and set forth in the documents evidencing the option, but no such option
      shall be exercisable after the expiration of the option term.

                      (ii) Any option exercisable in whole or in part by the
      Optionee at the time of death may be exercised subsequently by the
      personal representative of the Optionee's estate or by the person or
      persons to whom the option is transferred pursuant to the Optionee's will
      or in accordance with the laws of descent and distribution.

                      (iii) During the applicable post-Service exercise period,
      the option may not be exercised in the aggregate for more than the number
      of vested shares for which the option is exercisable on the date of the
      Optionee's cessation of Service. Upon the expiration of the applicable
      exercise period or (if earlier) upon the expiration of the option term,
      the option shall terminate and cease to be outstanding for any vested
      shares for which the option has not been exercised. However, the option
      shall, immediately upon the Optionee's cessation of Service, terminate and
      cease to be outstanding to the extent the option is not otherwise at that
      time exercisable for vested shares.

                      (iv) Should the Optionee's Service be terminated for
      Misconduct, then all outstanding options held by the Optionee shall
      terminate immediately and cease to be outstanding.

                      (v) In the event of an Involuntary Termination following a
      Corporate Transaction, the provisions of Section III of this Article Two
      shall govern the period for which the outstanding options are to remain
      exercisable following the Optionee's cessation of Service and shall
      supersede any provisions to the contrary in this section.

                  2. The Plan Administrator shall have the discretion,
exercisable either at the time an option is granted or at any time while the
option remains outstanding, to:


                                       5.
<PAGE>   6

                      (i) extend the period of time for which the option is to
      remain exercisable following the Optionee's cessation of Service from the
      period otherwise in effect for that option to such greater period of time
      as the Plan Administrator shall deem appropriate, but in no event beyond
      the expiration of the option term, and/or

                      (ii) permit the option to be exercised, during the
      applicable post-Service exercise period, not only with respect to the
      number of vested shares of Common Stock for which such option is
      exercisable at the time of the Optionee's cessation of Service but also
      with respect to one or more additional installments in which the Optionee
      would have vested under the option had the Optionee continued in Service.

            D. Stockholder Rights. The holder of an option shall have no
stockholder rights with respect to the shares subject to the option until such
person shall have exercised the option, paid the exercise price and become a
holder of record of the purchased shares.

            E. Repurchase Rights. The Plan Administrator shall have the
discretion to grant options which are exercisable for unvested shares of Common
Stock. Should the Optionee cease Service while holding such unvested shares, the
Corporation shall have the right to repurchase, at the exercise price paid per
share, any or all of those unvested shares. The terms upon which such repurchase
right shall be exercisable (including the period and procedure for exercise and
the appropriate vesting schedule for the purchased shares) shall be established
by the Plan Administrator and set forth in the document evidencing such
repurchase right.

            F. Limited Transferability of Options. During the lifetime of the
Optionee, the option may be assigned in whole or in part in accordance with the
terms of a Qualified Domestic Relations Order. The assigned portion may only be
exercised by the person or persons who acquire a proprietary interest in the
option pursuant to such Qualified Domestic Relations Order. The terms applicable
to the assigned portion shall be the same as those in effect for the option
immediately prior to such assignment and shall be set forth in such documents
issued to the assignee as the Plan Administrator may deem appropriate.

    II.     CORPORATE TRANSACTION/CHANGE IN CONTROL

            A. In the event of any Corporate Transaction, each outstanding
option shall automatically accelerate so that each such option shall,
immediately prior to the effective date of the Corporate Transaction, become
fully exercisable for all of the shares of Common Stock at the time subject to
such option and may be exercised for any or all of those shares as fully-vested
shares of Common Stock. However, an outstanding option shall NOT so accelerate
if and to the extent: (i) such option is, in connection with the Corporate
Transaction, either to be assumed by the successor corporation (or parent
thereof) or to be replaced with a comparable option to purchase shares of the
capital stock of the successor corporation (or parent thereof), (ii) such option
is to be replaced with a cash incentive program of the successor corporation


                                       6.
<PAGE>   7
which preserves the spread existing on the unvested option shares at the time of
the Corporate Transaction and provides for subsequent payout in accordance with
the same vesting schedule applicable to such option or (iii) the acceleration of
such option is subject to other limitations imposed by the Plan Administrator at
the time of the option grant. The determination of option comparability under
clause (i) above shall be made by the Plan Administrator, and its determination
shall be final, binding and conclusive.

            B. All outstanding repurchase rights shall also terminate
automatically, and the shares of Common Stock subject to those terminated rights
shall immediately vest in full, in the event of any Corporate Transaction,
except to the extent: (i) those repurchase rights are to be assigned to the
successor corporation (or parent thereof) in connection with such Corporate
Transaction or (ii) such accelerated vesting is precluded by other limitations
imposed by the Plan Administrator at the time the repurchase right is issued.

            C. The Plan Administrator shall have the discretion, exercisable
either at the time the option is granted or at any time while the option remains
outstanding, to provide for the automatic acceleration of one or more
outstanding options (and the automatic termination of one or more outstanding
repurchase rights with the immediate vesting of the shares of Common Stock
subject to those rights) upon the occurrence of a Corporate Transaction, whether
or not those options are to be assumed or replaced (or those repurchase rights
are to be assigned) in the Corporate Transaction. The Plan Administrator shall
also have the discretion to grant options which do not accelerate whether or not
such options are assumed (and to provide for repurchase rights that do not
terminate whether or not such rights are assigned) in connection with a
Corporate Transaction.

            D. Immediately following the consummation of the Corporate
Transaction, all outstanding options shall terminate and cease to be
outstanding, except to the extent assumed by the successor corporation (or
parent thereof).

            E. Each option which is assumed in connection with a Corporate
Transaction shall be appropriately adjusted, immediately after such Corporate
Transaction, to apply to the number and class of securities which would have
been issuable to the Optionee in consummation of such Corporate Transaction had
the option been exercised immediately prior to such Corporate Transaction.
Appropriate adjustments shall also be made to (i) the number and class of
securities available for issuance under the Plan following the consummation of
such Corporate Transaction, (ii) the exercise price payable per share under each
outstanding option, provided the aggregate exercise price payable for such
securities shall remain the same and (iii) the maximum number of securities
and/or class of securities for which any one person may be granted stock
options, separately exercisable stock appreciation rights and direct stock
issuances under the Plan per calendar year.

            F. Any options which are assumed or replaced in the Corporate
Transaction and do not otherwise accelerate at that time shall automatically
accelerate (and any of the Corporation's outstanding repurchase rights which do
not otherwise terminate at the time of the


                                       7.
<PAGE>   8

Corporate Transaction shall automatically terminate and the shares of Common
Stock subject to those terminated rights shall immediately vest in full) in the
event the Optionee's Service should subsequently terminate by reason of an
Involuntary Termination within eighteen (18) months following the effective date
of such Corporate Transaction. Any options so accelerated shall remain
exercisable for fully-vested shares until the earlier of (i) the expiration of
the option term or (ii) the expiration of the one (1)-year period measured from
the effective date of the Involuntary Termination.

            G. The Plan Administrator shall have the discretion, exercisable
either at the time the option is granted or at any time while the option remains
outstanding, to (i) provide for the automatic acceleration of one or more
outstanding options (and the automatic termination of one or more outstanding
repurchase rights with the immediate vesting of the shares of Common Stock
subject to those rights) upon the occurrence of a Change in Control or (ii)
condition any such option acceleration (and the termination of any outstanding
repurchase rights) upon the subsequent Involuntary Termination of the Optionee's
Service within a specified period following the effective date of such Change in
Control. Any options accelerated in connection with a Change in Control shall
remain fully exercisable until the expiration or sooner termination of the
option term.

            H. The grant of options under the Discretionary Option Grant Program
shall in no way affect the right of the Corporation to adjust, reclassify,
reorganize or otherwise change its capital or business structure or to merge,
consolidate, dissolve, liquidate or sell or transfer all or any part of its
business or assets.

   III.     CANCELLATION AND REGRANT OF OPTIONS

            The Plan Administrator shall have the authority to effect, at any
time and from time to time, with the consent of the affected option holders, the
cancellation of any or all outstanding options under the Discretionary Option
Grant Program and to grant in substitution new options covering the same or
different number of shares of Common Stock but with an exercise price per share
based on the Fair Market Value per share of Common Stock on the new grant date.

    IV.     STOCK APPRECIATION RIGHTS

            A. The Plan Administrator shall have full power and authority to
grant to selected Optionees tandem stock appreciation rights with the following
terms:

                      (i) One or more Optionees may be granted the right,
      exercisable upon such terms as the Plan Administrator may establish, to
      elect between the exercise of the underlying option for shares of Common
      Stock and the surrender of that option in exchange for a distribution from
      the Corporation in an amount equal to the excess of (a) the Fair Market
      Value (on the option surrender date) of the number of shares in which the
      Optionee is at the time


                                       8.
<PAGE>   9
      vested under the surrendered option (or surrendered portion thereof) over
      (b) the aggregate exercise price payable for such shares.

                      (ii) No such option surrender shall be effective unless it
      is approved by the Plan Administrator. If the surrender is so approved,
      then the distribution to which the Optionee shall be entitled may be made
      in shares of Common Stock valued at Fair Market Value on the option
      surrender date, in cash, or partly in shares and partly in cash, as the
      Plan Administrator shall in its sole discretion deem appropriate.

                      (iii) If the surrender of an option is rejected by the
      Plan Administrator, then the Optionee shall retain whatever rights the
      Optionee had under the surrendered option (or surrendered portion thereof)
      on the option surrender date and may exercise such rights at any time
      prior to the later of (a) five (5) business days after the receipt of the
      rejection notice or (b) the last day on which the option is otherwise
      exercisable in accordance with the terms of the documents evidencing such
      option, but in no event may such rights be exercised more than ten (10)
      years after the option grant date.


                                       9.
<PAGE>   10
                                  ARTICLE THREE

                             STOCK ISSUANCE PROGRAM

     I.     STOCK ISSUANCE TERMS

            Shares of Common Stock may be issued under the Stock Issuance
Program through direct and immediate issuances without any intervening option
grants. Each such stock issuance shall be evidenced by a Stock Issuance
Agreement which complies with the terms specified below.

            A.    Purchase Price.

                  1. The purchase price per share shall be fixed by the Plan
Administrator, but shall not be less than eighty-five percent (85%) of the Fair
Market Value per share of Common Stock on the issuance date.

                  2. Subject to the provisions of Section I of Article Five,
shares of Common Stock may be issued under the Stock Issuance Program for any of
the following items of consideration which the Plan Administrator may deem
appropriate in each individual instance:

                      (i) cash or check made payable to the Corporation, or

                      (ii) past services rendered to the Corporation (or any
      Parent or Subsidiary).

            B.    Vesting Provisions.

                  1. Shares of Common Stock issued under the Stock Issuance
Program may, in the discretion of the Plan Administrator, be fully and
immediately vested upon issuance or may vest in one or more installments over
the Participant's period of Service or upon attainment of specified performance
objectives. The elements of the vesting schedule applicable to any unvested
shares of Common Stock issued under the Stock Issuance Program, namely:

                      (i) the Service period to be completed by the Participant
      or the performance objectives to be attained,

                      (ii) the number of installments in which the shares are to
      vest,

                      (iii) the interval or intervals (if any) which are to
      lapse between installments, and


                                       10.
<PAGE>   11

                      (iv) the effect which death, Permanent Disability or other
      event designated by the Plan Administrator is to have upon the vesting
      schedule,

shall be determined by the Plan Administrator and incorporated into the Stock
Issuance Agreement.

                  2. Any new, substituted or additional securities or other
property (including money paid other than as a regular cash dividend) which the
Participant may have the right to receive with respect to the Participant's
unvested shares of Common Stock by reason of any stock dividend, stock split,
recapitalization, combination of shares, exchange of shares or other change
affecting the outstanding Common Stock as a class without the Corporation's
receipt of consideration shall be issued subject to (i) the same vesting
requirements applicable to the Participant's unvested shares of Common Stock and
(ii) such escrow arrangements as the Plan Administrator shall deem appropriate.

                  3. The Participant shall have full stockholder rights with
respect to any shares of Common Stock issued to the Participant under the Stock
Issuance Program, whether or not the Participant's interest in those shares is
vested. Accordingly, the Participant shall have the right to vote such shares
and to receive any regular cash dividends paid on such shares.

                  4. Should the Participant cease to remain in Service while
holding one or more unvested shares of Common Stock issued under the Stock
Issuance Program or should the performance objectives not be attained with
respect to one or more such unvested shares of Common Stock, then those shares
shall be immediately surrendered to the Corporation for cancellation, and the
Participant shall have no further stockholder rights with respect to those
shares. To the extent the surrendered shares were previously issued to the
Participant for consideration paid in cash or cash equivalent (including the
Participant's purchase-money indebtedness), the Corporation shall repay to the
Participant the cash consideration paid for the surrendered shares and shall
cancel the unpaid principal balance of any outstanding purchase-money note of
the Participant attributable to the surrendered shares.

                  5. The Plan Administrator may in its discretion waive the
surrender and cancellation of one or more unvested shares of Common Stock (or
other assets attributable thereto) which would otherwise occur upon the
cessation of the Participant's Service or the non-attainment of the performance
objectives applicable to those shares. Such waiver shall result in the immediate
vesting of the Participant's interest in the shares of Common Stock as to which
the waiver applies. Such waiver may be effected at any time, whether before or
after the Participant's cessation of Service or the attainment or non-attainment
of the applicable performance objectives.

    II.     CORPORATE TRANSACTION/CHANGE IN CONTROL

            A. All outstanding cancellation rights under the Stock Issuance
Program shall terminate automatically, and all the shares of Common Stock
subject to those terminated rights


                                       11.
<PAGE>   12
shall immediately vest in full, in the event of any Corporate Transaction,
except to the extent (i) those repurchase/cancellation rights are assigned to
the successor corporation (or parent thereof) in connection with such Corporate
Transaction or (ii) such accelerated vesting is precluded by other limitations
imposed in the Stock Issuance Agreement.

            B. Any cancellation rights that are assigned in the Corporate
Transaction shall automatically terminate, and the shares of Common Stock
subject to those terminated rights shall immediately vest in full, in the event
the Participant's Service should subsequently terminate by reason of an
Involuntary Termination within eighteen (18) months following the effective date
of such Corporate Transaction.

            C. The Plan Administrator shall have the discretion to provide for
cancellation rights with terms different from those in effect under this Section
II in connection with a Corporate Transaction.

            D. The Plan Administrator shall have the discretion, exercisable
either at the time the unvested shares are issued or at any time while the
Corporation's cancellation right remains outstanding, to (i) provide for the
automatic termination of one or more outstanding cancellation rights and the
immediate vesting of the shares of Common Stock subject to those rights upon the
occurrence of a Change in Control or (ii) condition any such accelerated vesting
upon the subsequent Involuntary Termination of the Participant's Service within
a specified period following the effective date of such Change in Control.

   III.     SHARE ESCROW/LEGENDS

            Unvested shares may, in the Plan Administrator's discretion, be held
in escrow by the Corporation until the Participant's interest in such shares
vests or may be issued directly to the Participant with restrictive legends on
the certificates evidencing those unvested shares.


                                       12.
<PAGE>   13
                                  ARTICLE FOUR

                                  MISCELLANEOUS

     I.     FINANCING

            A. The Plan Administrator may permit any Optionee or Participant to
pay the option exercise price under the Discretionary Option Grant Program or
the purchase price for shares issued under the Stock Issuance Program by
delivering a promissory note payable in one or more installments. The terms of
any such promissory note (including the interest rate and the terms of
repayment) shall be established by the Plan Administrator in its sole
discretion. Promissory notes may be authorized with or without security or
collateral. In all events, the maximum credit available to the Optionee or
Participant may not exceed the sum of (i) the aggregate option exercise price or
purchase price payable for the purchased shares plus (ii) any Federal, state and
local income and employment tax liability incurred by the Optionee or the
Participant in connection with the option exercise or share purchase.

            B. The Plan Administrator may, in its discretion, determine that one
or more such promissory notes shall be subject to forgiveness by the Corporation
in whole or in part upon such terms as the Plan Administrator may deem
appropriate.

    II.     TAX WITHHOLDING

            A. The Corporation's obligation to deliver shares of Common Stock
upon the exercise of options or stock appreciation rights or upon the issuance
or vesting of such shares under the Plan shall be subject to the satisfaction of
all applicable Federal, state and local income and employment tax withholding
requirements.

            B. The Plan Administrator may, in its discretion, provide any or all
holders of Non-Statutory Options or unvested shares of Common Stock under the
Plan (other than the options granted or the shares issued under the Automatic
Option Grant Program) with the right to use shares of Common Stock in
satisfaction of all or part of the Taxes incurred by such holders in connection
with the exercise of their options or the vesting of their shares. Such right
may be provided to any such holder in either or both of the following formats:

                      (i) Stock Withholding: The election to have the
      Corporation withhold, from the shares of Common Stock otherwise issuable
      upon the exercise of such Non-Statutory Option or the vesting of such
      shares, a portion of those shares with an aggregate Fair Market Value
      equal to the percentage of the Taxes (not to exceed one hundred percent
      (100%)) designated by the holder.


                                       13.
<PAGE>   14
                      (ii) Stock Delivery: The election to deliver to the
      Corporation, at the time the Non-Statutory Option is exercised or the
      shares vest, one or more shares of Common Stock previously acquired by
      such holder (other than in connection with the option exercise or share
      vesting triggering the Taxes) with an aggregate Fair Market Value equal to
      the percentage of the Taxes (not to exceed one hundred percent (100%))
      designated by the holder.

   III.     EFFECTIVE DATE AND TERM OF THE PLAN

            A. The Plan shall become effective upon its adoption by the Board.

            B. The Plan shall terminate upon the earliest of (i) ten (10) years
from the date of adoption of the Plan by the Board, (ii) the date on which all
shares available for issuance under the Plan shall have been issued as
fully-vested shares pursuant to the exercise of the options or the issuance of
shares under the Plan or (iii) the termination of all outstanding options in
connection with a Corporate Transaction. Upon such Plan termination, all
outstanding options and unvested stock issuances shall continue to have force
and effect in accordance with the provisions of the documents evidencing such
options or issuances.

    IV.     AMENDMENT OF THE PLAN

            The Board shall have complete and exclusive power and authority to
amend or modify the Plan in any or all respects. However, no such amendment or
modification shall adversely affect any rights and obligations with respect to
options, stock appreciation rights or unvested stock issuances at the time
outstanding under the Plan unless the Optionee or the Participant consents to
such amendment or modification.

     V.     USE OF PROCEEDS

            Any cash proceeds received by the Corporation from the sale of
shares of Common Stock under the Plan shall be used for general corporate
purposes.

    VI.     REGULATORY APPROVALS

            A. The implementation of the Plan, the granting of any option or
stock appreciation right under the Plan and the issuance of any shares of Common
Stock (i) upon the exercise of any option or stock appreciation right or (ii)
under the Stock Issuance Program shall be subject to the Corporation's
procurement of all approvals and permits required by regulatory authorities
having jurisdiction over the Plan, the options and stock appreciation rights
granted under it and the shares of Common Stock issued pursuant to it.

            B. No shares of Common Stock or other assets shall be issued or
delivered under the Plan unless and until there shall have been compliance with
all applicable requirements of Federal and state securities laws, including the
filing and effectiveness of the Form S-8


                                       14.
<PAGE>   15
registration statement for the shares of Common Stock issuable under the Plan,
and all applicable listing requirements of any stock exchange (or the Nasdaq
National Market, if applicable) on which Common Stock is then listed for
trading.

   VII.     NO EMPLOYMENT/SERVICE RIGHTS

            Nothing in the Plan shall confer upon the Optionee or the
Participant any right to continue in Service for any period of specific duration
or interfere with or otherwise restrict in any way the rights of the Corporation
(or any Parent or Subsidiary employing or retaining such person) or of the
Optionee or the Participant, which rights are hereby expressly reserved by each,
to terminate such person's Service at any time for any reason, with or without
cause.


                                     15.
<PAGE>   16
                                    APPENDIX

            The following definitions shall be in effect under the Plan:

      A. BOARD shall mean the Corporation's Board of Directors.

      B. CHANGE IN CONTROL shall mean a change in ownership or control of the
Corporation effected through either of the following transactions:

               (i) the acquisition, directly or indirectly, by any person or
      related group of persons (other than the Corporation or a person that
      directly or indirectly controls, is controlled by, or is under common
      control with, the Corporation), of beneficial ownership (within the
      meaning of Rule 13d-3 of the 1934 Act) of securities possessing more than
      fifty percent (50%) of the total combined voting power of the
      Corporation's outstanding securities pursuant to a tender or exchange
      offer made directly to the Corporation's stockholders which the Board does
      not recommend such stockholders to accept, or

               (ii) a change in the composition of the Board over a period of
      thirty-six (36) consecutive months or less such that a majority of the
      Board members ceases, by reason of one or more contested elections for
      Board membership, to be comprised of individuals who either (A) have been
      Board members continuously since the beginning of such period or (B) have
      been elected or nominated for election as Board members during such period
      by at least a majority of the Board members described in clause (A) who
      were still in office at the time the Board approved such election or
      nomination.

      C. CODE shall mean the Internal Revenue Code of 1986, as amended.

      D. COMMON STOCK shall mean the Corporation's common stock.

      E. CORPORATE TRANSACTION shall mean either of the following
stockholder-approved transactions to which the Corporation is a party:

               (i) a merger or consolidation in which securities possessing more
      than fifty percent (50%) of the total combined voting power of the
      Corporation's outstanding securities are transferred to a person or
      persons different from the persons holding those securities immediately
      prior to such transaction; or


                                      A-1.
<PAGE>   17
               (ii) the sale, transfer or other disposition of all or
      substantially all of the Corporation's assets in complete liquidation or
      dissolution of the Corporation.

      F. CORPORATION shall mean Onyx Acceptance Corporation, a Delaware
corporation, and any corporate successor to all or substantially all of the
assets or voting stock of Onyx Acceptance Corporation which shall by appropriate
action adopt the Plan.

      G. DISCRETIONARY OPTION GRANT PROGRAM shall mean the discretionary option
grant program in effect under the Plan.

      H. DOMESTIC RELATIONS ORDER shall mean any judgment, decree or order
(including approval of a property settlement agreement) which provides or
otherwise conveys, pursuant to applicable State domestic relations laws
(including community property laws), marital property rights to any spouse or
former spouse of the Optionee.

      I. EMPLOYEE shall mean an individual who is in the employ of the
Corporation (or any Parent or Subsidiary), subject to the control and direction
of the employer entity as to both the work to be performed and the manner and
method of performance.

      J. EXERCISE DATE shall mean the date on which the Corporation shall have
received written notice of the option exercise.

      K. FAIR MARKET VALUE per share of Common Stock on any relevant date shall
be determined in accordance with the following provisions:

               (i) If the Common Stock is at the time traded on the Nasdaq
      National Market, then the Fair Market Value shall be the closing selling
      price per share of Common Stock on the date in question, as such price is
      reported by the National Association of Securities Dealers on the Nasdaq
      National Market or any successor system. If there is no closing selling
      price for the Common Stock on the date in question, then the Fair Market
      Value shall be the closing selling price on the last preceding date for
      which such quotation exists.

               (ii) If the Common Stock is at the time listed on any Stock
      Exchange, then the Fair Market Value shall be the closing selling price
      per share of Common Stock on the date in question on the Stock Exchange
      determined by the Plan Administrator to be the primary market for the
      Common Stock, as such price is officially quoted in the composite tape of
      transactions on such exchange. If there is no closing selling price for
      the Common Stock on the date in question, then the Fair Market Value shall
      be the closing selling price on the last preceding date for which such
      quotation exists.


                                      A-2.
<PAGE>   18

      L. INVOLUNTARY TERMINATION shall mean the termination of the Service of
any individual which occurs by reason of:

               (i) such individual's involuntary dismissal or discharge by the
      Corporation for reasons other than Misconduct, or

               (ii) such individual's voluntary resignation following (A) a
      change in his or her position with the Corporation which materially
      reduces his or her level of responsibility, (B) a reduction in his or her
      level of compensation (including base salary, fringe benefits and
      participation in corporate-performance based bonus or incentive programs)
      by more than fifteen percent (15%) or (C) a relocation of such
      individual's place of employment by more than fifty (50) miles, provided
      and only if such change, reduction or relocation is effected by the
      Corporation without the individual's consent.

      M. MISCONDUCT shall mean the commission of any act of fraud, embezzlement
or dishonesty by the Optionee or Participant, any unauthorized use or disclosure
by such person of confidential information or trade secrets of the Corporation
(or any Parent or Subsidiary), or any other intentional misconduct by such
person adversely affecting the business or affairs of the Corporation (or any
Parent or Subsidiary) in a material manner. The foregoing definition shall not
be deemed to be inclusive of all the acts or omissions which the Corporation (or
any Parent or Subsidiary) may consider as grounds for the dismissal or discharge
of any Optionee, Participant or other person in the Service of the Corporation
(or any Parent or Subsidiary).

      N. 1934 ACT shall mean the Securities Exchange Act of 1934, as amended.

      O. NON-STATUTORY OPTION shall mean an option not intended to satisfy the
requirements of Code Section 422.

      P. OPTIONEE shall mean any person to whom an option is granted under the
Discretionary Option Grant or Automatic Option Grant Program.

      Q. PARENT shall mean any corporation (other than the Corporation) in an
unbroken chain of corporations ending with the Corporation, provided each
corporation in the unbroken chain (other than the Corporation) owns, at the time
of the determination, stock possessing fifty percent (50%) or more of the total
combined voting power of all classes of stock in one of the other corporations
in such chain.

      R. PARTICIPANT shall mean any person who is issued shares of Common Stock
under the Stock Issuance Program.

      S. PERMANENT DISABILITY shall mean the inability of the Optionee or the
Participant to engage in any substantial gainful activity by reason of any
medically determinable physical


                                      A-3.
<PAGE>   19
or mental impairment expected to result in death or to be of continuous duration
of twelve (12) months or more.

      T. PLAN shall mean the Corporation's 1998 Non-Officer Stock Option/Stock
Issuance Plan, as set forth in this document.

      U. PLAN ADMINISTRATOR shall mean the particular entity, whether the
Committee or the Board, which is authorized to administer the Plan.

      V. COMMITTEE shall mean the committee of one (1) or more Board members
appointed by the Board to administer the Plan.

      W. QUALIFIED DOMESTIC RELATIONS ORDER shall mean a Domestic Relations
Order which substantially complies with the requirements of Code Section 414(p).
The Plan Administrator shall have the sole discretion to determine whether a
Domestic Relations Order is a Qualified Domestic Relations Order.

      X. SERVICE shall mean the provision of services to the Corporation (or any
Parent or Subsidiary) by a person in the capacity of an Employee, a non-employee
member of the board of directors or a consultant or independent advisor, except
to the extent otherwise specifically provided in the documents evidencing the
option grant or stock issuance.

      Y. STOCK EXCHANGE shall mean either the American Stock Exchange or the New
York Stock Exchange.

      Z. STOCK ISSUANCE AGREEMENT shall mean the agreement entered into by the
Corporation and the Participant at the time of issuance of shares of Common
Stock under the Stock Issuance Program.

      AA. STOCK ISSUANCE PROGRAM shall mean the stock issuance program in effect
under the Plan.

      AB. SUBSIDIARY shall mean any corporation (other than the Corporation) in
an unbroken chain of corporations beginning with the Corporation, provided each
corporation (other than the last corporation) in the unbroken chain owns, at the
time of the determination, stock possessing fifty percent (50%) or more of the
total combined voting power of all classes of stock in one of the other
corporations in such chain.

      AC. TAXES shall mean the Federal, state and local income and employment
tax liabilities incurred by the holder of Non-Statutory Options or unvested
shares of Common Stock in connection with the exercise of those options or the
vesting of those shares.


                                      A-4.

<PAGE>   1
                                                                   EXHIBIT 99.14


                           ONYX ACCEPTANCE CORPORATION
                             STOCK OPTION AGREEMENT

RECITALS

            I. The Board has adopted the Plan for the purpose of retaining the
services of selected Employees, non-employee members of the Board or the board
of directors of any Parent or Subsidiary and consultants and other independent
advisors who provide services to the Corporation (or any Parent or Subsidiary).

            A. Optionee is to render valuable services to the Corporation (or a
Parent or Subsidiary), and this Agreement is executed pursuant to, and is
intended to carry out the purposes of, the Plan in connection with the
Corporation's grant of an option to Optionee.

            B. All capitalized terms in this Agreement shall have the meaning
assigned to them in the attached Appendix.

            NOW, THEREFORE, it is hereby agreed as follows:

            1. GRANT OF OPTION. The Corporation hereby grants to Optionee, as of
the Grant Date, an option to purchase up to the number of Option Shares
specified in the Grant Notice. The Option Shares shall be purchasable from time
to time during the option term specified in Paragraph 2 at the Exercise Price.

            2. OPTION TERM. This option shall have a term of ten (10) years
measured from the Grant Date and shall accordingly expire at the close of
business on the Expiration Date, unless sooner terminated in accordance with
Paragraph 5 or 6.

            3. LIMITED TRANSFERABILITY. This option shall be neither
transferable nor assignable by Optionee other than by will or by the laws of
descent and distribution following Optionee's death and may be exercised, during
Optionee's lifetime, only by Optionee. However, if this option is designated a
Non-Statutory Option in the Grant Notice, then this option may, in connection
with the Optionee's estate plan, be assigned in whole or in part during
Optionee's lifetime to one or more members of the Optionee's immediate family or
to a trust established for the exclusive benefit of one or more such family
members. The assigned portion shall be exercisable only by the person or persons
who acquire a proprietary interest in the option pursuant to such assignment.
The terms applicable to the assigned portion shall be the same as those in
effect for this option immediately prior to such assignment and shall be set
forth in such documents issued to the assignee as the Plan Administrator may
deem appropriate.

            4. DATES OF EXERCISE. This option shall become exercisable for the
Option Shares in one or more installments as specified in the Grant Notice. As
the option becomes exercisable for such installments, those installments shall
accumulate and the option shall remain exercisable for the accumulated
installments until the Expiration Date or sooner termination of the option term
under Paragraph 5 or 6.

<PAGE>   2

            5. CESSATION OF SERVICE. The option term specified in Paragraph 2
shall terminate (and this option shall cease to be outstanding) prior to the
Expiration Date should any of the following provisions become applicable:

                   (i) Should Optionee cease to remain in Service for any reason
      (other than death, Permanent Disability or Misconduct) while this option
      is outstanding, then Optionee shall have a period of three (3) months
      (commencing with the date of such cessation of Service) during which to
      exercise this option, but in no event shall this option be exercisable at
      any time after the Expiration Date.

                   (ii) Should Optionee die while this option is outstanding,
      then the personal representative of Optionee's estate or the person or
      persons to whom the option is transferred pursuant to Optionee's will or
      in accordance with the laws of descent and distribution shall have the
      right to exercise this option. Such right shall lapse and this option
      shall cease to be outstanding upon the earlier of (A) the expiration of
      the twelve (12)-month period measured from the date of Optionee's death
      or (B) the Expiration Date.

                   (iii) Should Optionee cease Service by reason of Permanent
      Disability while this option is outstanding, then Optionee shall have a
      period of twelve (12) months (commencing with the date of such cessation
      of Service) during which to exercise this option. In no event shall this
      option be exercisable at any time after the Expiration Date.

                   (iv) During the limited period of post-Service
      exercisability, this option may not be exercised in the aggregate for more
      than the number of vested Option Shares for which the option is
      exercisable at the time of Optionee's cessation of Service. Upon the
      expiration of such limited exercise period or (if earlier) upon the
      Expiration Date, this option shall terminate and cease to be outstanding
      for any vested Option Shares for which the option has not been exercised.
      To the extent Optionee is not vested in the Option Shares at the time of
      Optionee's cessation of Service, this option shall immediately terminate
      and cease to be outstanding with respect to those shares.

                   (v) Should Optionee's Service be terminated for Misconduct,
      then this option shall terminate immediately and cease to remain
      outstanding.

                   (vi) In the event of a Corporate Transaction, the provisions
      of Paragraph 6 shall govern the period for which this option is to remain
      exercisable following Optionee's cessation of Service and shall supersede
      any provisions to the contrary in this paragraph.

            6.    SPECIAL ACCELERATION OF OPTION.

                  (a) In the event of a Corporate Transaction, the
exercisability of this option, to the extent outstanding at such time but not
otherwise fully exercisable, shall 

<PAGE>   3
automatically accelerate so that this option shall, immediately prior to the
effective date of the Corporate Transaction, become exercisable for any or all
of the Option Shares at the time subject to this option as fully-vested shares
of Common Stock. No such acceleration of this option, however, shall occur if
and to the extent: (i) this option is, in connection with the Corporate
Transaction, either to be assumed by the successor corporation (or parent
thereof) or to be replaced with a comparable option to purchase shares of the
capital stock of the successor corporation (or parent thereof) or (ii) this
option is to be replaced with a cash incentive program of the successor
corporation which preserves the spread existing on the Option Shares for which
this option is not exercisable at the time of the Corporate Transaction (the
excess of the Fair Market Value of such Option Shares over the aggregate
Exercise Price payable for such shares) and provides for subsequent pay-out in
accordance with the same exercise schedule in effect for the option pursuant to
the option exercise schedule set forth in the Grant Notice. The determination of
option comparability under clause (i) shall be made by the Plan Administrator,
and such determination shall be final, binding and conclusive.

                  (b) Immediately following the Corporate Transaction, this
option, to the extent not previously exercised, shall terminate and cease to be
outstanding, except to the extent assumed by the successor corporation (or
parent thereof) in connection with the Corporate Transaction.

                  (c) If this option is assumed in connection with a Corporate
Transaction, then this option shall be appropriately adjusted, immediately after
such Corporate Transaction, to apply to the number and class of securities which
would have been issuable to Optionee in consummation of such Corporate
Transaction had the option been exercised immediately prior to such Corporate
Transaction, and appropriate adjustments shall also be made to the Exercise
Price, provided the aggregate Exercise Price shall remain the same.

                  (d) Upon an Involuntary Termination of Optionee's Service
within eighteen (18) months following a Corporate Transaction in which this
option is assumed or replaced, the exercisability of this option, to the extent
outstanding at such time but not otherwise fully exercisable, shall
automatically accelerate so that this option shall immediately become fully
exercisable for all the Option Shares at the time subject to this option as
fully-vested shares of Common Stock and may be exercised for any or all of those
shares at any time prior to the earlier of (i) the Expiration Date or (ii) the
expiration of the one (1)-year period measured from the effective date of the
Involuntary Termination.

                  (e) This Agreement shall not in any way affect the right of
the Corporation to adjust, reclassify, reorganize or otherwise change its
capital or business structure or to merge, consolidate, dissolve, liquidate or
sell or transfer all or any part of its business or assets.

            7. ADJUSTMENT IN OPTION SHARES. Should any change be made to the
Common Stock by reason of any stock split, stock dividend, recapitalization,
combination of shares, exchange of shares or other change affecting the
outstanding Common Stock as a class without the Corporation's receipt of
consideration, appropriate adjustments shall be made to (i) the total number
and/or class of securities subject to this option and (ii) the Exercise Price in

<PAGE>   4
order to reflect such change and thereby preclude a dilution or enlargement of
benefits hereunder.

            8. STOCKHOLDER RIGHTS. The holder of this option shall not have any
stockholder rights with respect to the Option Shares until such person shall
have exercised the option, paid the Exercise Price and become a holder of record
of the purchased shares.

            9. MANNER OF EXERCISING OPTION.

                  (a) In order to exercise this option with respect to all or
any part of the Option Shares for which this option is at the time exercisable,
Optionee (or any other person or persons exercising the option) must take the
following actions:

                   (i) Execute and deliver to the Corporation a Notice of
      Exercise for the Option Shares for which the option is exercised.

                   (ii) Pay the aggregate Exercise Price for the purchased
      shares in one or more of the following forms:

                              (A) cash or check made payable to the Corporation;

                              (B) a promissory note payable to the Corporation,
            but only to the extent authorized by the Plan Administrator in
            accordance with Paragraph 13;

                              (C) shares of Common Stock held by Optionee (or
            any other person or persons exercising the option) for the requisite
            period necessary to avoid a charge to the Corporation's earnings for
            financial reporting purposes and valued at Fair Market Value on the
            Exercise Date; or

                              (D) through a special sale and remittance
            procedure pursuant to which Optionee (or any other person or persons
            exercising the option) shall concurrently provide irrevocable
            written instructions (I) to a Corporation-designated brokerage firm
            to effect the immediate sale of the purchased shares and remit to
            the Corporation, out of the sale proceeds available on the
            settlement date, sufficient funds to cover the aggregate Exercise
            Price payable for the purchased shares plus all applicable Federal,
            state and local income and employment taxes required to be withheld
            by the Corporation by reason of such exercise and (II) to the
            Corporation to deliver the certificates for the purchased shares
            directly to such brokerage firm in order to complete the sale.

                  Except to the extent the sale and remittance procedure is
            utilized in connection with the option exercise, payment of the
            Exercise Price must accompany the Notice of Exercise delivered to
            the Corporation in connection with the option exercise.

<PAGE>   5

                         (iii) Furnish to the Corporation appropriate
      documentation that the person or persons exercising the option (if other
      than Optionee) have the right to exercise this option.

                         (iv) Make appropriate arrangements with the Corporation
      (or Parent or Subsidiary employing or retaining Optionee) for the
      satisfaction of all Federal, state and local income and employment tax
      withholding requirements applicable to the option exercise.

                  (b) As soon as practical after the Exercise Date, the
Corporation shall issue to or on behalf of Optionee (or any other person or
persons exercising this option) a certificate for the purchased Option Shares,
with the appropriate legends affixed thereto.

                  (c) In no event may this option be exercised for any
fractional shares.

            10. COMPLIANCE WITH LAWS AND REGULATIONS.

                  (a) The exercise of this option and the issuance of the Option
Shares upon such exercise shall be subject to compliance by the Corporation and
Optionee with all applicable requirements of law relating thereto and with all
applicable regulations of any stock exchange (or the Nasdaq National Market, if
applicable) on which the Common Stock may be listed for trading at the time of
such exercise and issuance.

                  (b) The inability of the Corporation to obtain approval from
any regulatory body having authority deemed by the Corporation to be necessary
to the lawful issuance and sale of any Common Stock pursuant to this option
shall relieve the Corporation of any liability with respect to the non-issuance
or sale of the Common Stock as to which such approval shall not have been
obtained. The Corporation, however, shall use its best efforts to obtain all
such approvals.

            11. SUCCESSORS AND ASSIGNS. Except to the extent otherwise provided
in Paragraphs 3 and 6, the provisions of this Agreement shall inure to the
benefit of, and be binding upon, the Corporation and its successors and assigns
and Optionee, Optionee's assigns and the legal representatives, heirs and
legatees of Optionee's estate.

            12. NOTICES. Any notice required to be given or delivered to the
Corporation under the terms of this Agreement shall be in writing and addressed
to the Corporation at its principal corporate offices. Any notice required to be
given or delivered to Optionee shall be in writing and addressed to Optionee at
the address indicated below Optionee's signature line on the Grant Notice. All
notices shall be deemed effective upon personal delivery or upon deposit in the
U.S. mail, postage prepaid and properly addressed to the party to be notified.

            13. FINANCING. The Plan Administrator may, in its absolute
discretion and without any obligation to do so, permit Optionee to pay the
Exercise Price for the purchased Option Shares by delivering a promissory note.
The terms of any such promissory note

<PAGE>   6

(including the interest rate, the requirements for collateral and the terms of
repayment) shall be established by the Plan Administrator in its sole
discretion.(1)

            14. CONSTRUCTION. This Agreement and the option evidenced hereby are
made and granted pursuant to the Plan and are in all respects limited by and
subject to the terms of the Plan. All decisions of the Plan Administrator with
respect to any question or issue arising under the Plan or this Agreement shall
be conclusive and binding on all persons having an interest in this option.

            15. GOVERNING LAW. The interpretation, performance and enforcement
of this Agreement shall be governed by the laws of the State of California
without resort to that State's conflict-of-laws rules.

            16. EXCESS SHARES. If the Option Shares covered by this Agreement
exceed, as of the Grant Date, the number of shares of Common Stock which may
without stockholder approval be issued under the Plan, then this option shall be
void with respect to such excess shares, unless stockholder approval of an
amendment sufficiently increasing the number of shares of Common Stock issuable
under the Plan is obtained in accordance with the provisions of the Plan.

            17. ADDITIONAL TERMS APPLICABLE TO AN INCENTIVE OPTION. In the event
this option is designated an Incentive Option in the Grant Notice, the following
terms and conditions shall also apply to the grant:

                   (i) This option shall cease to qualify for favorable tax
      treatment as an Incentive Option if (and to the extent) this option is
      exercised for one or more Option Shares: (A) more than three (3) months
      after the date Optionee ceases to be an Employee for any reason other than
      death or Permanent Disability or (B) more than twelve (12) months after
      the date Optionee ceases to be an Employee by reason of Permanent
      Disability.

                   (ii) No installment under this option shall qualify for
      favorable tax treatment as an Incentive Option if (and to the extent) the
      aggregate Fair Market Value (determined at the Grant Date) of the Common
      Stock for which such installment first becomes exercisable hereunder
      would, when added to the aggregate value (determined as of the respective
      date or dates of grant) of any earlier installments of the Common Stock
      and any other securities for which this option or any other Incentive
      Options granted to Optionee prior to the Grant Date (whether under the
      Plan or any other option plan of the Corporation or any Parent or
      Subsidiary) first become exercisable during the same calendar year, exceed
      One Hundred Thousand Dollars ($100,000) in the aggregate. Should such One
      Hundred Thousand Dollar ($100,000) limitation be exceeded in any calendar
      year, this option shall nevertheless become exercisable for the excess
      shares in such calendar year as a Non-Statutory Option.

                   (iii) Should the exercisability of this option be accelerated
      upon a Corporate Transaction, then this option shall qualify for favorable
      tax treatment as an Incentive Option only to the extent the aggregate Fair
      Market Value (determined at the Grant Date) of the Common Stock for which
      this option first becomes exercisable in the calendar year in which the
      Corporate Transaction occurs does not, when added to the aggregate value
      (determined as of the respective date or dates of grant) of the Common
      Stock or other securities for which this option or one or more other
      Incentive Options granted to Optionee prior to the Grant Date (whether
      under the Plan or any other option plan of the Corporation or any Parent
      or Subsidiary) first become exercisable during the same calendar year,
      exceed One Hundred Thousand Dollars ($100,000) in the aggregate. Should
      the applicable One Hundred Thousand Dollar ($100,000) limitation be
      exceeded in the calendar year of such Corporate Transaction, the option
      may nevertheless be exercised for the excess shares in such calendar year
      as a Non-Statutory Option.

- --------

(1)   Authorization of payment of the Exercise Price by a promissory note may,
      under currently proposed Treasury Regulations, result in the loss of
      incentive stock option treatment under the Federal tax laws.
<PAGE>   7

                   (iv) Should Optionee hold, in addition to this option, one or
      more other options to purchase Common Stock which become exercisable for
      the first time in the same calendar year as this option, then the
      foregoing limitations on the exercisability of such options as Incentive
      Options shall be applied on the basis of the order in which such options
      are granted.
<PAGE>   8
                                    EXHIBIT I

                               NOTICE OF EXERCISE

            I hereby notify Onyx Acceptance Corporation (the "Corporation") that
I elect to purchase ________ shares of the Corporation's Common Stock (the
"Purchased Shares") at the option exercise price of $________ per share (the
"Exercise Price") pursuant to that certain option (the "Option") granted to me
under the Corporation's 1996 Stock Option/Stock Issuance Plan on ________, 199_.

            Concurrently with the delivery of this Exercise Notice to the
Corporation, I shall hereby pay to the Corporation the Exercise Price for the
Purchased Shares in accordance with the provisions of my agreement with the
Corporation (or other documents) evidencing the Option and shall deliver
whatever additional documents may be required by such agreement as a condition
for exercise. Alternatively, I may utilize the special broker-dealer sale and
remittance procedure specified in my agreement to effect payment of the Exercise
Price.

                        , 199  
- ------------------------     --
Date

- --------------------------------------------------------------------------------
                                    Optionee

                                                                        Address:
- --------------------------------------------------------------------------------


Print name in exact manner
it is to appear on the
stock certificate:
- --------------------------------------------------------------------------------

Address to which certificate
is to be sent, if different
from address above:
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

Social Security Number:
- --------------------------------------------------------------------------------

Employee Number:
- --------------------------------------------------------------------------------

<PAGE>   9
                                    APPENDIX


            The following definitions shall be in effect under the Agreement:

            A. AGREEMENT shall mean this Stock Option Agreement.

            B. BOARD shall mean the Corporation's Board of Directors.

            C. CODE shall mean the Internal Revenue Code of 1986, as amended.

            D. COMMON STOCK shall mean the Corporation's common stock.

            E. CORPORATE TRANSACTION shall mean either of the following
stockholder-approved transactions to which the Corporation is a party:

            (i) a merger or consolidation in which securities possessing more
            than fifty percent (50%) of the total combined voting power of the
            Corporation's outstanding securities are transferred to a person or
            persons different from the persons holding those securities
            immediately prior to such transaction, or

            (ii) the sale, transfer or other disposition of all or substantially
            all of the Corporation's assets in complete liquidation or
            dissolution of the Corporation.

            F. CORPORATION shall mean Onyx Acceptance Corporation, a Delaware
corporation.

            G. EMPLOYEE shall mean an individual who is in the employ of the
Corporation (or any Parent or Subsidiary), subject to the control and direction
of the employer entity as to both the work to be performed and the manner and
method of performance.

            H. EXERCISE DATE shall mean the date on which the option shall have
been exercised in accordance with Paragraph 9 of the Agreement.

            I. EXERCISE PRICE shall mean the exercise price per share as
specified in the Grant Notice.

            J. EXPIRATION DATE shall mean the date on which the option expires
as specified in the Grant Notice.

            K. FAIR MARKET VALUE per share of Common Stock on any relevant date
shall be determined in accordance with the following provisions:

            (i) If the Common Stock is at the time traded on the Nasdaq National
            Market, then the Fair Market Value shall be the closing selling
            price per share of Common Stock on the date in question, as the
            price is reported by the National Association of Securities Dealers
            on the Nasdaq National Market or any successor system. If there is
            no closing selling price for the Common Stock on the date in
            question, then the Fair Market Value shall be the closing selling
            price on the last preceding date for which such quotation exists.

            (ii) If the Common Stock is at the time listed on any Stock
            Exchange, then the Fair Market Value shall be the closing selling
            price per share of Common Stock on the date in question on the 

<PAGE>   10
            Stock Exchange determined by the Plan Administrator to be the
            primary market for the Common Stock, as such price is officially
            quoted in the composite tape of transactions on such exchange. If
            there is no closing selling price for the Common Stock on the date
            in question, then the Fair Market Value shall be the closing selling
            price on the last preceding date for which such quotation exists.

            L. GRANT DATE shall mean the date of grant of the option as
specified in the Grant Notice.

            M. GRANT NOTICE shall mean the Notice of Grant of Stock Option
accompanying the Agreement, pursuant to which Optionee has been informed of the
basic terms of the option evidenced hereby.

            N. INCENTIVE OPTION shall mean an option which satisfies the
requirements of Code Section 422.

            O. INVOLUNTARY TERMINATION shall mean the termination of Optionee's
Service which occurs by reason of:

            (i) Optionee's involuntary dismissal or discharge by the Corporation
            for reasons other than Misconduct, or

            (ii) Optionee's voluntary resignation following (A) a change in
            Optionee's position with the Corporation (or Parent or Subsidiary
            employing Optionee) which materially reduces Optionee's level of
            responsibility, (B) a reduction in Optionee's level of compensation
            (including base salary, fringe benefits and participation in
            corporate-performance based bonus or incentive programs) by more
            than fifteen percent (15%) or (C) a relocation of Optionee's place
            of employment by more than fifty (50) miles, provided and only if
            such change, reduction or relocation is effected by the Corporation
            without Optionee's consent.

            P. MISCONDUCT shall mean the commission of any act of fraud,
embezzlement or dishonesty by Optionee, any unauthorized use or disclosure by
Optionee of confidential information or trade secrets of the Corporation (or any
Parent or Subsidiary), or any other intentional misconduct by Optionee adversely
affecting the business or affairs of the Corporation (or any Parent or
Subsidiary) in a material manner. The foregoing definition shall not be deemed
to be inclusive of all the acts or omissions which the Corporation (or any
Parent or Subsidiary) may consider as grounds for the dismissal or discharge of
Optionee or any other individual in the Service of the Corporation (or any
Parent or Subsidiary).

            Q. NON-STATUTORY OPTION shall mean an option not intended to satisfy
the requirements of Code Section 422.

            R. NOTICE OF EXERCISE shall mean the notice of exercise in the form
attached hereto as Exhibit I.

            S. OPTION SHARES shall mean the number of shares of Common Stock
subject to the option as specified in the Grant Notice.

            T. OPTIONEE shall mean the person to whom the option is granted as
specified in the Grant Notice.

            U. PARENT shall mean any corporation (other than the Corporation) in
an unbroken chain of corporations ending with the Corporation, provided each
corporation in the unbroken chain (other than the Corporation) owns, at the time
of the determination, stock possessing fifty percent (50%) or more of the total
combined voting power of all classes of stock in one of the other corporations
in such chain.

            V. PERMANENT DISABILITY shall mean the inability of Optionee to
engage in any substantial gainful activity by reason of any medically
determinable physical or mental impairment which is expected to result in death
or has lasted or can be expected to last for a continuous period of twelve (12)
months or more.
<PAGE>   11

            W. PLAN shall mean the Corporation's 1996 Stock Option/Stock
Issuance Plan.

            X. PLAN ADMINISTRATOR shall mean either the Board or a committee of
Board members, to the extent the committee is at the time responsible for the
administration of the Plan.

            Y. SERVICE shall mean the Optionee's performance of services for the
Corporation (or any Parent or Subsidiary) in the capacity of an Employee, a
non-employee member of the board of directors or a consultant or independent
advisor.

            Z. STOCK EXCHANGE shall mean the American Stock Exchange or the New
York Stock Exchange.

            AA. SUBSIDIARY shall mean any corporation (other than the
Corporation) in an unbroken chain of corporations beginning with the
Corporation, provided each corporation (other than the last corporation) in the
unbroken chain owns, at the time of the determination, stock possessing fifty
percent (50%) or more of the total combined voting power of all classes of stock
in one of the other corporations in such chain.

<PAGE>   1
EXHIBIT 99.15


                          ONYX ACCEPTANCE CORPORATION
                        NOTICE OF GRANT OF STOCK OPTION

            Notice is hereby given of the following option grant (the "Option")
to purchase shares of the Common Stock of Onyx Acceptance Corporation (the
"Corporation"):

            Optionee:
                      ----------------------------------------------------------
            Grant Date:
                        --------------------------------------------------------

            Vesting Commencement Date:
                                       -----------------------------------------

            Exercise Price:  $                                         per share
                              ----------------------------------------

            Number of Option Shares:                                      shares
                                     ------------------------------------

            Expiration Date:
                             ---------------------------------------------------

            Type of Option:  Non-Statutory Stock Option

            Exercise Schedule: The Option shall become exercisable with respect
            to (i) twenty-five percent (25%) of the Option Shares upon
            Optionee's completion of one (1) year of Service measured from the
            Vesting Commencement Date and (ii) the balance of the Option Shares
            in successive equal monthly installments upon Optionee's completion
            of each of the next thirty-six (36) months of Service measured from
            and after the first anniversary of the Vesting Commencement Date. In
            no event shall the Option become exercisable for any additional
            Option Shares after Optionee's cessation of Service.

            Optionee understands and agrees that the Option is granted subject
to and in accordance with the terms of the Onyx Acceptance Corporation 1998
Non-Officer Stock Option/Stock Issuance Plan (the "Plan"). Optionee further
agrees to be bound by the terms of the Plan and the terms of the Option as set
forth in the Stock Option Agreement attached hereto as Exhibit A.

            Optionee hereby acknowledges receipt of a copy of the official
prospectus for the Plan in the form attached hereto as Exhibit B. A copy of the
Plan is available upon request made to the Corporate Secretary at the
Corporation's principal offices.
<PAGE>   2

            No Employment or Service Contract. Nothing in this Notice or in the
attached Stock Option Agreement or Plan shall confer upon Optionee any right to
continue in Service for any period of specific duration or interfere with or
otherwise restrict in any way the rights of the Corporation (or any Parent or
Subsidiary employing or retaining Optionee) or of Optionee, which rights are
hereby expressly reserved by each, to terminate Optionee's Service at any time
for any reason, with or without cause.

            Definitions. All capitalized terms in this Notice shall have the
meaning assigned to them in this Notice or in the attached Stock Option
Agreement.

                        , 199  
- ------------------------     --
         Date

                                          ONYX ACCEPTANCE CORPORATION

                                          By:
                                                 -------------------------------
                                          Title:
                                                 -------------------------------


                                          --------------------------------------
                                          OPTIONEE

                                          Address:
                                                   -----------------------------

                                          --------------------------------------

ATTACHMENTS

Exhibit A - Stock Option Agreement
Exhibit B - Plan Summary and Prospectus
<PAGE>   3

                                    EXHIBIT A

                             STOCK OPTION AGREEMENT


<PAGE>   4
                                   EXHIBIT B

                          PLAN SUMMARY AND PROSPECTUS

<PAGE>   1
                                                                   EXHIBIT 99.16


                                    ADDENDUM
                                       TO
                             STOCK OPTION AGREEMENT

            The following provisions are hereby incorporated into, and are
hereby made a part of, that certain Stock Option Agreement dated
__________________ (the "Option Agreement") by and between Onyx Acceptance
Corporation (the "Corporation") and ______________________ ("Optionee")
evidencing the stock option granted on such date to Optionee under the terms of
the Corporation's 1998 Non-Officer Stock Option/Stock Issuance Plan, and such
provisions shall be effective immediately. All capitalized terms in this
Addendum, to the extent not otherwise defined herein, shall have the meanings
assigned to them in the Option Agreement.

                       INVOLUNTARY TERMINATION FOLLOWING
                              CHANGE IN CONTROL

            1. The exercisability of the option shall not accelerate upon the
occurrence of a Change in Control, and the option shall, over Optionee's
continued period of Service after the Change in Control, continue to become
exercisable for the Option Shares in accordance with the provisions of the
Option Agreement. However, immediately upon an Involuntary Termination of
Optionee's Service within eighteen (18) months following the Change in Control,
the exercisability of this option, to the extent the option is at the time
outstanding but not otherwise fully exercisable, shall automatically accelerate
so that the option shall immediately become fully exercisable for all the Option
Shares at the time subject to the option and may be exercised for any or all of
those shares as fully vested shares of Common Stock at any time prior to the
earlier of (i) the Expiration Date or (ii) the expiration of the one (1)-year
period measured from the date of the Involuntary Termination.

            2. For purposes of this Addendum, a CHANGE IN CONTROL shall be
deemed to occur in the event of a change in ownership or control of the
Corporation effected through either of the following transactions:

               (i) the acquisition, directly or indirectly, by any person or
      related group of persons (other than the Corporation or a person that
      directly or indirectly controls, is controlled by, or is under common
      control with, the Corporation) of beneficial ownership (within the meaning
      of Rule 13d-3 of the Securities Exchange Act of 1934, as amended) of
      securities possessing more than fifty percent (50%) of the total combined
      voting power of the Corporation's outstanding securities pursuant to a
      tender or exchange offer made directly to the Corporation's stockholders
      which the Board does not recommend such stockholders to accept, or
<PAGE>   2

               (ii) a change in the composition of the Board over a period of
      thirty-six (36) consecutive months or less such that a majority of the
      Board members ceases by reason of one or more contested elections for
      Board membership, to be comprised of individuals who either (A) have been
      Board members continuously since the beginning of such period or (B) have
      been elected or nominated for election as Board members during such period
      by at least a majority of the Board members described in clause (A) who
      were still in office at the time such election or nomination was approved
      by the Board.

            3. The provisions of Paragraph 1 of this Addendum shall govern the
period for which the option is to remain exercisable following the Involuntary
Termination of Optionee's Service within eighteen (18) months after the Change
in Control and shall supersede any provisions to the contrary in the Option
Agreement.

            IN WITNESS WHEREOF, Onyx Acceptance Corporation has caused this
Addendum to be executed by its duly-authorized officer, and Optionee has
executed this Addendum, all as of the Effective Date specified below.

                                    ONYX ACCEPTANCE CORPORATION

                                    By:
                                           -------------------------------------
                                    Title:
                                           -------------------------------------


                                    --------------------------------------------
                                    OPTIONEE


EFFECTIVE DATE:                   , 199  
                ------------------     --


                                       2.

<PAGE>   1
                                                                   EXHIBIT 99.17


                                    ADDENDUM
                                       TO
                             STOCK OPTION AGREEMENT

            The following provisions are hereby incorporated into, and are
hereby made a part of, that certain Stock Option Agreement dated
________________ (the "Option Agreement") by and between Onyx Acceptance
Corporation (the "Corporation") and __________________ ("Optionee") evidencing
the non-statutory stock option granted on such date to Optionee under the terms
of the Corporation's 1998 Non-Officer Stock Option/Stock Issuance Plan, and such
provisions shall be effective immediately. Capitalized terms in this Addendum,
to the extent not otherwise defined herein, shall have the meanings assigned to
such terms in the Option Agreement.

                              SPECIAL TAX ELECTIONS

            1. STOCK WITHHOLDING. Optionee is hereby granted the election to
have the Corporation withhold, at the time the option is exercised, a portion of
the purchased Option Shares with an aggregate Fair Market Value not to exceed
one hundred percent (100%) of the applicable Federal, state and local income and
employment tax withholding liability (the "Taxes") Optionee incurs in connection
with the option exercise.

                  Any such exercise of the election must be effected in
accordance with the following terms and conditions:

                   (i) The election must be made on or before the date the
      liability for the Taxes is determined (the "Tax Determination Date").

                   (ii) The election shall be irrevocable.

                   (iii) The election shall be subject to the approval of the
      Plan Administrator, and none of the Option Shares shall be withheld in
      satisfaction of the Taxes, except to the extent the election is approved
      by the Plan Administrator.

                   (iv) The Option Shares withheld pursuant to the election
      shall be valued at Fair Market Value on the Tax Determination Date.

                   (v) In no event may the number of shares of Common Stock
      requested to be withheld exceed in Fair Market Value the dollar amount of
      the Taxes.


            2. STOCK DELIVERY. Optionee is hereby granted the election to
deliver, at the time the option is exercised, one or more shares of Common Stock
previously acquired by Optionee (other than in connection with the acquisition
triggering the Taxes) with an aggregate Fair Market Value not to exceed one
hundred percent (100%) of the Taxes.
<PAGE>   2
                  Any such exercise of the election must be effected in
accordance with the following terms and conditions:

                   (i) The election must be made on or before the Tax
      Determination Date for the Taxes.

                   (ii) The election shall be irrevocable.

                   (iii) The election shall be subject to the approval of the
      Plan Administrator, and none of the delivered shares of Common Stock shall
      be accepted in satisfaction of the Taxes, except to the extent the
      election is approved by the Plan Administrator.

                   (iv) The shares of Common Stock delivered in satisfaction of
      the Taxes shall be valued at Fair Market Value on the Tax Determination
      Date.

                   (v) In no event may the number of delivered shares exceed in
      Fair Market Value the dollar amount of the Taxes.

            IN WITNESS WHEREOF, Onyx Acceptance Corporation has caused this
Addendum to be executed by its duly-authorized officer, and Optionee has
executed this Addendum, all as of the Effective Date specified below.

                                       ONYX ACCEPTANCE CORPORATION

                                       By:
                                              ----------------------------------
                                       Title:
                                              ----------------------------------


                                       -----------------------------------------
                                       OPTIONEE


EFFECTIVE DATE:                , 199  
                ---------------     --


                                       2

<PAGE>   1
                                                                   EXHIBIT 99.18


                             COMPENSATION AGREEMENT

            Agreement made as of the ______ day of ____________, 199___ by and
between Onyx Acceptance Corporation, a Delaware corporation (the "Corporation"),
and _____________________ ("Optionee").

                               W I T N E S S E T H

            WHEREAS, in consideration for services performed by Optionee, the
Corporation granted Optionee a stock option on ____________, 199__ to purchase
_________ shares of the Corporation's Common Stock (the "Option") upon the terms
and conditions set forth in the documentation evidencing such Option.

            NOW, THEREFORE, in consideration of the above premises, the parties
hereto agree as follows:

            1. The Corporation and Optionee acknowledge and agree that the
Option is granted solely as compensation for services rendered the Corporation
by Optionee and not for any capital-raising purposes or in connection with any
capital-raising activities.

            2. The Option shall not be transferable or assignable except in
connection with Optionee's death.

            3. This agreement is intended solely to memorialize the agreement
and understanding which exists between Optionee and the Corporation concerning
the grant of the Option. Nothing herein or in the documentation evidencing the
Option is intended to provide Optionee with the right to remain in the
Corporation's service for any specific period, and Optionee's services may be
terminated at any time by the Corporation, for any reason, with or without
cause.

            IN WITNESS WHEREOF, the parties hereto have executed this agreement
as of the date first above written.

                                          ONYX ACCEPTANCE CORPORATION

                                          By:
- --------------------------------------        ----------------------------------
                   , OPTIONEE                         AUTHORIZED OFFICER


<PAGE>   1
                                                                   EXHIBIT 99.19

                                                               [OUTSIDE OF PLAN]


                           ONYX ACCEPTANCE CORPORATION
                         NOTICE OF GRANT OF STOCK OPTION

            Notice is hereby given of the following option grant (the "Option")
to purchase shares of the Common Stock of Onyx Acceptance Corporation (the
"Corporation"):

            Optionee:
                      ----------------------------------------------------------

            Grant Date:
                        --------------------------------------------------------

            Vesting Commencement Date:
                                       -----------------------------------------

            Exercise Price:  $                                         per share
                              ----------------------------------------

            Number of Option Shares:                                      shares
                                     ------------------------------------

            Expiration Date: Type of Option: Non-Statutory Stock Option Exercise
            Schedule: The Option shall become exercisable with respect to (i)
            twenty-five percent (25%) of the Option Shares upon Optionee's
            completion of one (1) year of Service measured from the Vesting
            Commencement Date and (ii) the balance of the Option Shares in
            successive equal monthly installments upon Optionee's completion of
            each of the next thirty-six (36) months of Service measured from and
            after the first anniversary of the Vesting Commencement Date. In no
            event shall the Option become exercisable for any additional Option
            Shares after Optionee's cessation of Service.

            Optionee understands and agrees that the Option is granted subject
to and in accordance with the terms of the Option as set forth in the Stock
Option Agreement attached hereto as Exhibit A.

            No Employment or Service Contract. Nothing in this Notice or in the
attached Stock Option Agreement shall confer upon Optionee any right to continue
in Service for any period of specific duration or interfere with or otherwise
restrict in any way the rights of the Corporation (or any Parent or Subsidiary
employing or retaining Optionee) or of Optionee, which rights are hereby
expressly reserved by each, to terminate Optionee's Service at any time for any
reason, with or without cause.
<PAGE>   2

            Definitions.  All capitalized  terms in this Notice shall have the
meaning  assigned  to them in this  Notice  or in the  attached  Stock  Option
Agreement.


                        , 199  
- ------------------------     --
         Date

                                        ONYX ACCEPTANCE CORPORATION


                                        By:
                                                --------------------------------
                                        Title:
                                                --------------------------------


                                        ----------------------------------------
                                        OPTIONEE

                                        Address:
                                                --------------------------------

ATTACHMENTS

Exhibit A - Stock Option Agreement



                                       2
<PAGE>   3
                                    EXHIBIT A

                             STOCK OPTION AGREEMENT


<PAGE>   1
                                                                   EXHIBIT 99.20


                                                               [OUTSIDE OF PLAN]


                           ONYX ACCEPTANCE CORPORATION
                             STOCK OPTION AGREEMENT

RECITALS

       A. Optionee is to render valuable services to the Corporation (or a
Parent or Subsidiary), and this Agreement is executed in connection with the
Corporation's grant of an option to Optionee.

       B. All capitalized terms in this Agreement shall have the meaning
assigned to them in the attached Appendix.

            NOW, THEREFORE, it is hereby agreed as follows:

            1. GRANT OF OPTION. The Corporation hereby grants to Optionee, as of
the Grant Date, an option to purchase up to the number of Option Shares
specified in the Grant Notice. The Option Shares shall be purchasable from time
to time during the option term specified in Paragraph 2 at the Exercise Price.

            2. OPTION TERM. This option shall have a term of ten (10) years
measured from the Grant Date and shall accordingly expire at the close of
business on the Expiration Date, unless sooner terminated in accordance with
Paragraph 5 or 6.

            3. LIMITED TRANSFERABILITY. During Optionee's lifetime, this option
may be assigned in whole or in part in accordance with the terms of a Qualified
Domestic Relations Order. The assigned portion shall be exercisable only by the
person or persons who acquire a proprietary interest in the option pursuant to
such Qualified Domestic Relations Order. The terms applicable to the assigned
portion shall be the same as those in effect for this option immediately prior
to such assignment and shall be set forth in such documents issued to the
assignee as the Board may deem appropriate.

            4. DATES OF EXERCISE. This option shall become exercisable for the
Option Shares in one or more installments as specified in the Grant Notice. As
the option becomes exercisable for such installments, those installments shall
accumulate and the option shall remain exercisable for the accumulated
installments until the Expiration Date or sooner termination of the option term
under Paragraph 5 or 6.

            5. CESSATION OF SERVICE. The option term specified in Paragraph 2
shall terminate (and this option shall cease to be outstanding) prior to the
Expiration Date should any of the following provisions become applicable:
<PAGE>   2

                        (i) Should Optionee cease to remain in Service for any
      reason (other than death, Permanent Disability or Misconduct) while this
      option is outstanding, then Optionee shall have a period of three (3)
      months (commencing with the date of such cessation of Service) during
      which to exercise this option, but in no event shall this option be
      exercisable at any time after the Expiration Date.

                        (ii) Should Optionee die while this option is
      outstanding, then the personal representative of Optionee's estate or the
      person or persons to whom the option is transferred pursuant to Optionee's
      will or in accordance with the laws of descent and distribution shall have
      the right to exercise this option. Such right shall lapse and this option
      shall cease to be outstanding upon the earlier of (A) the expiration of
      the twelve (12)-month period measured from the date of Optionee's death
      or (B) the Expiration Date.

                        (iii) Should Optionee cease Service by reason of
      Permanent Disability while this option is outstanding, then Optionee shall
      have a period of twelve (12) months (commencing with the date of such
      cessation of Service) during which to exercise this option. In no event
      shall this option be exercisable at any time after the Expiration Date.

                        (iv) During the limited period of post-Service
      exercisability, this option may not be exercised in the aggregate for more
      than the number of vested Option Shares for which the option is
      exercisable at the time of Optionee's cessation of Service. Upon the
      expiration of such limited exercise period or (if earlier) upon the
      Expiration Date, this option shall terminate and cease to be outstanding
      for any vested Option Shares for which the option has not been exercised.
      To the extent Optionee is not vested in the Option Shares at the time of
      Optionee's cessation of Service, this option shall immediately terminate
      and cease to be outstanding with respect to those shares.

                        (v) Should Optionee's Service be terminated for
      Misconduct, then this option shall terminate immediately and cease to
      remain outstanding.

                        (vi) In the event of a Corporate Transaction, the
      provisions of Paragraph 6 shall govern the period for which this option is
      to remain exercisable following Optionee's cessation of Service and shall
      supersede any provisions to the contrary in this paragraph.

            6.    SPECIAL ACCELERATION OF OPTION.

                  (a) In the event of a Corporate Transaction, the
exercisability of this option, to the extent outstanding at such time but not
otherwise fully exercisable, shall automatically accelerate so that this option
shall, immediately prior to the effective date of the Corporate Transaction,
become exercisable for any or all of the Option Shares at the time subject to
this option as fully-vested shares of Common Stock. No such acceleration of this
option,


                                       2
<PAGE>   3

however, shall occur if and to the extent: (i) this option is, in connection
with the Corporate Transaction, either to be assumed by the successor
corporation (or parent thereof) or to be replaced with a comparable option to
purchase shares of the capital stock of the successor corporation (or parent
thereof) or (ii) this option is to be replaced with a cash incentive program of
the successor corporation which preserves the spread existing on the Option
Shares for which this option is not exercisable at the time of the Corporate
Transaction (the excess of the Fair Market Value of such Option Shares over the
aggregate Exercise Price payable for such shares) and provides for subsequent
pay-out in accordance with the same exercise schedule in effect for the option
pursuant to the option exercise schedule set forth in the Grant Notice. The
determination of option comparability under clause (i) shall be made by the
Board and such determination shall be final, binding and conclusive.

                  (b) Immediately following the Corporate Transaction, this
option, to the extent not previously exercised, shall terminate and cease to be
outstanding, except to the extent assumed by the successor corporation (or
parent thereof) in connection with the Corporate Transaction.

                  (c) If this option is assumed in connection with a Corporate
Transaction, then this option shall be appropriately adjusted, immediately after
such Corporate Transaction, to apply to the number and class of securities which
would have been issuable to Optionee in consummation of such Corporate
Transaction had the option been exercised immediately prior to such Corporate
Transaction, and appropriate adjustments shall also be made to the Exercise
Price, provided the aggregate Exercise Price shall remain the same.

                  (d) Upon an Involuntary Termination of Optionee's Service
within eighteen (18) months following a Corporate Transaction in which this
option is assumed or replaced, the exercisability of this option, to the extent
outstanding at such time but not otherwise fully exercisable, shall
automatically accelerate so that this option shall immediately become fully
exercisable for all the Option Shares at the time subject to this option as
fully-vested shares of Common Stock and may be exercised for any or all of those
shares at any time prior to the earlier of (i) the Expiration Date or (ii) the
expiration of the one (1)-year period measured from the effective date of the
Involuntary Termination.

                  (e) This Agreement shall not in any way affect the right of
the Board to adjust, reclassify, reorganize or otherwise change its capital or
business structure or to merge, consolidate, dissolve, liquidate or sell or
transfer all or any part of its business or assets.

            7. ADJUSTMENT IN OPTION SHARES. Should any change be made to the
Common Stock by reason of any stock split, stock dividend, recapitalization,
combination of shares, exchange of shares or other change affecting the
outstanding Common Stock as a class without the Corporation's receipt of
consideration, appropriate adjustments shall be made to (i) the total number
and/or class of securities subject to this option and (ii) the Exercise Price in
order to reflect such change and thereby preclude a dilution or enlargement of
benefits hereunder.


                                       3
<PAGE>   4

            8. STOCKHOLDER RIGHTS. The holder of this option shall not have any
stockholder rights with respect to the Option Shares until such person shall
have exercised the option, paid the Exercise Price and become a holder of record
of the purchased shares.

            9. MANNER OF EXERCISING OPTION.

                  (a) In order to exercise this option with respect to all or
any part of the Option Shares for which this option is at the time exercisable,
Optionee (or any other person or persons exercising the option) must take the
following actions:

                        (i) Execute and deliver to the Corporation a Notice of
      Exercise for the Option Shares for which the option is exercised.

                        (ii) Pay the aggregate Exercise Price for the purchased
      shares in one or more of the following forms:

                              (A) cash or check made payable to the Corporation;

                              (B) a promissory note payable to the Corporation,
            but only to the extent authorized by the Board in accordance with
            Paragraph 13;

                              (C) shares of Common Stock held by Optionee (or
            any other person or persons exercising the option) for the requisite
            period necessary to avoid a charge to the Corporation's earnings for
            financial reporting purposes and valued at Fair Market Value on the
            Exercise Date; or

                              (D) through a special sale and remittance
            procedure pursuant to which Optionee (or any other person or persons
            exercising the option) shall concurrently provide irrevocable
            written instructions (I) to a Corporation-designated brokerage firm
            to effect the immediate sale of the purchased shares and remit to
            the Corporation, out of the sale proceeds available on the
            settlement date, sufficient funds to cover the aggregate Exercise
            Price payable for the purchased shares plus all applicable Federal,
            state and local income and employment taxes required to be withheld
            by the Corporation by reason of such exercise and (II) to the
            Corporation to deliver the certificates for the purchased shares
            directly to such brokerage firm in order to complete the sale.

                  Except to the extent the sale and remittance procedure is
            utilized in connection with the option exercise, payment of the
            Exercise Price must accompany the Notice of Exercise delivered to
            the Corporation in connection with the option exercise.


                                       4
<PAGE>   5

                        (iii) Furnish to the Corporation appropriate
      documentation that the person or persons exercising the option (if other
      than Optionee) have the right to exercise this option.

                        (iv) Make appropriate arrangements with the Corporation
      (or Parent or Subsidiary employing or retaining Optionee) for the
      satisfaction of all Federal, state and local income and employment tax
      withholding requirements applicable to the option exercise.

                  (b) As soon as practical after the Exercise Date, the
Corporation shall issue to or on behalf of Optionee (or any other person or
persons exercising this option) a certificate for the purchased Option Shares,
with the appropriate legends affixed thereto.

                  (c) In no event may this option be exercised for any
fractional shares.

            10. COMPLIANCE WITH LAWS AND REGULATIONS.

                  (a) The exercise of this option and the issuance of the Option
Shares upon such exercise shall be subject to compliance by the Corporation and
Optionee with all applicable requirements of law relating thereto and with all
applicable regulations of any stock exchange (or the Nasdaq National Market, if
applicable) on which the Common Stock may be listed for trading at the time of
such exercise and issuance.

                  (b) The inability of the Corporation to obtain approval from
any regulatory body having authority deemed by the Corporation to be necessary
to the lawful issuance and sale of any Common Stock pursuant to this option
shall relieve the Corporation of any liability with respect to the non-issuance
or sale of the Common Stock as to which such approval shall not have been
obtained. The Corporation, however, shall use its best efforts to obtain all
such approvals.

            11. SUCCESSORS AND ASSIGNS. Except to the extent otherwise provided
in Paragraphs 3 and 6, the provisions of this Agreement shall inure to the
benefit of, and be binding upon, the Corporation and its successors and assigns
and Optionee, Optionee's assigns and the legal representatives, heirs and
legatees of Optionee's estate.

            12. NOTICES. Any notice required to be given or delivered to the
Corporation under the terms of this Agreement shall be in writing and addressed
to the Corporation at its principal corporate offices. Any notice required to be
given or delivered to Optionee shall be in writing and addressed to Optionee at
the address indicated below Optionee's signature line on the Grant Notice. All
notices shall be deemed effective upon personal delivery or upon deposit in the
U.S. mail, postage prepaid and properly addressed to the party to be notified.

            13. FINANCING. The Board may, in its absolute discretion and without
any obligation to do so, permit Optionee to pay the Exercise Price for the
purchased Option Shares by delivering a promissory note. The terms of any such
promissory note (including the interest rate, the requirements for collateral
and the terms of repayment) shall be established by the Board in its sole
discretion.


                                       5
<PAGE>   6

            14. CONSTRUCTION. All decisions of the Board with respect to any
question or issue arising under this Agreement shall be conclusive and binding
on all persons having an interest in this option.

            15. GOVERNING LAW. The interpretation, performance and enforcement
of this Agreement shall be governed by the laws of the State of California
without resort to that State's conflict-of-laws rules.

                                       6

<PAGE>   7
                                    EXHIBIT I

                               NOTICE OF EXERCISE

            I hereby notify Onyx Acceptance Corporation (the "Corporation") that
I elect to purchase     shares of the Corporation's Common Stock (the "Purchased
Shares") at the option exercise price of $      per share (the "Exercise Price")
pursuant to that certain option (the "Option") granted to me on          , 199 .

            Concurrently with the delivery of this Exercise Notice to the
Corporation, I shall hereby pay to the Corporation the Exercise Price for the
Purchased Shares in accordance with the provisions of my agreement with the
Corporation (or other documents) evidencing the Option and shall deliver
whatever additional documents may be required by such agreement as a condition
for exercise. Alternatively, I may utilize the special broker-dealer sale and
remittance procedure specified in my agreement to effect payment of the Exercise
Price.

                        , 199  
- ------------------------     --
Date

                                        ----------------------------------------
                                        Optionee

                                        Address:
                                                 -------------------------------

                                        ----------------------------------------

Print name in exact manner
it is to appear on the
stock certificate:
                                        ----------------------------------------

Address to which certificate
is to be sent, if different
from address above:
                                        ----------------------------------------

                                        ----------------------------------------

Social Security Number:
                                        ----------------------------------------

Employee Number:
                                        ----------------------------------------
<PAGE>   8
                                    APPENDIX

            The following definitions shall be in effect under the Agreement:

            A. AGREEMENT shall mean this Stock Option Agreement.

            B. BOARD shall mean the Corporation's Board of Directors.

            C. CODE shall mean the Internal Revenue Code of 1986, as amended.

            D. COMMON STOCK shall mean the Corporation's common stock.

            E. CORPORATE TRANSACTION shall mean either of the following
stockholder-approved transactions to which the Corporation is a party:

                  (i) a merger or consolidation in which securities possessing
            more than fifty percent (50%) of the total combined voting power of
            the Corporation's outstanding securities are transferred to a person
            or persons different from the persons holding those securities
            immediately prior to such transaction, or

                  (ii) the sale, transfer or other disposition of all or
            substantially all of the Corporation's assets in complete
            liquidation or dissolution of the Corporation.

            F. CORPORATION shall mean Onyx Acceptance Corporation, a Delaware
corporation.

            G. DOMESTIC RELATIONS ORDER shall mean any judgment, decree or order
(including approval of a property settlement agreement) which provides or
otherwise conveys, pursuant to applicable State domestic relations laws
(including community property laws), marital property rights to any spouse or
former spouse of the Optionee.

            H. EMPLOYEE shall mean an individual who is in the employ of the
Corporation (or any Parent or Subsidiary), subject to the control and direction
of the employer entity as to both the work to be performed and the manner and
method of performance.

            I. EXERCISE DATE shall mean the date on which the option shall have
been exercised in accordance with Paragraph 9 of the Agreement.

            J. EXERCISE PRICE shall mean the exercise price per share as
specified in the Grant Notice.

            K. EXPIRATION DATE shall mean the date on which the option expires
as specified in the Grant Notice.


                                      A-1
<PAGE>   9

            L. FAIR MARKET VALUE per share of Common Stock on any relevant date
shall be determined in accordance with the following provisions:

                  (i) If the Common Stock is at the time traded on the Nasdaq
            National Market, then the Fair Market Value shall be the closing
            selling price per share of Common Stock on the date in question, as
            the price is reported by the National Association of Securities
            Dealers on the Nasdaq National Market or any successor system. If
            there is no closing selling price for the Common Stock on the date
            in question, then the Fair Market Value shall be the closing selling
            price on the last preceding date for which such quotation exists.

                  (ii) If the Common Stock is at the time listed on any Stock
            Exchange, then the Fair Market Value shall be the closing selling
            price per share of Common Stock on the date in question on the Stock
            Exchange determined by the Corporation to be the primary market for
            the Common Stock, as such price is officially quoted in the
            composite tape of transactions on such exchange. If there is no
            closing selling price for the Common Stock on the date in question,
            then the Fair Market Value shall be the closing selling price on the
            last preceding date for which such quotation exists.

            M. GRANT DATE shall mean the date of grant of the option as
specified in the Grant Notice.

            N. GRANT NOTICE shall mean the Notice of Grant of Stock Option
accompanying the Agreement, pursuant to which Optionee has been informed of the
basic terms of the option evidenced hereby.

            O. INVOLUNTARY TERMINATION shall mean the termination of Optionee's
Service which occurs by reason of:

                  (i) Optionee's involuntary dismissal or discharge by the
            Corporation for reasons other than Misconduct, or

                  (ii) Optionee's voluntary resignation following (A) a change
            in Optionee's position with the Corporation (or Parent or Subsidiary
            employing Optionee) which materially reduces Optionee's level of
            responsibility, (B) a reduction in Optionee's level of compensation
            (including base salary, fringe benefits and participation in
            corporate-performance based bonus or incentive programs) by more
            than fifteen percent (15%) or (C) a relocation of Optionee's place
            of employment by more than fifty (50) miles, provided and only if
            such change, reduction or relocation is effected by the Corporation
            without Optionee's consent.


                                      A-2
<PAGE>   10

            P. MISCONDUCT shall mean the commission of any act of fraud,
embezzlement or dishonesty by Optionee, any unauthorized use or disclosure by
Optionee of confidential information or trade secrets of the Corporation (or any
Parent or Subsidiary), or any other intentional misconduct by Optionee adversely
affecting the business or affairs of the Corporation (or any Parent or
Subsidiary) in a material manner. The foregoing definition shall not be deemed
to be inclusive of all the acts or omissions which the Corporation (or any
Parent or Subsidiary) may consider as grounds for the dismissal or discharge of
Optionee or any other individual in the Service of the Corporation (or any
Parent or Subsidiary).

            Q. NON-STATUTORY OPTION shall mean an option not intended to satisfy
the requirements of Code Section 422.

            R. NOTICE OF EXERCISE shall mean the notice of exercise in the form
attached hereto as Exhibit I.

            S. OPTION SHARES shall mean the number of shares of Common Stock
subject to the option as specified in the Grant Notice.

            T. OPTIONEE shall mean the person to whom the option is granted as
specified in the Grant Notice.

            U. PARENT shall mean any corporation (other than the Corporation) in
an unbroken chain of corporations ending with the Corporation, provided each
corporation in the unbroken chain (other than the Corporation) owns, at the time
of the determination, stock possessing fifty percent (50%) or more of the total
combined voting power of all classes of stock in one of the other corporations
in such chain.

            V. PERMANENT DISABILITY shall mean the inability of Optionee to
engage in any substantial gainful activity by reason of any medically
determinable physical or mental impairment which is expected to result in death
or has lasted or can be expected to last for a continuous period of twelve (12)
months or more.

            W. QUALIFIED DOMESTIC RELATIONS ORDER shall mean a Domestic
Relations Order which substantially complies with the requirements of Code
Section 414(p). The Board shall have the sole discretion to determine whether a
Domestic Relations Order is a Qualified Domestic Relations Order.

            X. SERVICE shall mean the Optionee's performance of services for the
Corporation (or any Parent or Subsidiary) in the capacity of an Employee, a
non-employee member of the board of directors or a consultant or independent
advisor.

            Y.    STOCK  EXCHANGE  shall mean the American  Stock  Exchange or
the New York Stock Exchange.


                                      A-3
<PAGE>   11

            Z. SUBSIDIARY shall mean any corporation (other than the
Corporation) in an unbroken chain of corporations beginning with the
Corporation, provided each corporation (other than the last corporation) in the
unbroken chain owns, at the time of the determination, stock possessing fifty
percent (50%) or more of the total combined voting power of all classes of stock
in one of the other corporations in such chain.



                                      A-4


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