EXHIBIT 15
Joint Filing Agreement
The undersigned hereby agree that any amendment to the Schedule 13D,
relating to the common stock, par value $0.0001 per share, of United Auto
Group, Inc., on or after the date as of which this joint filing agreement
is made, are and will be filed jointly by the undersigned with the
Securities and Exchange Commission pursuant to Rule 13d-1(k)(1) under the
Securities Exchange Act of 1934, as amended, on behalf of each such person.
Dated as of September 12, 2000 INTERNATIONAL MOTOR CARS GROUP I, L.L.C.
By: PENSKE CAPITAL PARTNERS, L.L.C.
Its Managing Member
By: /s/ James A. Hislop
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James A. Hislop
Managing Member
INTERNATIONAL MOTOR CARS GROUP II, L.L.C.
By: PENSKE CAPITAL PARTNERS, L.L.C.
Its Managing Member
By: /s/ James A. Hislop
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James A. Hislop
Managing Member
PENSKE CAPITAL PARTNERS, L.L.C.
By: /s/ James A. Hislop
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James A. Hislop
Managing Member
PENSKE CORPORATION
By: /s/ Robert Kurnick
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Robert Kurnick
Executive Vice President
/s/ James A. Hislop
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James A. Hislop
/s/ Roger S. Penske
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Roger S. Penske