<PAGE> 1
EXHIBIT 23(a)
Consent of Independent Auditors
We consent to the incorporation by reference in the Registration Statement on
Form S-8 of Comerica Incorporated, pertaining to the Comerica Incorporated
Preferred Savings Plan, of our report dated January 18, 2000, with respect to
the consolidated financial statements of Comerica Incorporated, incorporated by
reference in the Annual Report (Form 10-K) for the year ended December 31, 1999,
filed with the Securities and Exchange Commission.
/s/ Ernst & Young LLP
November 28, 2000
Detroit, Michigan
