Exhibit 99.1

               COMERICA TO RECORD A $213 MILLION AFTER-TAX CHARGE
               RELATED TO INCREMENTAL PROVISION FOR CREDIT LOSSES,
                               GOODWILL IMPAIRMENT

DETROIT/OCTOBER 2, 2002 -- Comerica Incorporated (NYSE: CMA) today announced
that it will record a $328 million charge ($213 million after-tax, or $1.21 per
diluted share) related to an incremental provision for credit losses and
goodwill impairment for the company's Munder Capital Management subsidiary.

The incremental provision for credit losses totals approximately $247 million,
of which $40 million ($26 million after-tax, or $0.15 per diluted share) has
been determined to relate to the second quarter of 2002. The allowance for
credit losses as a percent of period-end loans at September 30, 2002, is
estimated to be 1.90 percent, compared with 1.81 percent previously reported at
June 30, 2002 and 1.85 percent as restated. Incremental net charge-offs will be
approximately $212 million, of which $22 million will be reflected in the second
quarter.

Second quarter earnings will be reduced to $161 million, or $0.90 per diluted
share, compared to previously reported earnings of $184 million, or $1.03 per
diluted share, including the related effect of lower incentive compensation of
$5 million ($3 million after-tax, or $0.02 per diluted share). The additional
provision and charge-offs related to the second quarter were determined during a
recent subsidiary regulatory examination.

The third quarter goodwill impairment of $86 million ($56 million after-tax,
$0.31 per diluted share) results from the continued decline in equity markets
and its related impact on Munder's valuation.

"The lagging economy and ongoing volatility in the equity markets affect many
companies, including our own customers," said Ralph W. Babb Jr., chairman,
president and chief executive officer. "Given the uncertainties surrounding the
timing of an economic recovery, the strengthening of our allowance for credit
losses and coverage ratios recognizes the challenges of the current operating
environments. And, we identified additional credits, particularly in the retail,
automotive and manufacturing sectors, where a write-down, accelerated work-out
plan or sale is the most prudent course of action."

OUTLOOK FOR 2002
Comerica expects the charge to reduce projected full year 2002 earnings from its
previous estimate by $1.21 per diluted share. Including this charge and the
previously announced impact ($0.06 per diluted share) of adoption of the fair
value method of accounting for stock options, Comerica






expects earnings to range from $3.40 to $3.50 per diluted share for the full
year 2002.

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Comerica will host a conference call to review third quarter 2002 financial
results at 8 a.m. EDT Wednesday, October 16, 2002. Interested parties may access
the conference call by calling (706) 679-5261 (event ID No. 5779063). The call
will also be accessible on the Internet at www.comerica.com. A replay of the
conference call will be available approximately two hours following the call
through Wednesday, November 13, 2002. The conference call replay can be accessed
by calling (800) 642-1687 or (706) 645-9291 (event ID No. 5779063). The replay
can also be accessed via Comerica's "Investor Relations" page at
www.comerica.com.

Comerica Incorporated is a multi-state financial services provider headquartered
in Detroit, Michigan, with bank subsidiaries in Michigan, California and Texas,
banking operations in Florida, and businesses in several other states. Comerica
also has an investment services affiliate, Munder Capital Management, commercial
banking operations in Canada and a commercial banking subsidiary in Mexico.

FORWARD LOOKING STATEMENT
Any statements in this news release that are not historical facts are
forward-looking statements as defined in the Private Securities Litigation
Reform Act of 1995. Words such as "expect," "believe," "intend," "estimate,"
"project," "may" and similar expressions are intended to identify
forward-looking statements. These forward-looking statements are predicated on
management's beliefs and assumptions based on information known to Comerica's
management as of the date of this news release and do not purport to speak as of
any other date. Forward-looking statements may include descriptions of plans and
objectives of Comerica's management for future or past operations, products or
services, and forecasts of the Company's revenue, earnings or other measures of
economic performance, including statements of profitability, business segments
and subsidiaries, estimates of credit quality trends and global stability. Such
statements reflect the view of Comerica's management as of this date with
respect to future events and are not guarantees of future performance, involve
assumptions and are subject to substantial risks and uncertainties, such as the
changes in Comerica's plans, objectives, expectations and intentions. Should one
or more of these risks materialize or should underlying beliefs or assumptions
prove incorrect, the Company's actual results could differ materially from those
discussed. Factors that could cause or contribute to such differences are
changes in interest rates, changes in the accounting treatment of any particular
item, the results of regulatory examinations, changes in industries where
Comerica has a concentration of loans, changes in the political, economic and
regulatory stability in countries where Comerica operates, changes in the level
of fee income, changes in general economic conditions and related credit and
market conditions, and the impact of regulatory responses to any of the
foregoing. Forward-looking statements speak only as of the date they are made.
Comerica does not undertake to update forward-looking statements to reflect
facts, circumstances, assumptions or events that occur after the date the
forward-looking statements are made. For any forward-looking statements made in
this news release or in any documents, Comerica claims the protection of the
safe harbor for forward-looking statements contained in the Private Securities
Litigation Reform Act of 1995.

MEDIA CONTACTS:                           INVESTOR CONTACTS:
Sharon R. McMurray                        Helen L. Arsenault
(313) 222-4881                               (313) 222-2840

Wayne J. Mielke                           Judith M. Chavis
(313) 222-4732                               (313) 222-6317