UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): SEPTEMBER 10, 2004 CREDIT ACCEPTANCE CORPORATION (Exact Name of Registrant as Specified in its Charter) Commission File Number 000-20202 MICHIGAN 38-1999511 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) 25505 W. TWELVE MILE ROAD, SUITE 3000 48034-8339 SOUTHFIELD, MICHIGAN (Zip Code) (Address of Principal Executive Offices) (Registrant's telephone number, including area code): (248) 353-2700 Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: / / Written Communications pursuant to Rule 425 under the Securities Act (17 CFR230.425) / / Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) / / Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) / / Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 8.01 OTHER EVENTS. On September 10, 2004, Credit Acceptance Corporation (the "Company") issued a press release announcing the preliminary results of its modified Dutch auction tender offer, which expired at 5:00 p.m. on September 9, 2004. The Company commenced the tender offer on August 11, 2004 to purchase up to 3,000,000 shares of its common stock at a price between $14.00 to $20.00 per share. The press release, dated September 10, 2004, is attached as Exhibit 99.1 to this Form 8-K. ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS. (c) Exhibits. 99.1 Press Release dated September 10, 2004 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. CREDIT ACCEPTANCE CORPORATION (Registrant) By: /s/ Douglas W. Busk ------------------------ Douglas W. Busk Treasurer September 13, 2004

INDEX OF EXHIBITS EXHIBIT NO. DESCRIPTION 99.1 Press Release dated September 10, 2004

[CREDIT ACCEPTANCE LOGO] SILVER TRIANGLE BUILDING 25505 WEST TWELVE MILE ROAD O SUITE 3000 SOUTHFIELD, MI 48034-8339 (248) 353-2700 WWW.CREDITACCEPTANCE.COM NEWS RELEASE FOR IMMEDIATE RELEASE DATE: SEPTEMBER 10, 2004 INVESTOR RELATIONS: DOUGLAS W. BUSK TREASURER (248) 353-2700 EXT. 4432 IR@CREDITACCEPTANCE.COM NASDAQ SYMBOL: CACC CREDIT ACCEPTANCE CORPORATION ANNOUNCES PRELIMINARY RESULTS OF ITS MODIFIED DUTCH AUCTION TENDER OFFER SOUTHFIELD, MICHIGAN -- SEPTEMBER 10, 2004 -- CREDIT ACCEPTANCE CORPORATION (NASDAQ: CACC) today announced the preliminary results of its modified Dutch auction tender offer, which expired at 5:00 p.m. on September 9, 2004. Credit Acceptance commenced the tender offer on August 11, 2004 to purchase up to 3,000,000 shares of its common stock at a price between $14.00 and $20.00 per share, net to the seller in cash, without interest. Georgeson Shareholder Communications, Inc. acted as information agent for the offer and Computershare Trust Company of New York acted as the depositary. Based on a preliminary count by the depositary, the total number of shares tendered in the offer was 2,746,728, which includes 289,304 pursuant to the guaranteed delivery procedure. Based on the preliminary count, the Company expects to purchase all properly tendered shares at $20.00 per share, net to the seller in cash, without interest, for a total purchase price of approximately $54.9 million. All shares purchased in the tender offer will be purchased at the same price. The actual number of shares to be purchased and the purchase price are subject to final confirmation and the proper delivery of all shares tendered and not withdrawn, including shares tendered pursuant to the guaranteed delivery procedure. The actual number of shares and purchase price per share will be announced promptly following completion of the verification process. Payment for shares accepted and the return of all shares tendered but not accepted will occur promptly after determination of the number of shares properly tendered. DESCRIPTION OF CREDIT ACCEPTANCE CORPORATION Since 1972, Credit Acceptance has provided auto loans to consumers, regardless of their credit history. Our product is offered through a nationwide network of automobile dealers who benefit by selling vehicles to consumers who otherwise could not obtain financing, by repeat and referral sales generated by these same customers, and from sales to customers responding to advertisements for our product, but who actually end up qualifying for traditional financing. Without our product, consumers are often unable to purchase a vehicle or they purchase an unreliable one and are not provided the opportunity to improve their credit standing. As we report to the three national credit reporting agencies, a significant number of our customers improve their lives by improving their credit score and move on to more traditional sources of financing. Credit Acceptance is publicly traded on the NASDAQ National Market under the symbol CACC. For more information, visit www.creditacceptance.com.