EXHIBIT 23.1 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in Registration Statement No. 333-39997 of United Auto Group, Inc. on Form S-3 and Registration Statement Nos. 333-14971, 333-26219 and 333-50816 on Form S-8 of our report dated February 4, 2002 (except for Note 14, as to which the date is April 29, 2002), appearing in this Current Report on Form 8-K under the Securities Exchange Act of 1934 Form 8-K of United Auto Group, Inc. dated May 9, 2002, as amended. /s/ DELOITTE & TOUCHE LLP New York, New York May 10, 2002