NEWS RELEASE 950 Echo Lane, Suite 100 Houston, TX 77024

AT GROUP 1:	President and CEO	Earl J. Hesterberg	(713) 647-5700
	Senior Vice President and CFO	John C. Rickel	(713) 647-5700
	Manager, Investor Relations	Kim Paper Canning	(713) 647-5700
AT Fleishman-Hillard:	Investors/Media	Russell A. Johnson	(713) 513-9515

FOR IMMEDIATE RELEASE
THURSDAY, JULY 13, 2006

GROUP 1 AUTOMOTIVE SCHEDULES 2006 SECOND-QUARTER
EARNINGS RELEASE AND CONFERENCE CALL

HOUSTON, July 13, 2006 — Group 1 Automotive, Inc. (NYSE: GPI), a Fortune 500 automotive retailer, announced that it will release financial results for the second quarter ended June 30, 2006, on Tuesday, Aug. 1, before market open. Earl J. Hesterberg, Group 1’s president and chief executive officer, and the company’s senior management team will host a conference call to discuss the results later that morning at 10 a.m. EDT.

The conference call will be simulcast live on the Internet at www.group1auto.com through the Investor Relations section. A replay will be available for 30 days.

The conference call will also be available live by dialing in 10 minutes prior to the call at: 800-240-2430 (domestic) or 303-262-2130 (international).

A telephonic replay will be available through Aug. 8 by dialing: 800-405-2236 (domestic) or 303-590-3000 (international), with passcode: 11065626#.

About Group 1 Automotive, Inc.
Group 1 owns 93 automotive dealerships comprised of 134 franchises, 33 brands and 30 collision service centers in California, Colorado, Florida, Georgia, Louisiana, Massachusetts, New Hampshire, New Jersey, New Mexico, New York, Oklahoma and Texas. Through its dealerships, the company sells new and used cars and light trucks; arranges related financing, vehicle service and insurance contracts; provides maintenance and repair services; and sells replacement parts.

Group 1 Automotive can be reached on the Internet at www.group1auto.com.