Group 1 Automotive (GPI) 8-K Group 1 Automotive To Present At Stephens Spring Investment Conference

Exhibit 99.1

FOR IMMEDIATE RELEASE

Group 1 Automotive To Present At Stephens Spring Investment Conference

HOUSTON, May 30, 2012 —Group 1 Automotive, Inc. (NYSE: GPI),a Fortune 500 automotive retailer, today announced that senior management will present at the Stephens Spring Investment Conference on June 5 at The New York Palace Hotel in New York City. The presentation is scheduled to begin at 11 a.m. ET.

A live audio webcast, with a replay available through July 5, will be available on the Investor Relations section of Group 1’s website athttp://www.group1corp.com/news/events.aspx orwww.group1auto.com.

About Group 1 Automotive, Inc.
Group 1 owns and operates 120automotive dealerships, 152 franchises, and 28collision centers in the United States and the United Kingdom that offer 31 brands of automobiles. Through its dealerships, the company sells new and used cars and light trucks; arranges related vehicle financing, service and insurance contracts; provides automotive maintenance and repair services; and sells vehicle parts.

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

SOURCE: Group 1 Automotive, Inc.

Investor Contacts:
Kim Paper Canning
Manager, Investor Relations
Group 1 Automotive, Inc.
713-647-5741 |kpaper@group1auto.com

Media Contacts:
Pete DeLongchamps
V.P. Financial Services and Manufacturer Relations
Group 1 Automotive, Inc.
713-647-5770 |pdelongchamps@group1auto.com
or
Clint Woods
Pierpont Communications, Inc.
713-627-2223 |cwoods@piercom.com