Group 1 Automotive (GPI) 8-K Group 1 Automotive Schedules 2017 Third Quarter Earnings Release, Conference Call and Webcast

Exhibit 99.1

FOR IMMEDIATE RELEASE

Group 1 Automotive Schedules 2017 Third Quarter Earnings Release, Conference Call and Webcast

HOUSTON, October 11, 2017 — Group 1 Automotive, Inc.(NYSE: GPI), an international, Fortune 500 automotive retailer, today announced that it will release financial results for the third quarter ended September 30, 2017, on Thursday, October 26, 2017, 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 afternoon at 1 p.m. ET.

The live conference call may be accessed by thetelephone details below or via webcast on the Company’s investor relations website athttp://www.group1corp.com/events. The webcast replay will be available for 30 days.

The conference call will be available by dialing in 15 minutes prior to the start of the call at:

Domestic:	1-888-317-6003
International:	1-412-317-6061
Conference ID:	7378333
A telephonic replay will be available following the call through November 1, 2017 by dialing:
Domestic:	1-877-344-7529
International:	1-412-317-0088
Replay ID:	10113415

ABOUT GROUP 1 AUTOMOTIVE, INC.
Group 1 owns and operates 174automotive dealerships, 228 franchises, and 47 collision centers in the United States, the United Kingdom and Brazil that offer 32 brands of automobiles. Through its dealerships, the Company sells new and used cars and light trucks; arranges related vehicle financing; sells service contracts; provides automotive maintenance and repair services; and sells vehicle parts.

Investors please visitwww.group1corp.com,www.group1auto.com,www.group1collision.com,www.facebook.com/group1auto, andwww.twitter.com/group1auto, where Group 1 discloses additional information about the Company, its business, and its results of operations.

SOURCE: Group 1 Automotive, Inc.

Investor contacts:
Sheila Roth
Manager, Investor Relations
Group 1 Automotive, Inc.
713-647-5741 |sroth@group1auto.com

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