Exhibit 32.1
CERTIFICATION OF
CHIEF EXECUTIVE OFFICER
OF GROUP 1 AUTOMOTIVE, INC.
PURSUANT TO 18 U.S.C. § 1350
In connection with the accompanying report on Form 10-Q for the three-month period ended September 30, 2006, and filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Earl J. Hesterberg, Chief Executive Officer of Group 1 Automotive, Inc. (the “Company”), hereby certify, to the best of my knowledge, that:
| 1. | | The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
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| 2. | | The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. |
Date: November 9, 2006
| | | | |
| | /s/ Earl J. Hesterberg Earl J. Hesterberg | | |
| | Chief Executive Officer | | |
A signed original of this written statement required by Section 906 has been provided to Group 1 Automotive, Inc. and will be retained by Group 1 Automotive, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.