Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:        

(1) Registration Statement (Form S-3 No. 333-179468) of Group 1 Automotive, Inc. and related Prospectus,

(2) Registration Statement (Form S-3 No. 333-137088) of Group 1 Automotive, Inc. and related Prospectus;

(3) Registration Statement (Form S-8 No. 333-161324) pertaining to the 1998 Employees' Savings Plan of Group 1 Automotive, Inc.,

(4) Registration Statement (Form S-8 No. 333-145034) pertaining to the Deferred Compensation Plan and 2007 Long Term Incentive Plan of Group 1 Automotive, Inc., and

(5) Registration Statement (Form S-8 No. 333-168365) pertaining to the 2007 Long Term Incentive Plan of Group 1 Automotive, Inc.;

of our reports dated March 3, 2014, with respect to the consolidated financial statements of Group 1 Automotive, Inc. and subsidiaries and the effectiveness of internal control over financial reporting of Group 1 Automotive, Inc. and subsidiaries included in this Annual Report (Form 10-K) of Group 1 Automotive, Inc. and subsidiaries for the year ended December 31, 2013.

/s/ Ernst & Young LLP    

Houston, Texas

March 3, 2014