Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-58670 of Avis Budget Group, Inc. (formerly Cendant Corporation) on Form S-8 of our report dated June 28, 2007 appearing in this Annual Report on Form 11-K of the Avis Voluntary Investment Savings Plan for the year ended December 31, 2006.

/s/ Deloitte & Touche LLP

New York, New York

June 28, 2007