EXHIBIT 15.20

May 5, 2006

Dollar Thrifty Automotive Group, Inc.

5330 East 31^st Street

Tulsa, Oklahoma

We have made a review, in accordance with the standards of the Public Company Accounting Oversight Board (United States), of the unaudited interim financial information of Dollar Thrifty Automotive Group, Inc. and subsidiaries for the periods ended March 31, 2006 and 2005, as indicated in our report dated May 5, 2006; because we did not perform an audit, we expressed no opinion on that information.

We are aware that our report referred to above, which is included in your Quarterly Report on Form 10-Q for the quarter ended March 31, 2006, is incorporated by reference in Registration Statements No. 333-79603, No. 333-89189, No. 333-33144, No. 333-33146, No. 333-50800 and No. 333-128714 on Form S-8.

We also are aware that the aforementioned report, pursuant to Rule 436 (c) under the Securities Act of 1933, is not considered a part of the Registration Statement prepared or certified by an accountant or a report prepared or certified by an accountant within the meaning of Sections 7 and 11 of that Act.

/s/ DELOITTE & TOUCHE LLP

Tulsa, Oklahoma