Exhibit 99.10
                                                                   -------------





      Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant
                to Section 906 of the Sarbanes-Oxley Act of 2002


In connection with the Quarterly Report of Dollar Thrifty Automotive Group, Inc.
(the  "Company") on Form 10-Q for the period ended March 31, 2003, as filed with
the Securities  and Exchange  Commission on the date hereof (the  "Report"),  I,
Steven B. Hildebrand,  Chief Financial Officer of the Company, certify, pursuant
to 18 U.S.C.  ss.1350,  as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act
of 2002, that:

     (1)  The Report fully  complies with the  requirements  of Section 13(a) or
          15(d) of the Securities Exchange Act of 1934; and

     (2)  The  information  contained  in the  Report  fairly  presents,  in all
          material respects,  the financial  condition and results of operations
          of the Company.





                                             /s/ STEVEN B. HILDEBRAND
                                              ----------------------------------
                                             Steven B. Hildebrand
                                             Chief Financial Officer
                                             May 14, 2003





A signed  original of this  written  statement  required by Section 906 has been
provided to Dollar Thrifty Automotive Group, Inc. and will be retained by Dollar
Thrifty  Automotive  Group,  Inc. and furnished to the  Securities  and Exchange
Commission or its staff upon request.