EX-32.1 17 a2181006zex-32_1.htm EXHIBIT 32.1
QuickLinks -- Click here to rapidly navigate through this document

EXHIBIT 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350

In connection with the quarterly report of Hertz Global Holdings, Inc. (the "Company") on Form 10-Q for the period ending September 30, 2007 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Mark P. Frissora, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

    (1)
    the Report, to which this statement is furnished as an Exhibit, 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.

Date: November 13, 2007

  By:   /s/  MARK P. FRISSORA      
Mark P. Frissora
Chief Executive Officer



QuickLinks

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. SECTION 1350