<PAGE>

                       SECURITIES AND EXCHANGE COMMISSION


                             WASHINGTON, D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT


                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                         Date of Report: August 14, 2000

                 AmeriCredit Automobile Receivables Trust 2000-B
             (Exact Name of Registrant as specified in its charter)

         United States                 333-36365               88-0459933
         -------------                 ---------               ----------
 (State or Other Jurisdiction   (Commission File Number)     (I.R.S. Employer
       of Incorporation)                                  Identification Number)



                            c/o AmeriCredit Financial
                                 Services, Inc.
                           Attention: Daniel E. Berce
                          801 Cherry Street, Suite 3900
                              Fort Worth, TX 76102
                              (Address of Principal
                                Executive Office)

                                 (817) 302-7000
                            Registrant's phone number

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Item 5.       Other Events

         Information relating to distributions to Noteholders for the July 2000
         Collection Period of the Registrant in respect of the Class A-1 Asset
         Backed Notes, Class A-2 Asset Backed Notes, Class A-3 Floating Rate
         Asset Backed Notes, and Class A-4 Floating Rate Asset Backed Notes
         (collectively, the "Notes") issued by the Registrant. The performance
         of the Receivables held by the Registrant, together with certain other
         information relating to the Notes, is contained in the Preliminary
         Servicer's Certificate and the Servicer's Certificate for the
         referenced Collection Period. Both of which Certificates are provided
         to Noteholders pursuant to the Sale and Servicing Agreement dated as of
         May 22, 2000 between the Registrant, AFS Funding Corp., as Seller,
         AmeriCredit Financial Services, Inc., as Servicer, and Bank One, N.A.,
         as Backup Servicer and Trust Collateral Agent (the "Agreement").



Item 7.       Financial Statements, Exhibits


<TABLE>
<CAPTION>

         Exhibit No.                Exhibit
         -----------                -------
         <S>                        <C>
            99.1                    Preliminary Servicer's Certificate and Servicer's Certificate
                                    for the July 2000 Collection Period relating to the Notes issued by
                                    the Registrant pursuant to the Agreement.


</TABLE>


<PAGE>

                                    SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.



AmeriCredit Automobile Receivables Trust 2000-B


By:  AmeriCredit Financial Services, Inc., as Servicer






/s/      Daniel E. Berce
         Daniel E. Berce
         Vice Chairman and
         Chief Financial Officer






August 14, 2000

<PAGE>

                                  EXHIBIT INDEX


<TABLE>
<CAPTION>

Exhibit
-------
<S>                      <C>
  99.1                   Preliminary Servicer's Certificate and Servicer's Certificate for
                         the July 2000 Collection Period relating to the Notes issued by
                         the Registrant.


</TABLE>