<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549
                                   -----------

                                    FORM 10-K

(MARK ONE)
[X]      ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
         EXCHANGE ACT OF 1934 [FEE REQUIRED]

For the fiscal year ended December 31, 1996

                                       OR

[ ]      TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
         EXCHANGE ACT OF 1934 [NO FEE REQUIRED]

For the transition period from ______________ to _________________

                        Commission file number: 33-99422

                        WFS FINANCIAL 1996-B OWNER TRUST
              EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

          CALIFORNIA                                 33-0149603
---------------------------------------------    -------------------
(STATE OR OTHER JURISDICTION OF INCORPORATION    (I.R.S. EMPLOYER
           OR ORGANIZATION)                      IDENTIFICATION NO.)

WFS FINANCIAL AUTO LOANS, INC.
23 PASTEUR ROAD
IRVINE, CALIFORNIA                                      92618
-----------------------------------------------         -----
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)             (ZIP CODE)

REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (714) 753-3000

SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT: NONE.

SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT: NONE.

     Indicate by check mark whether the registrant: (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes  X   No
                                              ---     ---
     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [ X ]

DOCUMENTS INCORPORATED BY REFERENCE:  None.




<PAGE>   2



ITEM 1. BUSINESS

         Not applicable.

ITEM 2. PROPERTIES

On June 14, 1996 the Commission declared effective a Registration Statement on
Form S-1 (File No. 33-99422) (the "Registration Statement") under the Securities
Act of 1933, as amended (the "Securities Act"), providing for the issuance by
the WFS Financial 1996-B Owner Trust (the "Trust") of the following securities:

   $81,500,000 of 5.52% Money Market Auto Receivable Backed Notes, Class A-1,
         $170,000,000 of 6.20% Auto Receivable Backed Notes, Class A-2,
         $155,000,000 of 6.65% Auto Receivable Backed Notes, Class A-3,
         $76,500,000 of 6.95% Auto Receivable Backed Notes, Class A-4,
           $42,000,000 of 7.05% Auto Receivable Backed Certificates.

The Class A-1 Notes, Class A-2 Notes, Class A-3 Notes, Class A-4 Notes and Class
A-5 Notes (the "Notes" and together with the Certificates, the "Securities") and
the Certificates were issued by the Trust on June 20, 1996. The Notes are
secured by the assets of the Trust, while the Certificates evidence undivided
fractional interests in the assets of the Trust. The Notes and the Certificates
were issued in fully-registered form in denominations of $1,000 and integral
multiples thereof. As more fully described in the Registration Statement, the
assets of the Trust will include (i) a pool of retail installment contracts
secured by liens on new and used automobiles and light trucks ("Contracts"),
(ii) a financial guaranty insurance policy issued by Financial Security
Assurance Inc. (the "Insurer"), and (iii) certain accounts maintained by the
Trustee on behalf of the Trust, including all investments held thereby and all
income from the investment of funds therein and all proceeds therefrom.

Information as to the number of Contracts remaining in the Trust, the aggregate
unpaid principal balance thereof, the decrease therein, delinquencies on the
Contracts, collections of principal and interest made, fees paid to the Servicer
and the amount of the Policies are set forth in the exhibits incorporated herein
in response to Item 14, below.

ITEM 3. LEGAL PROCEEDINGS

The Registrant knows of no material pending legal proceedings with respect to
the Trust involving the Trust, the Trustee, the Seller or the Servicer.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

No matter was submitted to a vote of the holders of the Certificates during the
fiscal year covered by this Report.

PART II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

As of December 31, 1996, there was one holder of record of the Securities. See
also Item 12. Security Ownership of Certain Beneficial Owners and Management.
There was no principal market in which the Securities traded.

                                     Page 2

<PAGE>   3




ITEM 6. SELECTED FINANCIAL DATA

Omitted.

ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS

Omitted.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Omitted.

ITEM 9.  DISAGREEMENTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

PART III

ITEM 10. DIRECTORS AND OFFICERS OF THE REGISTRANT

Omitted.

ITEM 11. EXECUTIVE COMPENSATION

Omitted.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The following table reflects certain information regarding holders of record
(i.e., participants in the DTC System for which Certificates are held of record
by Cede & Co.) which beneficially own more than 5% of the Certificates. The
Registrant does not have any information as to whether the persons listed below
hold such Certificates for their own account, partially for their own account
and partial for the account of others or solely for the account of others.

Name and Address         Amount of Certificates         Percent of Certificates
of Participant           Beneficially Owned             Beneficially Owned
--------------           ------------------             ------------------

Bank of New York             33,390,000                           80.3%
Bankers Trust Company         5,000,000                           12.0%

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

There have not been any transactions or series of transactions since the start
of the Trusts last fiscal year between the Trust and any Certificateholder which
is the beneficial owner of more than 5% of the Certificates, based upon the
outstanding balance of the certificates.

ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K

(a)      The following documents are filed as part of this Report:

                                     Page 3

<PAGE>   4




Exhibit Number  Description
--------------  -----------

    20.1        Current Report on Form 8-K for the for the August 20, 1996
                Distribution Date (incorporated herein by reference to the WFS
                Financial 1996-B Owner Trust Form 8-K filed on August 27, 1996,
                file number 33-99422)

    20.2        Current Report on Form 8-K for the for the November 20, 1996
                Distribution Date (incorporated herein by reference to the WFS
                Financial 1996-B Owner Trust Form 8-K filed on November 25,
                1996, file number 33- 99422)

    20.3        Current Report on Form 8-K for the for the February 20, 1997
                Distribution Date (incorporated herein by reference to the WFS
                Financial 1996-B Owner Trust Form 8-K filed on February 28,
                1997, file number 33-99422)

    20.4        Accountants' Report dated January 28, 1997

    20.5        Annual Statement of Compliance by Master Servicer dated January
                24, 1997

    20.6        Annual Statements to Securityholders for the Service Period 1996

    20.7        consolidated financial statements of Financial Security
                Assurance Inc. and subsidiaries as of December 31, 1996 and
                1995, and for each of the three years in the period ended
                December 31, 1996 (Incorporate by reference from the Annual
                Report on Form 10-K of Financial Security Assurance Holdings
                Inc. for the year ended December 31, 1996 (file # 1-12644) as
                filed on or about March 24, 1997)

    23          Written Consent of Coopers & Lybrand, LLP


(b)  Reports on Form 8-K: All reports filed on Form 8-K required to be disclosed
     are identified above in response to Item 14(a).

(c)  Omitted.

(d)  Omitted.


                                     Page 4

<PAGE>   5



                                   SIGNATURES

          Pursuant to the requirements of Section 13 or 15(d) 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.

                                 WFS FINANCIAL 1996-B OWNER TRUST

                                 BY: WFS FINANCIAL INC, as Master Servicer


Date:    March 31, 1997          By: /S/ LEE A. WHATCOTT
                                    ---------------------------------------
                                    Lee A. Whatcott, Chief Financial Officer




                                     Page 5

<PAGE>   6



                                INDEX TO EXHIBITS
<TABLE>
<CAPTION>
Exhibit No.            Description                                            Page
-----------            -----------                                            ----

<S>          <C>                                                            <C>
    20.1     Current Report on Form 8-K for the for the August 20, 1996
             Distribution Date (incorporated herein by reference to the WFS
             Financial 1996-B Owner Trust Form 8-K filed on August 27, 1996,
             file number 33-99422)

    20.2     Current Report on Form 8-K for the for the November 20, 1996
             Distribution Date (incorporated herein by reference to the WFS
             Financial 1996-B Owner Trust Form 8-K filed on November 25, 1996,
             file number 33-99422)

    20.3     Current Report on Form 8-K for the for the February 20, 1997
             Distribution Date (incorporated herein by reference to the WFS
             Financial 1996-B Owner Trust Form 8-K filed on February 28, 1997,
             file number 33-99422)

    20.4     Accountants' Report dated January 28, 1997

    20.5     Annual Statement of Compliance by Master Servicer dated
             January 24, 1997

    20.6     Annual Statements to Securityholders for the Service Period 1996

    20.7     consolidated financial statements of Financial Security Assurance
             Inc. and subsidiaries as of December 31, 1996 and 1995, and for
             each of the three years in the period ended December 31, 1996
             (Incorporate by reference from the Annual Report on Form 10-K of
             Financial Security Assurance Holdings Inc. for the year ended
             December 31, 1996 (file # 1-12644) as filed on or about March 24,
             1997)

    23       Written Consent of Coopers & Lybrand, LLP
</TABLE>



                                     Page 6