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Exhibit 10.2.1 - Form of Administration Agreement


                      CARMAX AUTO OWNER TRUST 20[__]-[__],
                                   as Issuer,

                         CARMAX AUTO SUPERSTORES, INC.,
                                as Administrator,

                                       and

                             [____________________],
                              as Indenture Trustee


                                   ----------

                            ADMINISTRATION AGREEMENT
                        Dated as of [__________], 20[__]


                                   ----------

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          ADMINISTRATION AGREEMENT, dated as of [__________], 20[__] (as
amended, supplemented or otherwise modified and in effect from time to time,
this "Agreement"), by and among CARMAX AUTO OWNER TRUST 20[__]-[__], a Delaware
statutory trust (the "Issuer"), CARMAX AUTO SUPERSTORES, INC., a Virginia
corporation, as administrator (in such capacity, the "Administrator"), and
[____________________], a [____________________], not in its individual capacity
but solely as indenture trustee (in such capacity, the "Indenture Trustee").

          WHEREAS, the Issuer is issuing [____]% Class A-1 Asset-Backed Notes,
[____]% Class A-2 Asset-Backed Notes, [____]% Class A-3 Asset-Backed Notes,
[____]% Class A-4 Asset-Backed Notes, [____]% Class B Asset-Backed Notes and
[___]% Class C Asset-Backed Notes (collectively, the "Notes") pursuant to the
Indenture, dated as of [__________], 20[__] (as amended, supplemented or
otherwise modified and in effect from time to time, the "Indenture"), between
the Issuer and the Indenture Trustee;

          WHEREAS, the Issuer has entered into certain agreements in connection
with the issuance of the Notes and the issuance of certain beneficial interests
in the Issuer, including (i) a Sale and Servicing Agreement, dated as of
[__________], 20[__] (as amended, supplemented or otherwise modified and in
effect from time to time, the "Sale and Servicing Agreement"), by and among the
Issuer, CarMax Auto Funding LLC, a Delaware limited liability company, as
depositor (in such capacity, the "Depositor"), and CarMax Auto Superstores,
Inc., as servicer, (ii) a Letter of Representations, dated [__________], 20[__]
(as amended, supplemented or otherwise modified and in effect from time to time,
the "Note Depository Agreement"), by and among the Issuer, the Indenture Trustee
and The Depository Trust Company relating to the Notes and (iii) the Indenture
(collectively with the Sale and Servicing Agreement and the Note Depository
Agreement, the "Related Agreements");

          WHEREAS, pursuant to the Related Agreements, the Issuer and
[____________________], a [____________________], not in its individual capacity
but solely as owner trustee (in such capacity, the "Owner Trustee"), are
required to perform certain duties in connection with (i) the Notes and the
collateral pledged to secure the Notes pursuant to the Indenture (the
"Collateral") and (ii) the beneficial interests in the Issuer;

          WHEREAS, the Issuer and the Owner Trustee desire to have the
Administrator perform certain of the duties of the Issuer and the Owner Trustee
referred to in the preceding clause and to provide such additional services
consistent with the terms of this Agreement and the Related Agreements as the
Issuer and the Owner Trustee may from time to time request; and

          WHEREAS, the Administrator has the capacity to provide the services
required hereby and is willing to perform such services for the Issuer and the
Owner Trustee on the terms set forth herein;

          NOW, THEREFORE, in consideration of the mutual covenants contained
herein and other good and valuable consideration, the receipt and sufficiency of
which are hereby acknowledged, the parties hereto agree as follows:

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          SECTION 1.   Definitions. All capitalized terms used but not defined
in this Agreement shall have the respective meanings set forth in the Indenture.

          SECTION 2.   Duties of the Administrator.

          (a)  Duties with Respect to the Related Agreements.

               (i)   The Administrator shall perform all its duties as
     Administrator under the Note Depository Agreement. In addition, the
     Administrator shall consult with the Owner Trustee regarding the duties of
     the Issuer or the Owner Trustee under the Related Agreements. The
     Administrator shall monitor the performance of the Issuer and shall advise
     the Owner Trustee when action is necessary to comply with the Issuer's or
     the Owner Trustee's duties under the Related Agreements. The Administrator
     shall prepare for execution by the Issuer or the Owner Trustee, or shall
     cause the preparation by other appropriate persons of, all such documents,
     reports, filings, instruments, certificates and opinions that it shall be
     the duty of the Issuer or the Owner Trustee to prepare, file or deliver
     pursuant to the Related Agreements. In furtherance of the foregoing, the
     Administrator shall take all appropriate action that the Issuer or the
     Owner Trustee is obligated to take pursuant to the Indenture, including,
     without limitation, such of the foregoing as are required with respect to
     the following matters under the Indenture (references are to sections of
     the Indenture):

                    (A)  the duty to cause the Note Register to be kept and to
          give the Indenture Trustee notice of any appointment of a new Note
          Registrar and the location, or change in location, of the Note
          Register (Section 2.5);

                    (B)  the notification of Noteholders of the final principal
          payment on their Notes (Section 2.8(e));

                    (C)  the preparation of or obtaining of the documents and
          instruments required for authentication of the Notes and delivery of
          the same to the Indenture Trustee (Section 2.2, 2.3, 2.6 and 2.13);

                    (D)  the preparation, obtaining or filing of the
          instruments, opinions, certificates and other documents required for
          the release of collateral (Section 2.10);

                    (E)  the maintenance of an office or agency in the Borough
          of Manhattan, The City of New York, where Notes may be surrendered for
          registration of transfer or exchange (Section 3.2);

                    (F)  the duty to cause newly appointed Paying Agents, if
          any, to deliver to the Indenture Trustee the instrument specified in
          the Indenture regarding funds held in trust (Section 3.3);

                    (G)  the direction to the Indenture Trustee to deposit
          monies with Paying Agents, if any, other than the Indenture Trustee
          (Section 3.3);

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                    (H)  the obtaining and preservation of the Issuer's
          qualification to do business in each jurisdiction in which such
          qualification is or shall be necessary to protect the validity and
          enforceability of the Indenture, the Notes, the Collateral and each
          other instrument or agreement included in the Trust Estate (Section
          3.4);

                    (I)  the preparation of all supplements and amendments to
          the Indenture and all financing statements, continuation statements,
          instruments of further assurance and other instruments and the taking
          of such other action as is necessary or advisable to protect the Trust
          Estate (Section 3.5);

                    (J)  the delivery of the Opinion of Counsel on the Closing
          Date and the annual delivery of Opinions of Counsel as to the Trust
          Estate, and the annual delivery of the Officer's Certificate and
          certain other statements as to compliance with the Indenture (Sections
          3.6 and 3.9);

                    (K)  the identification to the Indenture Trustee in an
          Officer's Certificate of a Person with whom the Issuer has contracted
          to perform its duties under the Indenture (Section 3.7(b));

                    (L)  the preparation and delivery of written notice to the
          Indenture Trustee and the Rating Agencies of an Event of Servicing
          Termination under the Sale and Servicing Agreement and, if such Event
          of Servicing Termination arises from the failure of the Servicer to
          perform any of its duties or obligations under the Sale and Servicing
          Agreement with respect to the Receivables, the taking of all
          reasonable steps available to remedy such failure (Section 3.7(d));

                    (M)  the duty to cause the Servicer to comply with Sections
          3.7, 3.9, 3.10, 3.11, 3.12, 3.13 and 3.14 and Article VII of the Sale
          and Servicing Agreement (Section 3.14);

                    (N)  the preparation and obtaining of documents and
          instruments required for the conveyance or transfer by the Issuer of
          its properties or assets (Section 3.10(b));

                    (O)  the preparation and delivery of written notice to the
          Indenture Trustee and the Rating Agencies of each Event of Default
          under the Indenture and each default by the Depositor or the Servicer
          under the Sale and Servicing Agreement or by the Seller or the
          Depositor under the Receivables Purchase Agreement (Section 3.18);

                    (P)  the monitoring of the Issuer's obligations as to the
          satisfaction and discharge of the Indenture and the preparation of an
          Officer's Certificate and the obtaining of the Opinion of Counsel and
          the Independent Certificate relating thereto (Section 4.1);

                    (Q)  the compliance with any written directive of the
          Indenture Trustee with respect to the sale of the Trust Estate at one
          or more public or private

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          sales called and conducted in any manner permitted by law if an Event
          of Default shall have occurred and be continuing under the Indenture
          (Section 5.4);

                    (R)  the preparation and delivery of written notice to the
          Noteholders of the removal of the Indenture Trustee and the
          appointment of a successor Indenture Trustee (Section 6.8);

                    (S)  the preparation of any written instruments required to
          confirm more fully the authority of any co-trustee or separate trustee
          and any written instruments necessary in connection with the
          resignation or removal of any co-trustee or separate trustee (Section
          6.10);

                    (T)  the furnishing to the Indenture Trustee of the names
          and addresses of Noteholders during any period when the Indenture
          Trustee is not the Note Registrar (Section 7.1);

                    (U)  the preparation and, after execution by the Issuer,
          filing with the Commission, any applicable state agencies and the
          Indenture Trustee of documents required to be filed on a periodic
          basis with, and summaries thereof as may be required by the rules and
          regulations of, the Commission and any applicable state agencies and
          the transmission of such summaries, as necessary, to the Noteholders
          (Section 7.3);

                    (V)  the opening of one or more accounts in the Issuer's
          name, the preparation and delivery of Issuer Orders, Officer's
          Certificates and Opinions of Counsel and all other actions necessary
          with respect to the investment and reinvestment of funds in the
          Collection Account and the Reserve Account (Sections 8.2 and 8.3);

                    (W)  the preparation and delivery of an Issuer Request and
          Officer's Certificate and the obtaining of an Opinion of Counsel and
          Independent Certificates, if necessary, for the release of the Trust
          Estate (Sections 8.4 and 8.5);

                    (X)  the preparation and delivery of Issuer Orders and the
          obtaining of an Opinion of Counsel with respect to the execution of
          supplemental indentures and the mailing to the Noteholders and the
          Rating Agencies, as applicable, of notices with respect to such
          supplemental indentures (Sections 9.1, 9.2 and 9.3);

                    (Y)  the execution and delivery of new Notes conforming to
          any supplemental indenture (Section 9.6);

                    (Z)  the duty to notify Noteholders of redemption of the
          Notes or to cause the Indenture Trustee to provide such notification
          (Section 10.2);

                    (AA) the preparation and delivery of Officer's Certificates
          and the obtaining of an Opinion of Counsel and Independent
          Certificates, if necessary, with respect to any requests by the Issuer
          to the Indenture Trustee to take any action under the Indenture
          (Section 11.1(a));

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                    (BB) the preparation and delivery of Officer's Certificates
          and the obtaining of Opinions of Counsel and Independent Certificates,
          if necessary, for the release of property from the lien of the
          Indenture (Section 11.1(b));

                    (CC) the preparation and delivery of written notice to the
          Rating Agencies, upon the failure of the Indenture Trustee to give
          such notification, of the information required pursuant to the
          Indenture (Section 11.4);

                    (DD) the preparation and delivery to the Noteholders and the
          Indenture Trustee of any agreements with respect to alternate payment
          and notice provisions (Section 11.6);

                    (EE) the recording of the Indenture, if applicable (Section
          11.15); and

                    (FF) the preparation of Definitive Notes in accordance with
          the instructions of the Clearing Agency (Section 2.13).

               (ii)   The Administrator shall:

                    (A)  pay the Indenture Trustee from time to time such
          compensation and fees for all services rendered by the Indenture
          Trustee under the Indenture as have been agreed to in a separate fee
          schedule between the Administrator and the Indenture Trustee (which
          compensation shall not be limited by any provision of law in regard to
          the compensation of a trustee of an express trust);

                    (B)  except as otherwise expressly provided in the
          Indenture, reimburse the Indenture Trustee upon its request for all
          reasonable expenses, disbursements and advances incurred or made by
          the Indenture Trustee in accordance with any provision of the
          Indenture (including the reasonable compensation, expenses and
          disbursements of its agents and counsel), except any such expense,
          disbursement or advance as may be attributable to its negligence or
          bad faith;

                    (C)  indemnify the Indenture Trustee and its agents for, and
          hold them harmless against, any loss, liability or expense incurred
          without negligence or bad faith on their part arising out of or in
          connection with the acceptance or administration of the transactions
          contemplated by the Indenture, including the reasonable costs and
          expenses of defending themselves against any claim or liability in
          connection with the exercise or performance of any of their powers or
          duties under the Indenture; and

                    (D)  indemnify the Owner Trustee and its agents for, and
          hold them harmless against, any loss, liability or expense incurred
          without negligence or bad faith on their part arising out of or in
          connection with the acceptance or administration of the transactions
          contemplated by the Trust Agreement, including the reasonable costs
          and expenses of defending themselves against any claim or liability in
          connection with the exercise or performance of any of their powers or
          duties under the Trust Agreement.

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          (b)  Additional Duties.

               (i)   In addition to the duties of the Administrator set forth
     above, the Administrator shall perform such calculations and shall prepare
     or shall cause the preparation by other appropriate persons of, and shall
     execute on behalf of the Issuer or the Owner Trustee, all such documents,
     reports, filings, instruments, certificates and opinions that the Issuer or
     the Owner Trustee is obligated to prepare pursuant to the Related
     Agreements or Section 5.5(i), (ii), (iii) or (iv) of the Trust Agreement,
     and at the request of the Owner Trustee shall take all appropriate action
     that the Issuer or the Owner Trustee is obligated to take pursuant to the
     Related Agreements. In furtherance of the foregoing, the Owner Trustee
     shall, on behalf of itself and the Issuer, execute and deliver to the
     Administrator and to each successor Administrator appointed pursuant to the
     terms hereof, one or more powers of attorney substantially in the form of
     Exhibit A hereto, appointing the Administrator the attorney-in-fact of the
     Owner Trustee and the Issuer for the purpose of executing on behalf of the
     Owner Trustee and the Issuer all such documents, reports, filings,
     instruments, certificates and opinions. Subject to Section 6 of this
     Agreement, and in accordance with the directions of the Owner Trustee, the
     Administrator shall administer, perform or supervise the performance of
     such other activities in connection with the Collateral (including the
     Related Agreements) as are not covered by any of the foregoing provisions
     and as are expressly requested by the Owner Trustee and are reasonably
     within the capability of the Administrator.

               (ii)  Notwithstanding anything in this Agreement or the Related
     Agreements to the contrary, the Administrator shall be responsible for
     promptly notifying the Owner Trustee in the event that any withholding tax
     is imposed on the Issuer's payments (or allocations of income) to a
     registered holder of the beneficial interests in the Issuer as contemplated
     in Section 5.2(c) of the Trust Agreement. Any such notice shall specify the
     amount of any withholding tax required to be withheld by the Owner Trustee
     pursuant to such provision.

               (iii) Notwithstanding anything in this Agreement or the
     Transaction Documents to the contrary, the Administrator shall be
     responsible for performance of the duties of the Issuer or the Owner
     Trustee set forth in Section 5.5(i), (ii), (iii) and (iv) and Section
     5.6(a) of the Trust Agreement with respect to, among other things,
     accounting and reports to the beneficial owners of the interests in the
     Issuer.

               (iv)  The Administrator shall deliver to the Owner Trustee and
     the Indenture Trustee, on or before February 15, 20[__], a certificate of
     an Authorized Officer in form and substance satisfactory to the Owner
     Trustee as to whether any tax withholding is then required and, if
     required, the procedures to be followed with respect thereto to comply with
     the requirements of the Code. The Administrator shall update such
     certificate if any additional tax withholding is subsequently required or
     any previously required tax withholding shall no longer be required.

               (v)   The Administrator shall perform the duties of the
     Administrator specified in Section 10.2 of the Trust Agreement required to
     be performed in connection with the resignation or removal of the Owner
     Trustee, and any other duties expressly

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     required to be performed by the Administrator under the Trust Agreement or
     any other Related Agreement.

               (vi)  In carrying out the foregoing duties or any of its other
     obligations under this Agreement, the Administrator may enter into
     transactions or otherwise deal with any of its affiliates; provided,
     however, that the terms of any such transactions or dealings shall be in
     accordance with any directions received from the Issuer and shall be, in
     the Administrator's opinion, no less favorable to the Issuer than would be
     available from unaffiliated parties.

          (c)  Non-Ministerial Matters.

               (i)   The Administrator shall not take any action with respect
     to matters that, in the reasonable judgment of the Administrator, are
     non-ministerial unless within a reasonable time before the taking of such
     action the Administrator shall have notified the Issuer of the proposed
     action and the Issuer shall not have withheld consent, which consent shall
     not be unreasonably withheld or delayed, or provided an alternative
     direction. For the purpose of the preceding sentence, "non-ministerial"
     matters shall include, without limitation:

                    (A)  the amendment of or any supplement to the Indenture;

                    (B)  the initiation of any claim or lawsuit by the Issuer or
          the compromise of any action, claim or lawsuit brought by or against
          the Issuer (other than in connection with the collection of the
          Receivables or Permitted Investments);

                    (C)  the amendment, change or modification of the Related
          Agreements;

                    (D)  the appointment of successor Note Registrars, successor
          Paying Agents or successor Indenture Trustees pursuant to the
          Indenture, the appointment of successor Administrators or Successor
          Servicers or the consent to the assignment by the Note Registrar, the
          Paying Agent or the Indenture Trustee of its obligations under the
          Indenture; and

                    (E) the removal of the Indenture Trustee.

               (ii)  Notwithstanding anything to the contrary in this
     Agreement, the Administrator shall not be obligated to, and shall not, (A)
     make any payments to the Noteholders under the Related Agreements or (B)
     take any other action that the Issuer directs the Administrator not to take
     on its behalf.

          SECTION 3.   Records. The Administrator shall maintain appropriate
books of account and records relating to services performed hereunder, which
books of account and records shall be accessible for inspection by the Issuer
and the Company at any time during normal business hours.

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          SECTION 4.   Compensation. As compensation for the performance of the
Administrator's obligations under this Agreement, and as reimbursement for its
expenses related thereto, the Administrator shall be entitled to $500 per month,
which compensation shall be solely an obligation of the Servicer.

          SECTION 5.   Additional Information to be Furnished to the Issuer. The
Administrator shall furnish to the Issuer from time to time such additional
information regarding the Collateral as the Issuer may reasonably request.

          SECTION 6.   Independence of the Administrator. For all purposes of
this Agreement, the Administrator shall be an independent contractor and shall
not be subject to the supervision of the Issuer or the Owner Trustee with
respect to the manner in which it accomplishes the performance of its
obligations hereunder. Unless expressly authorized by the Issuer, the
Administrator shall have no authority to act for or represent the Issuer or the
Owner Trustee in any way and shall not otherwise be deemed an agent of the
Issuer or the Owner Trustee.

          SECTION 7.   No Joint Venture. Nothing contained in this Agreement
(i) shall constitute the Administrator and either the Issuer or the Owner
Trustee as members of any partnership, joint venture, association, syndicate,
unincorporated business or other separate entity, (ii) shall be construed to
impose any liability as such on any of them or (iii) shall be deemed to confer
on any of them any express, implied or apparent authority to incur any
obligation or liability on behalf of the others.

          SECTION 8.   Other Activities of Administrator. Nothing contained in
this Agreement shall prevent the Administrator or its affiliates from engaging
in other businesses or, in its sole discretion, from acting in a similar
capacity as an administrator for any other person or entity even though such
person or entity may engage in business activities similar to those of the
Issuer, the Owner Trustee or the Indenture Trustee.

          SECTION 9.   Term of Agreement; Resignation and Removal of
Administrator.

          (a)  This Agreement shall continue in full force and effect until the
dissolution of the Issuer, upon which event this Agreement shall automatically
terminate.

          (b)  Subject to Sections 9(e) and 9(f), the Administrator may resign
its duties hereunder by providing the Issuer with at least sixty (60) days'
prior written notice.

          (c)  Subject to Sections 9(e) and 9(f), the Issuer may remove the
Administrator without cause by providing the Administrator with at least sixty
(60) days' prior written notice.

          (d)  Subject to Sections 9(e) and 9(f), at the sole option of the
Issuer, the Issuer may remove the Administrator immediately upon written notice
of termination from the Issuer to the Administrator if any of the following
events shall occur and be continuing:

               (i)   the Administrator shall default in the performance of any
     of its duties under this Agreement and, after notice of such default, shall
     not cure such default within

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     ten (10) days (or, if such default cannot be cured in such time, shall not
     give within ten (10) days such assurance of cure as shall be reasonably
     satisfactory to the Issuer);

               (ii)  a court having jurisdiction in the premises shall enter a
     decree or order for relief, and such decree or order shall not have been
     vacated within sixty (60) days, in respect of the Administrator in any
     involuntary case under any applicable bankruptcy, insolvency or other
     similar law now or hereafter in effect or appoint a receiver, liquidator,
     assignee, trustee, custodian, sequestrator or other similar official for
     the Administrator or any substantial part of its property or order the
     winding-up or liquidation of its affairs; or

               (iii) the Administrator shall commence a voluntary case under
     any applicable bankruptcy, insolvency or other similar law now or hereafter
     in effect, shall consent to the entry of an order for relief in an
     involuntary case under any such law, shall consent to the appointment of a
     receiver, liquidator, assignee, trustee, custodian, sequestrator or other
     similar official for the Administrator or any substantial part of its
     property, shall consent to the taking of possession by any such official of
     any substantial part of its property, shall make any general assignment for
     the benefit of creditors or shall fail generally to pay its debts as they
     become due.

          If any of the events specified in clauses (ii) or (iii) of this
Section 9(d) shall occur, the Administrator shall give written notice thereof to
the Issuer and the Indenture Trustee within seven (7) days after the occurrence
of such event.

          (e)  No resignation or removal of the Administrator pursuant to
Section 9(d) shall be effective until (i) a successor Administrator shall have
been appointed by the Issuer and (ii) such successor Administrator shall have
agreed in writing to be bound by the terms of this Agreement in the same manner
as the Administrator is bound hereunder.

          (f)  The appointment of any successor Administrator shall be effective
only after satisfaction of the Rating Agency Condition with respect to such
appointment.

          (g)  Subject to Sections 9(e) and 9(f), the Administrator acknowledges
that upon the appointment of a Successor Servicer pursuant to the Sale and
Servicing Agreement the Administrator shall immediately resign and such
Successor Servicer shall automatically become the Administrator under this
Agreement.

          SECTION 10.  Action upon Termination, Resignation or Removal.
Promptly upon the effective date of termination of this Agreement pursuant to
Section 9(a), the resignation of the Administrator pursuant to Section 9(b) or
the removal of the Administrator pursuant to Section 9(c) or (d), the
Administrator shall be entitled to be paid all fees and reimbursable expenses
accruing to it to the date of such termination, resignation or removal. The
Administrator shall forthwith upon such termination pursuant to Section 9(a)
deliver to the Issuer all property and documents of or relating to the
Collateral then in the custody of the Administrator. In the event of the
resignation of the Administrator pursuant to Section 9(b) or the removal of the
Administrator pursuant to Section 9(c) or (d), the Administrator shall cooperate
with the Issuer and take all reasonable steps requested by the Issuer to assist
the Issuer in making an orderly transfer of the duties of the Administrator.

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          SECTION 11. Notices. All demands, notices and other communications
under this Agreement shall be in writing, personally delivered, sent by
telecopier, overnight courier or mailed by certified mail, return receipt
requested, and shall be deemed to have been duly given upon receipt (i) in the
case of the Issuer, to CarMax Auto Owner Trust 20[__]-[__] c/o the Owner Trustee
at the following address: [____________________], [____________________],
Attention: [____________________], (ii) in the case of the Administrator, at the
following address: 4900 Cox Road, Glen Allen, Virginia 23060, Attention:
Treasury Department, and (iii) in the case of the Indenture Trustee, at the
following address: [____________________], [____________________], Attention:
[____________________], or, in each case, to such other address as any party
shall have provided to the other parties in writing.

          SECTION 12. Amendments. This Agreement may be amended from time to
time by the Issuer, the Administrator and the Indenture Trustee, without the
consent of any of the Noteholders or the Certificateholders, to cure any
ambiguity, to correct or supplement any provision herein that may be
inconsistent with any other provision herein or for the purpose of adding any
provisions to or changing in any manner or eliminating any of the provisions of
this Agreement which will not be inconsistent with other provisions of this
Agreement; provided, however, that no such amendment may materially adversely
affect the interests of any Noteholder or Certificateholder. This Agreement may
also be amended from time to time by the Issuer, the Administrator and the
Indenture Trustee, with the consent of the Holders of Notes evidencing not less
than 51% of the Note Balance of the Controlling Class or, if the Notes have been
paid in full, the Holders of Certificates evidencing not less than 51% of the
aggregate Certificate Percentage Interest, for the purpose of adding any
provisions to, or changing in any manner or eliminating any of the provisions
of, this Agreement or modifying in any manner the rights of the Noteholders or
the Certificateholders; provided, however, that no such amendment may:

               (i)   increase or reduce in any manner the amount of, or
     accelerate or delay the timing of, collections of payments on or in respect
     of the Receivables or distributions that are required to be made for the
     benefit of the Noteholders or the Certificateholders without the consent of
     all Noteholders and Certificateholders adversely affected by such
     amendment; or

               (ii)  reduce the percentage of the Note Balance or the
     percentage of the aggregate Certificate Percentage Interest the consent of
     the Holders of which is required for any amendment to this Agreement
     without the consent of all the Noteholders and Certificateholders adversely
     affected by such amendment.

          An amendment to this Agreement shall be deemed not to materially
adversely affect the interests of any Noteholder or Certificateholder if the
Person requesting such amendment obtains and delivers to the Owner Trustee and
the Indenture Trustee an Opinion of Counsel to that effect or the Rating Agency
Condition is satisfied. Notwithstanding the foregoing, the Administrator may not
amend this Agreement without the consent of the Depositor, which consent shall
not be unreasonably withheld.

          SECTION 13. Successors and Assigns. This Agreement may not be
assigned by the Administrator unless such assignment is previously consented to
in writing by the Issuer

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and the Owner Trustee and the Rating Agency Condition has been satisfied with
respect to such assignment. An assignment with such consent and satisfaction, if
accepted by the assignee, shall bind the assignee hereunder in the same manner
as the Administrator is bound hereunder. Notwithstanding the foregoing, this
Agreement may be assigned by the Administrator without the consent of the Issuer
or the Owner Trustee to a corporation or other organization that is a successor
(by merger, consolidation or purchase of assets) to the Administrator; provided,
however, that such successor organization executes and delivers to the Issuer,
the Owner Trustee and the Indenture Trustee an agreement in which such
corporation or other organization agrees to be bound hereunder by the terms of
such assignment in the same manner as the Administrator is bound hereunder.
Subject to the foregoing, this Agreement shall bind any successors or assigns of
the parties hereto.

          SECTION 14. GOVERNING LAW. THIS AGREEMENT SHALL BE CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, AND THE OBLIGATIONS, RIGHTS
AND REMEDIES OF THE PARTIES UNDER THIS AGREEMENT SHALL BE DETERMINED IN
ACCORDANCE WITH SUCH LAWS WITHOUT GIVING EFFECT TO THE CONFLICTS OF LAWS
PROVISIONS THEREOF WHICH MAY REQUIRE THE APPLICATION OF THE LAWS OF ANY OTHER
JURISDICTION (OTHER THAN SECTION 5-1401 OF THE NEW YORK GENERAL OBLIGATION LAW).

          SECTION 15. Counterparts. This Agreement may be executed in two or
more counterparts and by different parties on separate counterparts, each of
which shall be an original, but all of which together shall constitute but one
and the same instrument.

          SECTION 16. Severability. If any provision of this Agreement shall be
invalid, illegal or unenforceable, the validity, legality, and enforceability of
the remaining provisions of this Agreement shall not in any way be affected or
impaired thereby.

          SECTION 17. Not Applicable to CarMax Auto Superstores, Inc. in Other
Capacities. Nothing in this Agreement shall affect any obligation CarMax Auto
Superstores, Inc. may have in any other capacity.

          SECTION 18. Limitation of Liability of Owner Trustee and Indenture
Trustee.

          (a)  Notwithstanding anything contained herein to the contrary, this
Agreement has been countersigned by the Owner Trustee not in its individual
capacity but solely in its capacity as Owner Trustee of the Issuer, and in no
event shall the Owner Trustee in its individual capacity have any liability for
the representations, warranties, covenants, agreements or other obligations of
the Issuer hereunder or in any of the certificates, notices or agreements
delivered pursuant hereto, as to all of which recourse shall be had solely to
the assets of the Issuer. For all purposes of this Agreement, in the performance
of any duties or obligations of the Issuer hereunder, the Owner Trustee shall be
subject to, and entitled to the benefits of, the terms and provisions of
Articles VI, VII and VIII of the Trust Agreement.

          (b)  Notwithstanding anything contained herein to the contrary, this
Agreement has been countersigned by the Indenture Trustee not in its individual
capacity but

                                       11

<PAGE>

solely as Indenture Trustee, and in no event shall the Indenture Trustee in its
individual capacity have any liability for the representations, warranties,
covenants, agreements or other obligations of the Issuer hereunder or in any of
the certificates, notices or agreements delivered pursuant hereto, as to all of
which recourse shall be had solely to the assets of the Issuer.

          SECTION 19. Third-Party Beneficiary. The Owner Trustee is a
third-party beneficiary of this Agreement and is entitled to the rights and
benefits hereunder and may enforce the provisions hereof as if it were a party
hereto.

          SECTION 20. Successor Servicer and Administrator. The Administrator
shall undertake, as promptly as possible after the giving of notice of
termination to the Servicer of the Servicer's rights and powers pursuant to
Section 8.2 of the Sale and Servicing Agreement, to enforce the provisions of
such Section 8.2 with respect to the appointment of a successor Servicer. Such
successor Servicer shall, upon compliance with the second to last sentence of
Section 8.2 of the Sale and Servicing Agreement, become the successor
Administrator hereunder; provided, however, that if the Indenture Trustee shall
become such successor Administrator, the Indenture Trustee shall not be required
to perform any obligations or duties or conduct any activities as successor
Administrator that would be prohibited by law and not within the banking and
trust powers of the Indenture Trustee. In such event, the Indenture Trustee may
appoint a sub-administrator to perform such obligations and duties. Any transfer
of servicing pursuant to Section 8.2 of the Sale and Servicing Agreement and
related succession as Administrator hereunder shall not constitute an assumption
by the related successor Administrator of any liability of the related outgoing
Administrator arising out of any breach by such outgoing Administrator of such
outgoing Administrator's duties hereunder prior to such transfer.

          SECTION 21. Nonpetition Covenants.

          (a)  Notwithstanding any prior termination of this Agreement, the
Depositor, the Administrator, the Owner Trustee and the Indenture Trustee shall
not at any time acquiesce, petition or otherwise invoke or cause the Issuer to
invoke the process of any court or government authority for the purpose of
commencing or sustaining a case against the Issuer under any federal or state
bankruptcy, insolvency or similar law or appointing a receiver, liquidator,
assignee, trustee, custodian, sequestrator or other similar official of the
Issuer or any substantial part of its property, or ordering the winding up or
liquidation of the affairs of the Issuer.

          (b)  Notwithstanding any prior termination of this Agreement, the
Issuer, the Administrator, the Owner Trustee and the Indenture Trustee shall not
at any time acquiesce, petition or otherwise invoke or cause the Depositor to
invoke the process of any court or government authority for the purpose of
commencing or sustaining a case against the Depositor under any federal or state
bankruptcy, insolvency or similar law or appointing a receiver, liquidator,
assignee, trustee, custodian, sequestrator or other similar official of the
Depositor or any substantial part of its property, or ordering the winding up or
liquidation of the affairs of the Depositor.

                            [SIGNATURE PAGE FOLLOWS]

                                       12

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed by their respective officers, thereunto duly authorized, all as
of the day and year first above written.

                                          CARMAX AUTO OWNER TRUST 20[__]-[__]


                                          By: [____________________],
                                          not in its individual capacity but
                                          solely as Owner Trustee


                                          By:
                                             -----------------------------------
                                             Name:
                                             Title:


                                          [--------------------],
                                          not in its individual capacity but
                                          solely as Indenture Trustee


                                          By:
                                             -----------------------------------
                                             Name:
                                             Title:


                                          CARMAX AUTO SUPERSTORES, INC.,
                                          as Administrator


                                          By:
                                             -----------------------------------
                                             Name:
                                             Title:


                                      S-1
Administration Agreement

<PAGE>

                                                                       EXHIBIT A

                                POWER OF ATTORNEY

STATE OF NEW YORK        )
                         )
COUNTY OF NEW YORK       )

          KNOW ALL MEN BY THESE PRESENTS, that [____________________], a
[____________________], not in its individual capacity but solely as owner
trustee (the "Owner Trustee") for CarMax Auto Owner Trust 20[__]-[__], a
Delaware statutory trust (the "Issuer"), does hereby make, constitute and
appoint CARMAX AUTO SUPERSTORES, INC., a Virginia corporation (the
"Administrator"), as administrator under the Administration Agreement dated as
of [__________], 20[__] (the "Administration Agreement"), among the Issuer, the
Administrator and [____________________], a [____________________], as Indenture
Trustee, as the same may be amended from time to time, and its agents and
attorneys, as attorneys-in-fact to execute on behalf of the Owner Trustee or the
Issuer all such documents, reports, filings, instruments, certificates and
opinions as the Owner Trustee or the Issuer is obligated to prepare, file or
deliver pursuant to the Related Agreements or pursuant to Section 5.5(i), (ii),
(iii) or (iv) of the Trust Agreement, including, without limitation, to appear
for and represent the Owner Trustee and the Issuer in connection with the
preparation, filing and audit of federal, state and local tax returns pertaining
to the Issuer, and with full power to perform any and all acts associated with
such returns and audits that the Owner Trustee could perform, including without
limitation, the right to distribute and receive confidential information, defend
and assert positions in response to audits, initiate and defend litigation, and
to execute waivers of restrictions on assessments of deficiencies, consents to
the extension of any statutory or regulatory time limit and settlements. All
powers of attorney for this purpose heretofore filed or executed by the Owner
Trustee are hereby revoked. All capitalized terms used but not defined in this
power of attorney shall have the respective meanings set forth in the
Administration Agreement.

                                      A-1

<PAGE>

                EXECUTED this [___] day of [__________], 20[__].


                                          [--------------------],
                                          not in its individual capacity but
                                          solely as Owner Trustee


                                          By:
                                             -----------------------------------
                                             Name:
                                             Title:


STATE OF NEW YORK        )
                         ) ss.:
COUNTY OF ___________    )

          BEFORE ME, the undersigned authority, a Notary Public in and for said
county and state, on this day personally appeared ____________________, known to
me to be the person and officer whose name is subscribed to the foregoing
instrument, and acknowledged to me that the same was the act of
[____________________], a [____________________], and that said person executed
the same for the purpose and consideration therein expressed, and in the
capacities therein stated.

          GIVEN UNDER MY HAND AND SEAL OF OFFICE, this [____] day of
[__________], 20[__].

                                          ----------------------------------
                                          Notary Public in and for
                                          the State of New York


[SEAL]

My commission expires: ____________

                                      A-2