FOURTH SUPPLEMENTAL INDENTURE dated as of March 30, 2012 among DRIVETIMEAUTOMOTIVE GROUP, INC., DT ACCEPTANCE CORPORATION, CARVANA, LLC, and WELLS FARGO BANK, NATIONAL ASSOCIATION, as Trustee 12.625% Senior Secured Notes due 2017

Exhibit 4.1

FOURTH SUPPLEMENTAL INDENTURE

dated as of March 30, 2012

among

DRIVETIME AUTOMOTIVE GROUP, INC.,

DT ACCEPTANCE CORPORATION,

CARVANA, LLC,

and

WELLS FARGO BANK, NATIONAL ASSOCIATION,

as Trustee

12.625%

Senior Secured Notes due

2017

THIS FOURTH SUPPLEMENTAL INDENTURE (this “Fourth Supplemental Indenture”), entered into as of March 30, 2012, among DRIVETIME AUTOMOTIVE GROUP, INC., a Delaware corporation (“DTAG”) and DT ACCEPTANCE CORPORATION, an Arizona corporation (“DTAC” and together with DTAG, the “Issuers”), CARVANA, LLC, an Arizona limited liability company (the “Undersigned”) and WELLS FARGO BANK, NATIONAL ASSOCIATION, as trustee (the “Trustee”).

RECITALS

WHEREAS, the Issuers, the Guarantors party thereto and the Trustee entered into the Indenture, dated as of June 4, 2010 (the “Indenture”), relating to the Issuers’ 12.625% Senior Secured Notes Due 2017 (the “Notes”);

WHEREAS, as a condition to the Trustee entering into the Indenture and the purchase of the Notes by the Holders, the Issuers agreed pursuant to the Indenture to cause any newly acquired or created Restricted Subsidiaries to provide Guarantees in certain circumstances.

AGREEMENT

NOW, THEREFORE, in consideration of the premises and mutual covenants herein contained and intending to be legally bound, the parties to this Fourth Supplemental Indenture hereby agree as follows:

Section 1. Capitalized terms used herein and not otherwise defined herein are used as defined in the Indenture.

Section 2. The Undersigned, by its execution of this Fourth Supplemental Indenture, agrees to be a Guarantor under the Indenture and to be bound by the terms of the Indenture applicable to Guarantors, including, but not limited to, Article 11 thereof.

Section 3. This Fourth Supplemental Indenture shall be governed by and construed in accordance with the laws of the State of New York, without regard to conflicts of laws principles thereof.

Section 4. This Fourth Supplemental Indenture may be signed in various counterparts which together will constitute one and the same instrument.

Section 5. This Fourth Supplemental Indenture is an amendment supplemental to the Indenture and the Indenture and this Fourth Supplemental Indenture will henceforth be read together.

IN WITNESS WHEREOF, the parties hereto have caused this Fourth Supplemental Indenture to be duly executed as of the date first above written.