First, go to AZMVDNow. Gov and activate your AZ MVD Now account.An Arizona motor vehicle bill of sale is part of the vehicle registration process. You can use our free template to create your document. An Arizona motor vehicle bill of sale (ADOT Form 48-2004) is a legal document that transfers ownership of a motor vehicle from a seller to the buyer. The motor vehicle seller must insert the sales price, nonresident state and Arizona county tax rates and complete all mathematical calculations. Use the tips and resources below to help protect yourself and prepare for your next automobile purchase. Click on the topic to learn more.