Bought a Vehicle Without A Title? Vehicles are required to be titled in the buyer's name within 30 days from the date of sale.To sell a car legally, you need a clear title, Bill of Sale, lien release statement (if applicable), and an odometer disclosure form. Texas does not require a bill of sale except for bonded titles. Both parties are required to sign. The DMV recommends that both parties jointly visit a County Tax Office when the seller is signing over the vehicle's title. Even with a notarized bill of sale, you will in all probability still need to hire a lawyer. The DMV is not going to surrender a title to you. The Texas bill of sale form verifies the elemental facts of the sale of personal property in exchange for a predetermined compensatory amount.