Use this car purchase agreement template to customize the financing information for your car along with other required details. With our free Sales Agreement form, you'll be ready to print or download your contract in no time.1. Enter the names and mailing addresses of the buyer and seller. In the upper section, sellers are required to input details about the vehicle, including make, model, year, VIN (Vehicle Identification Number), and mileage. A vehicle purchase agreement or vehicle contract is very important. Here are the templates that you can download and print. Our free sample car sale agreement outlines the responsibilities of both parties, payment terms and condition of vehicle transfer. Information you can expect to fill out includes the car's VIN, make, and model, the name and permanent address of each party involved, and the sales amount.