Odometer Declaration. Use this car purchase agreement template to customize the financing information for your car along with other required details.The buyer takes the full ownership of the Vehicle (Make, Registration Number). bearing. With our free Sales Agreement form, you'll be ready to print or download your contract in no time. A vehicle purchase agreement or vehicle contract is very important. Here are the templates that you can download and print. 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.