The vehicle sales agreement is between a seller and buyer for the sale of a vehicle. It specifies the vehicle make, model, year, and other details.Vehicle Information. The buyer takes the full ownership of the Vehicle (Make, Registration Number). bearing. How to fill out the Private Car Sale Contract Template? Our free sample car sale agreement outlines the responsibilities of both parties, payment terms and condition of vehicle transfer. 1. Be specific about the car being sold. Include the make, model, year, VIN number, and mileage in the contract to avoid any confusion. Org is the world's only social network where fans can buy, sell, and trade tickets for face value and avoid scalping.