The car’s Vehicle Identification Number(VIN) is the identifying code for a SPECIFIC automobile. The Manufacturers VIN serves as the car’s fingerprint, as no two vehicles in operation will have the same VIN. A VIN is composed of characters (digits and capital letters) that act as a unique identifier for the vehicle. Most Manufacturers use a digit in this VIN to indicate the intended Model year of the vehicle. Others will require manufacturer production booklets to determine the model year.