The vehicle identification number (VIN) is an extremely important piece of information for a potential buyer. The VIN can be used to consult public sources such as Carfax.com about the history of the vehicle (such as flood or collision damage). In addition, several eBay Motors Services valued by buyers such as Limited Warranty and Purchase Insurance require a valid VIN for vehicles later than 1981 model year. Failure to provide a VIN may suggest to the buyer that the car has problems that the seller is trying to hide. If you do not provide a VIN in your listing, you should explain why in your description. Many people will not bid on a car without this information.

Since 1981, the US government requires that all over-the-road vehicles sold contain a 17-character vehicle identification number, or VIN. Some limited edition vehicles built outside the US for sale outside of the US, and vehicles older than 1981 may not have a 17-character VIN.

To find your 17-digit VIN:
Your VIN is on your vehicle registration card or automobile insurance declaration. Also, it is often imprinted on the dashboard near the windshield or inside the driver's door jamb.