Every vehicle running on the UK roads, as well as anywhere in the world, has a distinct stamped-in vehicle identification number (VIN). No two cars in the world have the same VIN, so you can call it a vehicle’s fingerprint. When you are in the market to buy a vehicle, the two numbers you should check include the Registration Number and the VIN. The reason is, all the data about a vehicle is maintained against these numbers. Now the question is how to locate these numbers. While the registration number is visible to all through number plate, you need some efforts to trace the VIN. There are multiple ways to find VIN for free. However, before we tell you how to trace VIN for free, we first need to explain VIN.