VIN Check

What is a VIN?

A VIN, short for Vehicle Identification Number, is a unique 17-character code assigned to a vehicle when it is built. No two vehicles share the same VIN. It encodes information such as the manufacturer, some of the vehicle's characteristics, and a serial number that makes the individual car identifiable. Think of it as the car's fingerprint: the registration plate can change over a vehicle's life, but the VIN stays with the car.

How AI Reg Check actually works

It is worth being completely clear about scope. In the UK, vehicle data checks are looked up from the registration (the number plate), not from the VIN. AI Reg Check works the same way: you enter the registration and we return the vehicle's data. We do not offer a VIN-input lookup, and we will never pretend to. Instead, the VIN plays a vital role at the point of viewing the car, where you use it to verify that the physical vehicle matches its paperwork and the data you have already looked up.

When you run a free AI Car Check on a registration, you get the vehicle details, MOT history, mileage timeline, valuation, keeper count and reliability context. AI Buy Score and "Would I Buy It?" require both current mileage and asking price. When you are serious about a car, the Full Vehicle History Check adds provenance data such as outstanding finance, write-off markers, stolen markers, mileage discrepancies, keeper and plate changes, and import or export markers where available. The VIN is how you tie all of that back to the actual metal in front of you.

Where to find the VIN

The VIN is displayed in several places so it can be cross-checked. Common locations include:

• At the base of the windscreen on the driver's side, visible from outside the car
• On a metal plate or stamping in the engine bay
• On a sticker inside the driver's door frame or door shut
• Under carpet or trim in the boot, or in a front footwell
• Printed on the V5C registration certificate (logbook)

How to verify the VIN

Verifying the VIN is a simple but powerful anti-fraud step. When you view the car, check that the VIN shown in the different locations on the vehicle all match each other, and that they match the VIN printed on the V5C. Look closely for signs of tampering: mismatched characters, plates that appear to have been removed and refitted, fresh rivets, or stickers that look replaced. If the VINs do not agree, or anything looks disturbed, treat it as a serious warning that the car could be cloned or its identity altered.

Worked example

You find a car online, note the registration, and run a free AI Car Check. The data looks healthy, so you go to view it and run the Full Vehicle History Check for provenance. Standing at the car, you compare the VIN at the base of the windscreen, the plate in the engine bay, and the number on the V5C. They all match, the paperwork is consistent, and the seller's name and address line up with the registered keeper. That consistency is exactly what you want to see, and it confirms the reassuring data you already gathered belongs to the car in front of you.

The VIN is your in-person safeguard

Data checks from the registration tell you the story of a vehicle's record. The VIN check is how you confirm the car you are buying is genuinely that vehicle. Do both: run the checks from the reg before you travel, then verify the VIN against the V5C when you are standing next to the car. Neither replaces a proper physical inspection, but together they make a fraudulent or misrepresented car far harder to sell to you.