VIN number on car: where to find it and how dealers use it
Where to find the VIN number on a car, how to decode its 17 characters, and how dealers use the VIN to confirm spec, history and value before buying.
· 7 min read
The VIN number on a car is a 17-character code that is stamped into the body or chassis on the right-hand side, printed on the manufacturer's plate (often on the B-pillar or in the engine bay), usually visible through the bottom of the windscreen, and shown in field E of the EU registration certificate. For a dealer, the VIN is the one reliable link between the car, its documents, its specification and its history.
Where to find the VIN number on a car
EU type-approval rules fix where the VIN must be. Commission Regulation (EU) No 19/2011 requires the VIN to be stamped or mechanically hammered into the chassis, frame or similar structure, in a clearly visible and accessible position, on the right-hand side of the vehicle. The same regulation requires a manufacturer's statutory plate with the VIN.
In practice, check these places:
| Location | What you find | Notes |
|---|---|---|
| Bulkhead, floor under the front passenger seat or right-hand side of the engine bay | Stamped VIN in the body | Often under a flap in the carpet or a plastic cover |
| B-pillar (door frame) or engine bay | Manufacturer's statutory plate | Shows VIN, type-approval number and permitted masses |
| Lower edge of the windscreen | VIN plate visible from outside | Common, but not required in all markets |
| Registration certificate | Field E | Same field in every EU country's harmonised certificate |
| Certificate of conformity | VIN field | Must match exactly |
| Service records, insurance papers, invoices | Printed VIN | Useful to link history to the car |
When a car is bought unseen abroad, ask the seller for a photo of the stamped VIN and the plate, not just the windscreen. The stamped number is the hardest to swap.
What the 17 characters of a VIN mean
A VIN follows the international standard ISO 3779 and has three sections:
- WMI – World Manufacturer Identifier (characters 1–3). Identifies the manufacturer and region. For example, WVW is Volkswagen passenger cars, WBA is BMW, TMB is Škoda.
- VDS – Vehicle Descriptor Section (characters 4–9). Describes the model, body and often the engine, coded by each manufacturer in its own way.
- VIS – Vehicle Identifier Section (characters 10–17). The serial part. Many manufacturers use the 10th character for the model year and the 11th for the factory, but in Europe this is a convention, not a legal requirement.
The letters I, O and Q are not used, to avoid confusion with 1 and 0. In North America, the 9th character is a mandatory check digit; European VINs often do not have one, so a "check digit failed" warning from an American decoder does not mean a European VIN is false.
For car dealers
Know your margin before you buy
MyCarDealer compares any car from an auction or listing with the market in your country and shows the net margin after VAT, transport and costs – and the maximum bid.
Request accessCan I check a car's equipment and history from its VIN?
Yes, to a large extent. The VIN is the key to three kinds of information.
- Factory specification. Manufacturer systems and paid decoding services return the original build data: engine code, gearbox, paint, trim and factory options. This is the most reliable way to confirm that a car listed as "full spec" really has the options that drive its value.
- History. Service networks store maintenance by VIN. Commercial history reports collect mileage readings, previous registrations, damage records and stolen-vehicle flags from several countries. Our guide to the car mileage check explains how to use them.
- Recalls. Brand dealers can see open recall campaigns for that VIN.
What the VIN does not tell you is condition. A perfect build sheet says nothing about a worn clutch or a repaired front end.
Used car valuation by VIN: why the exact spec matters
A used car valuation by VIN is only as good as the like-for-like comparison behind it. Two cars of the same model and year can be worlds apart in price because of engine, gearbox and mileage profile.
According to listings tracked by MyCarDealer in Germany in October 2026, 2019–2021 VW Golf diesels had a median asking price of €15,688 (343 listings, median 123,400 km), while petrol Golfs of the same years were at €17,950 (500 listings, median 79,500 km). Same model, same years, a €2,262 difference, mostly explained by mileage and engine mix.
That is why MyCarDealer compares cars of the same model, generation, engine and year range (±2 years) rather than just "Golf 2020". If you decode the VIN first, you know which comparison is the right one. For the wider method, see used car valuation for dealers, or check one car with the free valuation.
Why the VIN must match the documents when importing a car
When you register an imported car, the authority checks that the VIN on the car matches the foreign registration certificate (field E under Directive 1999/37/EC), the certificate of conformity and your invoice. Any mismatch stops the registration.
Typical problems:
- Typos on the invoice or contract. Harmless but annoying; get a corrected document before payment.
- CoC for the wrong car. A CoC from a similar car does not work. Our certificate of conformity guide explains how to get the right one.
- Plate and stamp disagree. A replaced windscreen plate or a missing statutory plate needs explaining. A stamped VIN that has been ground, painted over or welded around is a reason to walk away.
- Stolen or cloned cars. Cloned cars carry the VIN of a legally registered twin. Signs include a VIN plate with non-original rivets, documents that do not match the colour or equipment, and a seller in a hurry.
A five-minute VIN checklist before you buy
Use this routine on every car you buy unseen:
- Get photos of the stamped VIN, the statutory plate and the windscreen VIN.
- Compare all three with field E of the registration certificate and the CoC.
- Decode the VIN to confirm make, model, engine and model year.
- Pull the build data and check the options against the listing.
- Run a history report for mileage readings, damage records and stolen-vehicle flags.
- Write the VIN on your purchase contract and the transport order.
If one step fails, stop until the seller explains it. Most genuine sellers can clear up a mismatch in a day; a seller who cannot is giving you an answer too.
Frequently asked questions
How do I find my car's VIN number?
Look at field E of the registration certificate, the lower edge of the windscreen, the statutory plate on the B-pillar or in the engine bay, and the number stamped into the body on the right-hand side, often under a carpet flap near the front passenger seat.
Is the chassis number the same as the VIN?
Yes. In everyday use, "chassis number", "frame number" and "VIN" mean the same 17-character identifier. Older or non-European vehicles may have shorter chassis numbers that do not follow the 17-character format.
Is the VIN on the registration certificate?
Yes. In the harmonised EU registration certificate the VIN is in field E, in every member state. It is also on the certificate of conformity and usually on service and insurance documents.
What do the 17 characters of a VIN mean?
Characters 1–3 identify the manufacturer, 4–9 describe the vehicle type as coded by the manufacturer, and 10–17 identify the individual car. Many manufacturers use the 10th character for the model year, but this is not compulsory in Europe.
Why must the VIN match the documents when importing a car?
The registration authority checks the VIN on the car against the foreign registration certificate, the CoC and the invoice. If they do not match, the car cannot be registered, and a mismatch can also indicate a stolen or cloned vehicle.