Find the best VIN decoder for your next car.

What is a VIN decoder?

A vehicle identification number identifies a particular vehicle. A decoder interprets the information a manufacturer encodes, such as the vehicle family, model year or engine details where available. It does not itself contain a list of accidents or every mileage reading.

VIN decoding and vehicle history reports

A basic decoder may be free. A history service searches separate records linked to that vehicle. Depending on the market and data supplied, a report may include title events, recorded mileage, insurance losses or photographs. Coverage varies; an empty section does not establish a clean history.

How to choose a vehicle history service

Start with the country where the car was registered, including earlier countries for an import. Compare the provider’s relevant coverage, sample report, billing terms and refund conditions. For a US vehicle, title and salvage records may be particularly useful; in Europe, national inspection and registration sources differ by country.

Where can you find a VIN?

Check the vehicle documents and the locations described in its owner’s manual. Many modern cars have a visible VIN near the windscreen and a label around a door opening, but the stamped identifier’s location varies. Compare identifiers across the vehicle and documents. Standard 17-character VINs do not use the letters I, O or Q; older chassis numbers may be shorter.

A report is one part of a used-car check

Inspect the car, review invoices and ownership documents, check recalls and arrange an independent mechanical inspection when appropriate. A history report can reveal records worth investigating; it cannot guarantee the vehicle’s condition. Use our pre-purchase inspection checklist.