Motorcycle VIN lookup: what a VIN tells you and what it doesn't

A VIN identifies the exact bike: manufacturer, model, engine, model year, plant and a unique serial. It is the fastest way to get an accurate value and the first thing a buyer or dealer will check.

Where it is

On the steering head — the frame tube behind the front forks — stamped into the metal and usually on a sticker. It is also on the title, the registration and your insurance card. Every VIN since 1981 is 17 characters and never uses the letters I, O or Q.

What the characters mean

• Positions 1–3: the manufacturer. 1HD is Harley-Davidson, JH2 is Honda Japan, WB1 is BMW, ZDM is Ducati.
• Positions 4–8: model, engine and configuration, in a manufacturer-specific code.
• Position 9: a check digit computed from the others. Our form validates it before decoding, which catches most typos.
• Position 10: the model year. A is 1980 or 2010, B is 1981 or 2011, and so on (I, O, Q, U, Z and 0 are skipped).
• Position 11: the assembly plant.
• Positions 12–17: the serial number.

What the decoder returns

We decode through NHTSA's vPIC database, which is free and public. For a motorcycle it returns make, model, model year, engine displacement, horsepower where reported, body class and the plant. We map that onto our register so the form pre-selects the right model and year.

What a VIN cannot tell you

Mileage, condition, title status, accident history or modifications. A VIN is the bike's identity, not its biography. For title history, an NMVTIS-approved provider can check whether the VIN has ever carried a salvage brand in any state — worth $10 before you buy a bike from a stranger. Recalls, on the other hand, are public: any franchised dealer, or NHTSA's own recall lookup, will tell you which campaigns are open on that VIN.