Free 17-character VIN & chassis number decoder
Chassis number check & decoder
A chassis number and a VIN are the same 17-character identifier on most modern cars. Decode it for free, then see what has happened to the vehicle.
VIN Decoder & Check Vehicle History
Decode any 17-character VIN and check vehicle history instantly
- No subscription · pay per report
- Instant PDF + 60-day online access
- No sign-up needed, no hidden fees
Data sourced from
- Government Registries
- Insurance Records
- Accident Reports
- Salvage & Title Records
- Service Records
- Manufacturer Recalls
- Auction Reports
What a chassis number tells you
The first three characters identify the manufacturer and region, the middle characters describe the model, body and engine, the tenth character is the model year and the last six are the unique production serial. Decoding it confirms the car matches what the seller says it is.
What the history report adds
A decode only describes how the car left the factory. The history report covers what happened afterwards.
- Accident and damage records, including auction photos where available
- Salvage, rebuilt, flood and other title brands
- Odometer readings over time to help spot rollback
- Open manufacturer recalls
Chassis numbers that are not 17 characters
Cars built before 1981 and many Japanese-market vehicles use shorter chassis numbers (for example NZE161-1234567). Our report works with standard 17-character VINs, so for older or Japan-domestic cars check whether the car also carries a 17-character VIN plate.
Frequently asked questions
Is a chassis number the same as a VIN?
On modern cars, yes. Both refer to the 17-character Vehicle Identification Number. Some older and Japan-domestic cars use shorter chassis numbers instead.
Can I check a chassis number for free?
Yes. The free decode returns manufacturer specifications. The accident, auction and title history is part of the paid report.
Why can’t I enter the letters I, O or Q?
VINs never use the letters I, O or Q because they are easily confused with 1 and 0.