Is a chassis number the same as a VIN?

Not always. A VIN is a 17-character code used on vehicles built for the United States, Canada, Europe and most export markets. A Japanese domestic vehicle instead carries a chassis number, which is a model code and a serial number joined by a hyphen, such as NZE141-6048723. It is shorter than 17 characters and is not a VIN.

How many characters is a Japanese chassis number?

There is no fixed length. A Japanese chassis number is usually between 10 and 14 characters: a model code of roughly 3 to 6 characters, a hyphen, then a serial number. UCF31-0025709 and NZE141-6048723 are both normal examples.

Where do I find the VIN or chassis number on a car?

Look at the plate on the driver's door pillar or door frame, the lower corner of the windscreen on the driver's side, the bulkhead in the engine bay, or the vehicle's registration document. On a Japanese auction sheet it is printed in the box marked 車台番号.

Which number should I enter to check a vehicle?

Enter whichever the vehicle carries. Enter the chassis number for a Japanese domestic vehicle and the 17-character VIN for a vehicle registered in the United States or Canada. Both are accepted and are matched to the correct data source.

VIN or chassis number — which one does your car have?

People use the two words as if they mean the same thing. For a Japanese import they do not, and that is the single most common reason a vehicle check fails before it starts.

The short answer

A VIN (Vehicle Identification Number) is a 17-character code used on vehicles built for the United States, Canada, Europe and most export markets. It is set by an international standard, so it is always exactly 17 characters and never contains the letters I, O or Q.

A Japanese domestic vehicle does not have one. It carries a chassis number — a model code, a hyphen, then a serial number, like NZE141-6048723 or UCF31-0025709. It is shorter than a VIN, and counting 17 characters on it will only cause confusion.

Both are valid. You just need to know which one you are holding.

Side by side

	Japanese chassis number	VIN
Used on	Vehicles first sold inside Japan	US, Canada, Europe and most export-market vehicles
Length	No fixed length, usually 10–14 characters	Always exactly 17 characters
Shape	Model code, hyphen, serial number	One continuous block, no hyphen
Example	`NZE141-6048723`	`JTJBARBZ6K2200598`
On an auction sheet	Printed in the box marked 車台番号

What the 17 characters of a VIN mean

JTJ1–3 · maker BARBZ64–9 · vehicle K220059810–17 · year & serial

Characters 1–3 identify the manufacturer and the country the vehicle was built for.
Characters 4–9 describe the vehicle itself — model, body, engine and restraint system.
Character 10 is the model year, and character 11 the assembly plant.
Characters 12–17 are the serial number, unique to that car.

A Japanese chassis number is simpler: the part before the hyphen is the model code (NZE141 is a Corolla, UCF31 a Celsior), and the part after it is that car's production serial.

Where to find it on the car

The plate or sticker on the driver's door pillar or inside the door frame.
The lower corner of the windscreen on the driver's side, visible from outside.
Stamped on the bulkhead or strut tower in the engine bay.
On the vehicle's registration document or export certificate.
On a Japanese auction sheet, in the box marked 車台番号 — see the auction report guide for where that sits on the sheet.

Why it matters when you check a car

It is the key that pulls the vehicle's recorded history — auction grade, mileage at inspection, damage marks, reported accidents and title status.
It is how you confirm the car a seller is advertising is the car that was actually inspected.
One wrong character returns either nothing or someone else's vehicle, so check it against the car or its paperwork rather than a listing screenshot.

Have the number? Check the vehicle

Enter a Japanese chassis number or a 17-character VIN — whichever the car carries. We match it to the right data source automatically.

Check a VIN or chassis number

Next: why checking the auction sheet matters and how to read one.