Japanese vehicle registration documents give the date of first registration of a vehicle, not the build date.

If the vehicle has been registered in Japan, then deregistered and then re-registered then the date of the re-registration will be shown.

However, decoders can assist in trying to determine the build date. Traditionally these have been online tools based on the manufacturers databases, but recently general AI tools can also be used for this purpose.

Japanese Domestic Market chassis numbers are sequential only and don't provide build information like the international 17 digit VIN Decoders.

These decoders are the "best available information". Because Japanese manufacturers don't make build date information for individual vehicles readily available the results of these decoders can't easily be verified in Japan. Importers requiring build date information for individual vehicles should seek validation of these results from their own sources.

A possible clue to the approximate build date is the seat belt label. Japanese Domestic Market vehicles have the manufacture date of the seat belt on the seat belt label. The vehicle they are fitted to was usually made not long after that date. However, if the vehicle has had the seat belt replaced (not common, but it sometimes happens) then this method is invalid.

These data are provided by third parties and we cannot guarantee their accuracy. To confirm the results we recommend you undertake further verification.

General VIN Decoders let you find the build information and specs of vehicles you're interested in for multiple brands.