How do I find the year my Japanese import was built?

Japanese-market cars have a chassis (frame) number such as AGH30-0250000 instead of a 17-character VIN. Japan's carmakers publish, through their association JAMA, the chassis number ranges each model was built with every year from 2015. Enter the number above and we find the range it falls in.

Is the build year the same as the year on the V5C?

Not always. The year on a UK record for an import can come from its first registration in Japan, so a car built late in one year can show the next year. A V5C year earlier than the build year is a reason to check the chassis number on the car.

Why can't you date a car built before 2015?

JAMA's lists start with cars built in 2015. For older cars the export certificate gives the first registration date in Japan, and the model guide gives the years the model was built.

A serial inside a listed range gives the year straight from the list. A serial in a gap between two ranges gives the likely year or years, and we say so. JAMA describes the lists as reference information, not a certificate.

What year was my Japanese car built?

Japan’s carmakers publish the chassis number ranges every model was built with each year. Enter a chassis (frame) number, such as AGH30-0250000, to see which year’s range it falls in.

That’s a chassis code without its serial. Here are the ranges JAMA lists for BT5; add the serial after the hyphen to find the year.

BT5 · 4BA-BT5 · Subaru
Built	Chassis numbers
2021	BT5-002013 to 004135BT5-004137 to 004140BT5-004142 to 004143
2022	BT5-004136 to 004136BT5-004141 to 004141BT5-004144 to 006766BT5-007227 to 012556BT5-016003 to 018145
2023	BT5-018146 to 021931BT5-024002 to 026365BT5-026368 to 026368
2024	BT5-026366 to 026367BT5-026369 to 030428BT5-037001 to 039255BT5-039257 to 039259BT5-039261 to 039261
2025	BT5-039256 to 039256BT5-039260 to 039260BT5-039262 to 045236

From the JAMA chassis number lists: 車台番号一覧表. We keep only the chassis code, serial ranges and year. JAMA calls them reference information, not a certificate.

To compare it with the car’s UK records, run a free check with its registration: we flag a UK year that comes before the build year. The chassis decoder shows what else the number says.

What the lists cover

Cars built in Japan from 2015 to 2025 by Toyota and Lexus, Nissan, Honda, Mazda, Subaru, Suzuki, Daihatsu and Mitsubishi: 1,182 chassis codes, including cars built for another brand, such as the Toyota 86 that Subaru builds. Lorries and motorcycles are left out. Cars built before 2015, and cars built outside Japan, aren’t in the lists.

Source: the JAMA chassis number lists: 車台番号一覧表, 2015 to 2025, published by the Japan Automobile Manufacturers Association for garages and inspection stations. We keep only the chassis code, serial ranges and year, and update them each year when the new list comes out.

Model guides with build years by chassis number

Questions

How do I find the year my Japanese import was built?: Japanese-market cars have a chassis (frame) number such as AGH30-0250000 instead of a 17-character VIN. Japan's carmakers publish, through their association JAMA, the chassis number ranges each model was built with every year from 2015. Enter the number above and we find the range it falls in.
Is the build year the same as the year on the V5C?: Not always. The year on a UK record for an import can come from its first registration in Japan, so a car built late in one year can show the next year. A V5C year earlier than the build year is a reason to check the chassis number on the car.
Why can't you date a car built before 2015?: JAMA's lists start with cars built in 2015. For older cars the export certificate gives the first registration date in Japan, and the model guide gives the years the model was built.
How accurate is it?: A serial inside a listed range gives the year straight from the list. A serial in a gap between two ranges gives the likely year or years, and we say so. JAMA describes the lists as reference information, not a certificate.