Checking a Japanese import: why the UK data starts halfway through the story

A Skyline, Alphard, Jimny or Fit imported last year has been on UK records for a matter of months. Every finance register, insurance write-off register and MOT record a UK check queries covers only that period. The years before it are invisible unless you go and get them, and that is why imports are a favourite for mileage fraud.

What a UK check does give you on an import

• Outstanding finance. If a UK owner has borrowed against the car since it was registered here, that is on the register and it matters enormously — a car imported in 2023 and financed in 2024 can still be repossessed from you.
• Stolen markers recorded against the vehicle since UK registration.
• UK write-off records: any insurance total-loss claim since it landed.
• MOT history since registration, including the recorded mileage at every UK test.
• The import marker itself, which DVLA records on the vehicle.

What no UK check can give you

• Japanese accident, repair or auction grading history.
• Japanese odometer readings.
• Whether it was a taxi, a driving-school car or part of a fleet in Japan.
• Flood, hail or storm damage recorded in Japan.
• Japanese de-registration and export records.

No UK provider holds this data — not us, and not the European specialists, whose coverage is Europe rather than Japan. Anyone offering a full Japanese history from a UK number plate alone is overselling. The honest position is that the Japanese years live in documents, not databases.

The four documents that tell the real story

1. The auction sheet

Most used cars sold at Japanese auction carry an inspection sheet: an overall grade, an interior grade, a body diagram marked with every dent and scratch, the odometer reading at auction and the inspector's notes. It is the single most valuable document for an import, and it is written in Japanese. Grades run roughly from 6 or S for near-new down to 1, with R or RA meaning repaired accident damage, and diagram codes mark the damage type — A for a scratch, U for a dent, W for a repair. Conventions vary slightly between auction houses.

Ask the seller for it. A good importer keeps it, often with a translation. A seller who does not have it on a recently imported car is either careless or avoiding the grade, and the sheet can usually be recovered from the chassis number through a Japanese auction search service for a fee.

2. The export certificate

The de-registration and export certificate issued when the car left Japan records the chassis number, the de-registration date and the mileage at export. Those three numbers — auction odometer, export certificate, first UK MOT — should form a rising line. If the UK figure is lower than the Japanese one, the car has been clocked on the way over. That is the classic import scam, and it is straightforward to catch once you have the paperwork in front of you.

3. The chassis number

Japanese vehicles use a chassis number rather than a 17-character VIN — typically a model code, a hyphen and a serial, such as JZX100-0012345. UK systems expect 17 digits, so imports are often registered with a padded or substituted number. Check the number on the car itself (bulkhead, inner wing, or under the passenger seat depending on the model) against the V5C and against the export certificate.

4. The UK MOT history

Free, official, and the best mileage evidence available on this side of the water. On an import, read it forwards from the first test and note that test's date: it tells you roughly when the car entered UK use, which should line up with the import and registration dates on the V5C.

Import-specific risks worth knowing

Mileage above all. Japanese domestic cars often genuinely do have low mileage — short commutes, expensive motorway tolls and the shaken inspection regime pushing older cars off the road. That is real, and it is also the perfect cover story for a clocked import. “They are all low mileage over there” is how a 180,000 km car becomes an 80,000 mile car. Verify with paperwork, not folklore.

• Kilometres against miles. Japanese odometers read in kilometres; 100,000 km is 62,137 miles. Confirm which unit each document uses before comparing figures — honest conversion errors happen, and dishonest ones are convenient.
• Corrosion. Road treatment differs and some regions of Japan are hard on underbodies. Get the car on a ramp.
• Specification. JDM-market models can differ mechanically from the UK version of the same nameplate, which affects parts availability and cost.
• Insurance. Some insurers load or decline grey imports. Get a quote before you commit, not after.
• Electronics. Japanese-market head units, navigation and telematics often do not work usefully in the UK.

A practical checking order

• Run the free check first — DVLA record, import marker, tax status and the full MOT history with mileage at every test.
• Buy the UK registers that actually apply: finance, stolen and UK write-off. On an import you can skip much of the bundle and buy only those.
• Ask for the auction sheet and the export certificate. If the seller has neither, price in an auction-sheet retrieval service, or walk.
• Reconcile the three mileage figures: auction, export, first UK MOT.
• Match the chassis number on the car, the V5C and the export certificate.
• Inspect underneath, on a ramp, with someone who knows the model.