What the auction system is
Most used vehicles in Japan are traded through large auction houses. Vehicles are inspected by the auction's own inspector, given a condition grade, and sold in a fast live bidding process. The volume is very large, which is why specific specifications can usually be found if you are patient.
The auction sheet
Each vehicle carries a sheet recording an overall condition grade, separate interior and exterior grades, a diagram of the body with damage marked by code, mileage, and the inspector's handwritten notes. It is the single most useful document when buying remotely.
Reading condition grades
Grades typically run from about 1 up to 5 and S, with R or RA indicating repaired accident damage. A grade 4 truck is generally sound with modest wear; grade 3 means visible wear or damage. Grades are the inspector's judgement, not a warranty, and standards vary slightly between auction houses.
Damage codes on the diagram
Letters mark the type of fault and numbers its severity — for example a scratch, dent or corrosion marker on a specific panel. Corrosion markings matter most on kei trucks from snow regions, where road salt is used heavily.
What the sheet does not tell you
It is a visual and mechanical inspection, not a full teardown. It will not tell you the timing belt history, the state of the clutch, or whether hydraulics on a dump bed cycle properly. Ask for those separately.
This is general information, not legal or customs advice. Import eligibility and road registration are decided by the authorities in your country, state or province, and rules change. Confirm your own position with your customs broker and vehicle registry before committing to a purchase.