How to Read a Japanese Auction Sheet (2026 Guide)
A Japanese auction sheet is the single most honest document in the used-car world. While photos are chosen to flatter and descriptions are written to sell, the auction sheet is prepared by an independent inspector with no stake in the sale. Learn to read it, and you can judge a car’s true condition from the other side of the planet. Ignore it, and you are buying blind.
This guide explains every part of the sheet: the overall grade, the interior grade, the panel map, and the inspector's shorthand marks. By the end you will be able to look at any sheet and know what you are really bidding on.What is a Japanese auction sheet?
When a vehicle enters a Japanese wholesale auction, a trained inspector examines it and records its condition on a standardized sheet. Every major auction house — USS, TAA, JAA, Aucnet and others — uses a broadly similar system. The sheet contains an overall grade, separate interior and exterior grades, a diagram of the car with marks showing exactly where damage exists, and short codes describing the type and severity of each issue.
Because the inspector is independent and the system is standardized, the sheet is far more reliable than a seller’s own description. It is the closest thing in the used-car market to a verified condition report.
The overall grade
The most prominent number on the sheet is the overall grade, which summarizes the car’s condition on a scale. While houses vary slightly, the common scale runs roughly like this:
- Grade 5 and above — excellent, near-new condition, minimal wear.
- Grade 4.5 — very good, light wear consistent with low mileage.
- Grade 4 — good, normal wear for age, no significant problems.
- Grade 3.5 — average, some wear or minor repaired damage.
- Grade 3 — below average, noticeable wear or repair history.
- Grade 2 and below — significant issues, heavy wear, or major repair.
- Grade R (or RA) — repaired vehicle; has had accident repair. This is critical to spot.
- **Grade 0 / ***** — special cases such as severe damage, salvage, or non-standard condition.
- 5 Near-new, minimal wear
- 4.5 Very good, light wear / low mileage
- 4 Good, normal wear for age
- 3.5 Average, minor repair or wear
- 3 Below average, noticeable wear
- 2 Significant issues, heavy wear or major repair
- R Repaired — has accident-repair history
- 0 Special / non-standard condition
Interior and exterior grades
Separate from the overall grade, most sheets carry an interior grade expressed in letters (commonly A through D or E), where A is excellent and lower letters indicate increasing wear, staining, smoke odor, or damage. A car can carry a strong exterior grade and a weak interior grade, or vice versa — the two are scored independently, which is why reading only the headline number is a mistake.
The panel map: where the damage actually is
The diagram of the car is the heart of the sheet. The inspector marks each panel and area where they find an issue, using a letter-and-number system. Letters describe the type of issue; numbers describe the severity.
Common type letters include:- A — a scratch (kizu)
- U — a dent (ukumi)
- W — repaired/wave (paint or bodywork repair)
- S — rust (sabi)
- C — corrosion
- X — a panel needing replacement
- XX — a panel that has been replaced
- B — a dent with a scratch
- P — paint imperfection
Each mark is paired with a severity number, typically 1 (faint, barely noticeable) up to 4 or more (large, obvious, or serious). So a mark like A1 is a faint scratch — cosmetic and minor — while W3 signals a substantial repair, and XX tells you a panel has already been swapped, which points to past damage.
How to actually read a sheet in practice
Put it together and you read a sheet in a consistent order:
- Start with the overall grade. It frames everything. A 4 or 4.5 is a healthy starting point; an R grade demands caution.
- Check for R, repair, or replacement marks. An R grade, or W/X/XX marks, mean accident or repair history. Not automatically disqualifying — but it must be priced in.
- Read the panel map. Cluster of marks on one corner suggests a localized impact; scattered A1s are just honest age.
- Check the interior grade. A clean body with a D-grade interior may smell of smoke or have torn trim.
- Read the inspector’s notes. Many sheets include handwritten comments — often the most revealing part, noting things like oil leaks, warning lights, or aftermarket parts.
The skill is in combining these. A grade 3.5 with a single localized repair on a rear quarter and an A-grade interior can be a far better buy than a grade 4 with a smoke-soaked cabin and rust marks across the underbody.
Let the tool do the translation
Auction sheets are written in Japanese, and the marks are dense. Reading them fluently takes practice. The WATTSHIP Auction Sheet Decipher translates a sheet into plain language, maps the marks, and flags the issues that matter — so you get an inspector-level read without years of experience.
It is not a replacement for understanding the system — knowing what an R grade or an XX mark means keeps you sharp — but it removes the language barrier and the guesswork, especially when you are comparing several cars quickly.Frequently asked questions
What is a good auction grade?
For most importers, grade 4 or 4.5 is the ideal balance of condition and value. Grade 5 is excellent but commands a premium; grade 3.5 can be a good buy if the marks are minor and localized. Grade R means the car has accident repair history.
What does grade R mean on an auction sheet?
Grade R (sometimes RA) indicates a repaired vehicle — one that has undergone accident repair. It is not automatically a bad buy, but the repair must be understood and priced in, and the panel map and notes should be read carefully.
What do the numbers and letters on the panel map mean?
Letters describe the type of issue (A = scratch, U = dent, W = repair, S = rust, X = needs replacement, XX = replaced) and the paired number describes severity, usually from 1 (minor) to 4 or higher (serious).
Can I trust a Japanese auction sheet?
Auction sheets are prepared by independent inspectors using a standardized system, which makes them far more reliable than seller descriptions. They are the most trustworthy condition document in the used-car market, though no inspection is perfect.
Do I need to read Japanese to understand an auction sheet?
It helps, but it is not required. Tools like the Auction Sheet Decipher translate the sheet and explain the marks, so you can read any sheet in plain English.
The sheet is your edge
Most buyers chasing imported cars never learn to read the auction sheet — they bid on photos and hope. The importers who consistently buy well are the ones who treat the sheet as the source of truth and the photos as marketing.
Before your next bid, run the sheet through the Auction Sheet Decipher, and pair what it tells you with the Landed Cost Calculator so you know both the condition and the true cost before you commit. For the full process from auction to driveway, start with our complete guide to importing a car from Japan.
Sources
- Japanese auction house grading conventions — industry-standard inspection systems used by USS, TAA, JAA, Aucnet, and other major auction houses.
- WATTSHIP Auction Sheet Decipher — tool methodology and decoded mark reference.
WATTSHIP intelligence is for reference and estimation. Auction grading conventions vary by house and can change; always treat a deciphered sheet as guidance, not a guarantee of condition. See our Disclaimer.