Every week, roughly 4,000 motorcycles change hands at BDS Kanto alone — Japan's biggest bike auction held every Wednesday in Tokyo. Behind every single one of those transactions is a document that most overseas buyers either ignore or can't read.
That document is the auction sheet. And if you're buying a motorcycle from Japan without understanding it, you're flying blind.
This is your complete guide to reading a Japanese motorcycle auction sheet. By the end, you'll know exactly what every grade, symbol, and damage code means — and what to watch out for before you commit to a bid.
What Is a Japanese Motorcycle Auction Sheet?
When a motorcycle enters a Japanese auction house — whether that's BDS, USS, or any of the dozen regional networks operating across the country — a licensed, independent inspector physically examines the bike and fills out a standardised condition report.
That report is the auction sheet.
It covers everything: the bike's odometer reading, overall condition grade, body and mechanical condition notes, any recorded accident history, and a detailed diagram showing exactly where on the motorcycle each defect is located. The diagram uses a simplified outline of the vehicle — typically a top-down or side-on view — with coded symbols placed at the precise location of every mark, scratch, dent, or repaired area.
The key thing to understand is that this inspection is carried out by a neutral third party, not the seller. The auction house employs inspectors whose job is to be accurate. Dealers whose bikes are consistently downgraded by inspectors lose money at auction. Inspectors who are too generous with grades get flagged and dismissed. The system has real incentive built into it — which is what makes it more trustworthy than a private seller's description.
That said, it's not infallible — and we'll get to that.
What makes the auction sheet so valuable for overseas buyers is that it gives you a documented record of the bike's condition at the time it was auctioned. Unlike a private sale where someone can claim "just a small scratch," the auction sheet documents every imperfection in writing, mapped to a diagram of the actual motorcycle. It's the paper trail that professional importers rely on, and it's why Japan's used motorcycle market has earned a reputation for transparency that's rare elsewhere.
The inspection happens during the pre-auction day — typically the day before the motorcycle goes under the electronic gavel. Inspectors spend 10 to 20 minutes per bike, working through a checklist that covers overall condition, exterior marks, mechanical observations (if the bike starts), odometer verification, and any relevant history the seller has provided.
Once issued, the auction sheet accompanies the bike through the entire sale and export process. If you're buying through a reputable agent or auction service, you'll receive a copy before the bike ships. If you're not receiving the auction sheet as part of your purchase, that's a red flag about the seller.
The Overall Grade: What S, 6, 5, 4.5, 4, 3.5, 3, R, and RA Actually Mean
This is the number you'll see most prominently on an auction sheet — it's printed large, usually in the upper corner of the form. It's the inspector's summary verdict on the bike's overall condition.
Here's what each grade means in plain language:
Grade 6 (or S): The bike is practically new — typically less than 12 months old from first registration, with both the exterior and mechanical condition in near-showroom form. You'll rarely see grade 6 bikes at auction because Japanese owners don't typically sell bikes this quickly, but they do appear occasionally when someone upgrades immediately or a bike is returned from a demonstration. Expect to pay a premium.
Grade 5: Excellent condition. Minor imperfections that need little or no repair. A grade 5 bike has usually been well maintained, garaged, and kept out of heavy weather. These are the ones that sell fast and at prices reflecting their quality.
Grade 4.5: Above average. Some small scratches or minor wear marks, but the overall impression is clean. A grade 4.5 is a realistic target if you want quality without paying grade 5 prices — these bikes often represent the sweet spot for serious importers.
Grade 4: Average-to-good condition. Some visible scratches or small dents, possibly minor mechanical notes. Requires a bit of attention but nothing structural. For buyers who plan to use the bike rather than display it, grade 4 is where many of the best-value purchases happen.
Grade 3.5: Needs attention. Noticeable cosmetic marks, possible minor mechanical observations. Budget for some cosmetic work before the bike looks its best.
Grade 3: Clear problems. Body damage, significant wear, or repair history that affected the overall assessment. Could still be a solid bike mechanically — the grade is condition-based, not kilometers-based — but go in with eyes open and a reduced maximum bid.
Grade R: The bike has been repaired after an accident or major damage. Not automatically a dealbreaker — Japanese repair standards are genuinely high and a professionally repaired R-grade bike can be a solid purchase. But you need to examine the auction sheet carefully for what was repaired and where.
Grade RA: Similar to R, but specifically for minor accidents that have been fully repaired. The 'A' signals the repair met auction-house standards and the bike was graded accordingly.
Grade 2 or 1: Rough. These bikes are typically bought by dealers for parts, project rebuilds, or track use. If you're planning to ride this bike on public roads, grades 2 and 1 require significant investment.
Grade * (three asterisks or "ungraded"):** The inspector couldn't assess the bike properly — usually because it wouldn't start, the odometer reading was suspicious, or there was too much damage to make a standard evaluation. Treat ungraded bikes with significant caution unless you can obtain additional inspection photos and a detailed explanation.
One important note: the overall grade is a holistic judgment. A bike can have a few cosmetic marks and still be grade 4.5 if the inspector's overall assessment is positive — the marks might be minor enough that the overall impression is still well above average. Don't fixate on one scratch. Read the whole picture.
Interior and Exterior Letter Grades: A Through E
Alongside the numerical overall grade, Japanese auction sheets include separate letter grades for the exterior and (on bikes with storage, fairings, or seat condition) interior surfaces:
- A: Like new. No visible wear.
- B: Some small scratches, up to 15cm in length. Presentable condition overall.
- C: Scratches up to 30cm, or minor dents that are visible on inspection.
- D: Multiple scratches, dents, and visible repair or respray marks.
- E: Significant damage, panels missing, or serious structural issues that affect usability.
For motorcycles, the letter grade is usually applied to the bodywork and painted panels. An overall grade 4 bike with an "A" exterior grade tells you something specific: the mechanical assessment or minor detail brought the score down slightly, but the bodywork looks excellent. That's a useful piece of information when you're evaluating what work the bike will need.
The combination of numerical overall grade and letter exterior grade gives you two data points that tell slightly different stories. A 4/A is a bike in good overall condition with clean bodywork. A 4/C is a bike in good overall condition but with visible cosmetic damage that needs attention. Same numerical grade, different real-world prep cost.
Damage Codes: What Every Letter and Number Means
This is where most overseas buyers get lost. The auction sheet diagram shows a simplified outline of the vehicle with symbols placed at the exact location of each defect. Those symbols are a shorthand language — and once you learn it, the diagram tells you almost everything.
Letter Codes (Type of Damage)
A — Scratch: A surface scratch. Could be a key scratch on the tank, a scuff on the fairing, or a scrape on a panel. The number following it tells you how bad.
U — Dent: A dent with no paint damage. Often from a minor knock in storage or from a topple at low speed.
B — Scratch with dent (combined): Both paint damage and panel deformation at the same location.
W — Wavy or rippled surface: This one matters. A "W" code suggests the panel surface is uneven, which usually indicates body filler has been used beneath the paint. Filler means a repair was done — and often a repair done outside a professional workshop.
X — Needs repair: The inspector has flagged this area as requiring attention. Not necessarily structural, but the severity number will tell you more.
XX — Has been repaired: A previous repair has been done. This could be a professional body shop repair — or it could be a backyard fix. Where the XX appears on the diagram matters enormously.
Y — Crack or hole: More serious than a surface scratch. A crack in the fairing is cosmetic. A crack in the frame is a different matter.
S — Corrosion / rust (surface level): Surface rust or corrosion. On exhaust pipes and older chrome trim, this is cosmetic. On the frame, it's serious.
C — Corroded: Similar to S but indicating penetrating corrosion.
P — Paint chip: Small paint loss, often from stone chips or minor abrasion.
Number Codes (Severity)
Numbers 1, 2, and 3 follow the damage letter to indicate severity:
- 1: Minor or barely visible to the naked eye. Typically ignoring this won't affect your enjoyment of the bike.
- 2: Visible on inspection. Budget for it but it's manageable.
- 3: Significant and clearly apparent. Factor this into your maximum bid and your post-purchase repair estimates.
So "A2" on the tank means a noticeable scratch on the tank. "U1" on the fender means a tiny, barely-visible dent on the fender. "XX" on the frame is something you should stop and think very carefully about. "S3" on a structural panel is a serious flag.
How to Read the Condition Diagram Step by Step
Every auction sheet includes a side-view or top-down outline of the motorcycle. Inspectors place their damage codes directly onto this diagram at the location of each fault. Here's how to work through it systematically:
Step 1: Check the overall grade first. This gives you a baseline before you read the detail. If the overall grade is 4 or above, you're looking at a bike the inspector considered in good condition. The damage codes explain why it's not a 5.
Step 2: Immediately scan for XX marks anywhere on the diagram. Any "repaired" notation near the frame, fork mounts, swing arm pivot, or wheel hubs is a structural flag. These need to be investigated further — ideally with inspection photos.
Step 3: Look at the diagram quadrant by quadrant. Go through the front end (forks, front wheel, headlight area), then the engine/frame area, then the rear (swing arm, rear wheel, exhaust), then each side fairing or panel if applicable.
Step 4: Note severity numbers. A single A2 on the tank is cosmetic. Multiple "3" codes across the diagram mean real repair cost. Mentally add up what it would take to bring each marked area to the condition you want.
Step 5: Read any written notes. Inspectors sometimes add free-text comments about mechanical issues, unusual modifications, or odometer discrepancies. These notes are written in Japanese, but a good import agent will translate them for you. Don't ignore them — they're often the inspector flagging something the standardised codes couldn't fully capture.
Step 6: Check the mechanical section separately. On BDS sheets in particular, there's often a mechanical condition section alongside the bodywork diagram. This may note issues like engine starting difficulty, clutch slip, unusual noises, or chain wear. This section is where the inspector's direct observations about the bike running go.
Step 7: Verify the odometer entry. Look for any symbol next to the mileage figure. An asterisk (*) means the inspector couldn't confirm it matches the vehicle's history. A dollar sign ($) means there's documentation of an odometer change, but it's been recorded. Either marker means you're in uncertain territory on the bike's actual mileage.
Red Flags That Should Stop You Bidding
Some combinations on an auction sheet are warnings worth taking very seriously. Here's what to watch for:
R or RA grade + XX codes on structural areas: The bike was in an accident and structural components were repaired. Japanese repair standards are high, and many R-grade bikes are professionally rebuilt. But "structural" is the keyword. XX codes near the head tube, frame rails, swing arm pivot, or fork tubes need to be investigated with inspection photos before you bid.
Odometer discrepancy markers (*, $): You're buying the bike partly based on its usage history. An unknown or flagged odometer changes that calculation significantly. Either marker should prompt you to ask for more details from the exporter.
Three-asterisk (*) "ungraded" status:** The inspector couldn't assess the bike. Could be mechanical failure on the day, could be a documentation problem, could be damage so significant it defied standard grading. Proceed only if you have substantial additional information.
Multiple W codes across adjacent panels: Wavy or rippled paint across adjacent body sections usually means filler — and widespread filler usually means a more significant repair was done at some point, possibly not professionally. A W code on one panel might be minor. Multiple W codes across a side of the bike is a different story.
S2 or S3 corrosion on the frame or structural areas: Surface rust on older chrome trim or an exhaust pipe is cosmetic. Corrosion penetrating into the frame or sub-frame is structural and represents serious potential safety risk.
Inspector free-text notes about the engine: If there's a written note mentioning unusual noise, difficulty starting, smoke on start-up, or oil consumption, the inspector is telling you something important that the grade code alone didn't capture. These notes are worth translating before you bid.
Grade 3 overall + high severity codes: Sometimes a grade 3 bike has damage codes that explain why — multiple A2 scratches, a U2 dent. That's manageable. But a grade 3 with XX on frame-adjacent panels and a W code across the tank area is a bike with a complex history that's hard to fully assess from a sheet alone.
Where Auction Sheets Come From: BDS, USS, and Japan's Auction Network
Not all auction sheets are created equal — because not all auction houses use exactly the same grading standards, and the inspectors' experience with motorcycles specifically varies considerably.
BDS (Bike Dealer System) is the dominant motorcycle-specific auction network in Japan. Roughly 180,000 bikes pass through BDS annually, with BDS Kanto alone listing around 4,000 motorcycles every Wednesday at their Tokyo venue. The BDS network runs dedicated bike auctions at multiple regional locations including Osaka, Fukuoka, Nagoya, and Sapporo. Because BDS exists specifically for motorcycles, their sheets are calibrated for bikes — not repurposed car inspection forms with the word "car" crossed out. The inspectors at BDS are specialists in motorcycles, which generally means more nuanced mechanical observations.
USS (Used Car System) primarily handles cars — it's the largest mixed-vehicle auction network in Japan — but significant numbers of motorcycles flow through USS lanes as well. USS has an industry reputation for strict, conservative grading: a grade 4 from USS may genuinely be cleaner than a grade 4 from a smaller regional house. Their sheets are detailed, but they're formatted around cars, which means the motorcycle-specific sections are less developed.
Regional auction houses (KAA, SAA, TAA, and various others) cover different parts of Japan. Grading standards are broadly consistent across the industry because they follow JBA (Japan Business Auction) guidelines, but individual inspector variation exists. Regional auction volume is lower than BDS or USS, but bikes from regional auctions can represent value — and the lower-profile listings sometimes have less competition on the bidding floor.
The practical takeaway for buyers: when comparing two grade 4 bikes from different auction houses, the sheet from BDS for a motorcycle-specific listing is generally more reliable — the inspector is a specialist, the diagram is motorcycle-specific, and the grading standards are calibrated for bikes. That said, USS grade 4 bikes tend to be conservatively graded, which often means they're better than a BDS grade 4 in practice.
The Part Nobody Tells You: Grades Can Look Different Across Auction Houses
Here's something that catches overseas buyers off guard every time. The same motorcycle, inspected on the same day at two different auction houses, could receive different overall grades.
This isn't fraud. It's natural variation in human judgment within a standardised system. Experienced importers know this and factor it into how they interpret sheets.
A grade 4 from USS tends to be conservative — the bike is genuinely above average, perhaps closer to a 4.5 at another venue. A grade 4 from a smaller regional house might reflect a more lenient interpretation of the same condition. The difference doesn't appear in the sheet format, which looks broadly similar across the industry. But it's real, and it matters when you're comparing prices.
The other issue nobody mentions upfront: the inspection window is short. Japanese auctions move fast — a skilled inspector spends perhaps 10 to 20 minutes per bike during pre-auction day. They're thorough, but they're not mechanics performing a full service check. Electrical gremlins that only appear intermittently, fuel systems that are borderline, internal engine wear that's below the visible threshold — these things might not appear on the sheet.
This is exactly why reputable Japanese exporters either offer additional inspection services on higher-value bikes, or proactively flag mechanical concerns they've noticed from photos or direct observation when the bike arrived at the holding yard.
The auction sheet is your first and most important filter. It's not your only filter.
How to Use an Auction Sheet to Negotiate
If you're buying through an agent or auction service, the auction sheet is not just a disclosure document — it's a negotiating tool. Knowing how to use it has real monetary value.
A bike with a grade 4 overall but multiple A2 marks on the tank and fairings costs less to acquire at auction than a grade 4 with clean panels — the bidding market prices this in. When instructing your agent to bid, factor the visible cosmetic damage into your ceiling.
Work out a rough estimate of what the visible damage codes would cost to address. Panel respray in Japan typically runs 15,000 to 30,000 yen per panel. Dent repair at a professional shop costs 10,000 to 25,000 yen for minor to moderate dents. Frame repair after R-grade accident history can run 50,000 yen or significantly more depending on what was done. These costs should reduce your maximum bid accordingly.
The other use of the sheet is post-import verification. When the bike arrives at your end, compare its actual condition to what was documented. If there is material damage that isn't on the auction sheet — a major scratch not noted, a structural issue not flagged — you have documented evidence of a discrepancy between the sold condition and the delivered condition. Reputable exporters take this seriously.
Some buyers also use the auction sheet to identify work done before the auction — specifically XX codes indicating previous repairs. A professionally repaired R-grade bike from a licensed Japanese workshop is often a better purchase than a grade 4 bike with subtle mechanical wear that the sheet didn't fully capture. The sheet tells you what's documented. Knowing how to read it lets you make that distinction.
Here's a practical approach used by experienced importers when reviewing an auction sheet before bidding:
Start by listing every damage code on the sheet with its location and severity number. Add a rough repair cost estimate next to each one. Sum the total. That's your "known damage budget" — and it sets a ceiling on how much above the reserve price you should be willing to go. If the combined cosmetic repair bill comes to 80,000 yen, that's 80,000 yen less you should bid compared to a clean version of the same model. Sounds obvious. Most first-time buyers don't do it, which is why experienced importers consistently outperform them at auction on value.
The second thing experienced buyers do is compare the grade and damage codes to the asking price for equivalent bikes in the destination market. If a grade 4.5 example of a model sells for 1,200 USD on arrival in your country, and the bike you're considering is grade 4 with 60,000 yen of documented cosmetic damage, your landed cost target should reflect that spread. The auction sheet is the data source. The bidding discipline is your job.
Auction Sheet Verification: Can You Check If It's Real?
This question comes up more often as overseas buying through informal channels has grown. The short answer: yes, to a degree.
Most major Japanese auction houses have online verification portals or chassis-number lookup services that importers use to cross-reference sheet data. These systems don't always provide full public access, but many licensed importers and export agents have credentials that allow them to pull historical auction records for any bike by chassis number.
If you're buying a bike described as having a "grade 4" auction history but no sheet is provided, and the seller claims the sheet was lost — that's a red flag. Legitimate auction houses maintain records, and legitimate exporters retain their copies.
A genuine auction sheet includes the auction house's name and logo, the date of inspection, the license number of the inspector, the vehicle's chassis number, the registration details, and the inspection findings in standardised format. Sheets missing any of these elements deserve scrutiny.
The chassis number is the key cross-reference point. Any reputable import agent should be able to verify that the chassis number on the sheet matches the bike you're being sold.
Reading the Mileage Section: What You're Actually Buying
One section of the auction sheet that gets less attention than it deserves is the mileage documentation. The odometer reading is recorded at inspection, but the key question is not just what the number says — it's whether the inspector could verify it.
Confirmed odometer: The recorded mileage matches the vehicle's history records. This is the baseline you want.
Asterisk next to mileage: The inspector couldn't confirm the mileage matches historical records. This could be because service records weren't provided, a discrepancy was noted, or the odometer appears to have been replaced without documentation. Treat this as unknown mileage.
Dollar sign next to mileage: An odometer change has been documented. Someone replaced the instrument cluster at some point and there's paperwork — but the bike's total actual mileage is uncertain. Better than an asterisk, but still means you don't know the true total kilometers.
For most buyers, either symbol on the mileage section should prompt one of two responses: discount your bid to account for the unknown, or ask the exporter for additional documentation before proceeding.
Japanese bikes with high confirmed mileage from regular servicing are often better purchases than low-mileage bikes with suspicious odometer readings. A CB1000R with 45,000 confirmed kilometers and a full service record is a known quantity. A "12,000 km" bike with an asterisked odometer is not.
Before You Bid: Your Auction Sheet Quick Checklist
Use this checklist every time you review a Japanese motorcycle auction sheet. Running through it takes under five minutes and consistently saves buyers from expensive surprises.
Overall grade check:
Damage code review:
Odometer section:
Mechanical notes:
Documentation:
If all five areas check out, you have as much information as the auction system can provide. What you do with that information is the difference between a good purchase and an expensive one.
FAQ
What does Grade R mean on a Japanese motorcycle auction sheet? Grade R means the motorcycle has been repaired after an accident or major damage. It doesn't automatically disqualify the bike — Japanese repair standards are genuinely high, and many R-grade bikes have been professionally rebuilt to a structurally sound standard. Look carefully at where the repairs were done using the XX codes on the diagram, whether the repairs were in structural areas, and whether additional inspection photos are available.
Is a Grade 3.5 motorcycle worth buying from Japan? It depends entirely on what caused the 3.5. A 3.5 because of cosmetic scratches and faded paint is very different from a 3.5 because of mechanical observations and repaired bodywork. Read the damage diagram and codes carefully — a 3.5 bike with clean mechanical notes and only cosmetic damage codes can represent excellent value for buyers who plan to ride rather than show.
What do three asterisks mean on an auction sheet? Three asterisks mean the bike was ungraded — the inspector couldn't make a standard assessment. This could be because the bike wouldn't start, the odometer appeared suspicious, or there was damage too extensive to evaluate with standard codes. Treat ungraded bikes with caution unless you have significant additional information from photos or a pre-purchase inspection.
What is the difference between BDS and USS auction sheets? BDS is Japan's motorcycle-specific auction network — their sheets are designed for bikes, with motorcycle-relevant inspection criteria and specialists in powered two-wheelers. USS primarily handles cars and uses a mixed-vehicle format. USS has a reputation for conservative grading, meaning a grade 4 from USS often reflects above-average condition in practice.
How do I know if the odometer has been tampered with? Look for an asterisk or dollar sign next to the mileage figure on the auction sheet. An asterisk means the inspector couldn't verify the mileage against historical records. A dollar sign means an odometer change is documented. Either symbol means the true total mileage is uncertain and you should factor that into your bidding decision.
What damage code should I never ignore? The ones requiring immediate investigation: XX on frame-adjacent panels or fork and swing arm areas, W codes across multiple adjacent sections of the bike, S2 or S3 corrosion codes on structural areas, and any free-text inspector notes about the engine. These aren't always dealbreakers, but they require more information before you bid.
Can I trust the grade without seeing additional photos? For lower-value bikes under 3,000 USD, the grade and auction sheet are a reasonable basis for a bid through a reputable agent. For higher-value bikes above 5,000 USD landed, requesting additional inspection photos or a pre-purchase mechanical assessment is worth the small extra cost. Most Japanese export agents can arrange this.
Do motorcycle auction sheets include service history? Generally no — the auction sheet documents condition at the time of inspection, not the bike's full maintenance history. If service records are available, they're sometimes mentioned in the notes section of the sheet, but this isn't standard practice. If documented service history matters to you, ask the exporter specifically whether any records accompanied the bike at auction.
How AWA Auction Gives You Full Sheet Access Before You Commit
At AWA Auction, every motorcycle listing includes the complete auction sheet — not a summary, the actual document with the diagram, damage codes, grade, and any inspector notes. You can review it in full before you decide whether to proceed.
Our team reads these sheets every day. When you're looking at a bike and something on the sheet doesn't make sense — a code you haven't seen before, a note written in Japanese, a grade that seems inconsistent with the photos — we can walk you through it in plain English.
That context matters. An XX code on a frame rail is a different conversation from an XX code on a fairing panel. A grade R bike with clean structural marks and excellent documentation is a different purchase from an R-grade bike with multiple structural XX codes. The sheet tells the story — you just need someone who reads it regularly to help you understand what it's saying.
Browse our current listings at AWA Auction or contact our team if you're looking at a specific bike and want a second opinion on the sheet.
*Photos via Pexels — free to use under the Pexels License.*
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