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Japanese Car Auction Grades Explained: 6, 5, 4.5, 4, 3.5, R and RA

9/24/2026

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If you're importing a used car from Japan, you'll quickly encounter the auction grading system. It's a standardized way for auction houses to rate a vehicle's overall condition. But what do the numbers really mean? This Japanese car auction grades explained guide will walk you through grades 6, 5, 4.5, 4, 3.5, R and RA, and help you decide which are safe to import.

What Are Japanese Auction Grades?

Japanese auction houses like USS, TAA, and JU inspect each vehicle and assign an overall grade from 1 to 6, with special codes like R and RA for repaired cars. The grade is a quick summary of exterior, interior, and mechanical condition. Higher numbers mean better condition. Alongside the overall grade, you'll also see interior grades (A, B, C, D), and a detailed auction sheet with marks for scratches, dents, and repairs.

The Main Grades: 6, 5, 4.5, 4, 3.5

Grade 6 – Essentially a new car. Often unregistered with delivery mileage only. Very rare and expensive.

Grade 5 – As new. Low mileage, no repairs, and only the tiniest imperfections. These are often described as grade 5 immaculate condition Japanese cars. They command a premium but are the safest bet.

Grade 4.5 – Excellent condition. May have a few minor scratches but no dents or repairs. Very close to grade 5, but typically cheaper.

Grade 4 – Good condition. You'll find some minor scratches, maybe a small dent, or a minor repaired panel. Mileage is usually average. Still a solid, reliable car.

Grade 3.5 – Fair condition. Noticeable scratches and dents, possibly some repairs, and higher mileage. Can be a good value if you're on a budget, but inspect the auction sheet carefully.

Difference Between Grade 4 and 4.5 Auction

This is one of the most common questions. The difference between grade 4 and 4.5 auction is all about the number and severity of imperfections. A grade 4.5 car will have fewer cosmetic flaws—perhaps just one or two tiny scratches that are hard to see. A grade 4 car may have a few more scratches, a small dent, or a minor repair that was done well. Both grades are generally safe to import. Grade 4.5 is closer to new, so it costs more. Grade 4 offers better value if you don't mind a little wear.

What Does Auction Grade R Mean? And RA?

R and RA are not condition grades—they are warnings. R stands for Repaired. It means the vehicle has been repaired, often after an accident. RA is a variation that typically indicates the repair was more extensive or that there are still some defects present. These cars can be a gamble. Some R cars have only had a bumper or door replaced, and if the repair was done well, they can be a bargain. But many have structural damage or poor repairs. Unless you have a trusted inspector on the ground, it's usually best to avoid R and RA.

Which Grades Are Safe to Import?

For most overseas buyers, grades 6, 5, 4.5, and 4 are safe to import. They represent cars in good to excellent condition with no major issues. Grade 3.5 can be safe if the auction sheet shows only cosmetic problems and the price is right. Grades 3 and below are generally not recommended for daily driving—they often have mechanical issues or significant damage. R and RA are risky; only consider them if you can verify the repair quality and have an expert inspect the car.

Tips for Reading Auction Sheets

The overall grade is just one part of the picture. Always look at:

A reputable exporter such as GULJI TRADERS can provide a full translation and help you interpret the sheet. Never bid on a car without understanding every mark.

Final Thoughts

Understanding Japanese auction grades is key to a successful import. Aim for grade 4 or higher for peace of mind. If you're considering a lower grade or an R/RA car, do your homework and ask your exporter for detailed photos and explanations. With the right guidance, you can find a great used car from Japan.


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