UMZE AUTOHAUS
Japanese auction grading system
Buyer Education

Japanese Auction Grading System Explained

December 24, 2025
12 min read

Japanese auctions can feel confusing to first-time importers. Auction sheets look complex with codes, grades, and diagrams that seem like a foreign language. However, understanding these documents is crucial before you bid on any vehicle.

At UMZE Autohaus, we've helped hundreds of buyers navigate Japanese auctions. We've seen costly mistakes made when people bid without properly reading auction sheets. Whether you are starting your journey into Japanese car imports Australia or hunting for top-quality JDM cars for sale in Australia, this guide will help you understand what you're looking at and avoid those expensive errors.

Understanding Overall Grades

S / 6 / 5Near-new condition. Minimal wear, often low kilometres.
4.5 / 4 / 3.5Good used condition. Normal wear for age and kilometres.
3Heavily used. Significant wear but still driveable.
RAMinor accident repair. Structural work completed to standard.
RMajor accident or structural damage. Requires careful assessment.

Interior Grades Explained

Grade ALike new. Minimal wear, clean, no stains or damage.
Grade BGood condition. Normal wear for kilometres, minor scuffs.
Grade CNoticeable wear. Some stains, worn seats, but functional.
Grade DHeavy wear. Significant damage, tears, or smells.

Common Exterior Codes

  • A1–A3: Scratches (A1 light, A3 noticeable)
  • U1–U3: Dents (U1 small, U3 larger dents)
  • W: Paint waves or panel misalignment
  • S: Rust spots or rust-related issues
  • X: Panel replacement

Need Expert Verification?

Don't risk your money on a misread auction sheet. Our team provides professional translation and verification services for all Japanese imports.

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