In short: new vehicle data comes from the brands themselves, used ads and spare parts come from the sellers who post them, auction records come from Japanese auction houses, and petrol prices come from government releases. Below is where every number on the site comes from, how we check it, and how fresh it is.
Last updated . Written by the AutoOnes team.
New vehicles
Brand websites and contacts
Used ads
The sellers who post them
Spare parts ads
The sellers who post them
Auction records
Japanese auction houses
Petrol prices
Government releases
Tell us. We check it against the source, fix it, and log the correction. On an auction sheet report, tap Report a problem on the report itself.
From each brand's own website, price lists and brochures, confirmed with the brand's sales contacts when prices move.
Yes. Each report is pulled from the Japanese auction house's own record for your chassis number, and shows the original sheet image exactly as stored.
Our system collects the official OGRA-notified rate every night from public price reports, checks it, and keeps the full daily price history.
The sellers themselves. A person on our team reviews every ad before it goes live, but details are the seller's claims until you check them.
More on how we work: Methodology, Transparency and Editorial Policy.