VIN (vehicle identification number)
Also: vehicle identification number, chassis number
The 17-character code that identifies one individual vehicle, used to look up its history, recalls and registration independently of any listing.
On Sauto.cz sellers can hide the VIN on the page while the listing data still carries it; the Sauto.cz Actor returns dealer VINs with a `vin_hidden_on_site` flag and withholds a VIN a private seller hid. Autohero's detail page carried it on 100% of 759 measured cars.