Glossary
Mileage Rollback (Odometer Fraud)
Tampering with a vehicle's odometer to display a lower mileage than the car has actually covered. A criminal offence in every EU country.
Definition
Mileage rollback, also called odometer fraud or odometer tampering, is the act of altering a vehicle's recorded mileage to show a lower number than the car has actually covered. On digital odometers, rollback is done by reprogramming the instrument cluster — a process that takes about ten minutes and is performed with an OBD-II tool that costs a few hundred euros on the open market. Detection relies on cross-checking the displayed mileage against historical records: prior inspection readings (UK MOT, German HU, Czech STK and similar), service stamps, and the snapshots that some manufacturers store in modules other than the cluster (gateway, BCM, transmission). The European Commission estimates rollback affects a meaningful share of cross-border used-car sales and the figure rises sharply on imports.
Why it matters when buying a used car
Cross-border rollback is the single most common used-car fraud. A car shipped between two countries usually loses its inspection-history trail in the destination country, which is precisely why a multi-country mileage check matters.
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Often confused with
Odometer
The instrument that records total distance covered by a vehicle. Digital on every car built since the late 1990s.
MOT
The UK's annual roadworthiness test, mandatory for cars over three years old. Records mileage and any defects on a public-access history.
HU
Germany's biennial roadworthiness inspection. TÜV is the largest of several authorised inspection bodies; HU (Hauptuntersuchung) is the formal name of the test.
VIN cloning
Stamping the VIN of a legitimate vehicle onto a stolen or written-off vehicle to give it a clean apparent identity.