Odometer tampering is the most common fraud when buying a used car. According to estimates, one in three vehicles on the German market has a mileage that has been wound back or digitally manipulated. The costs: up to €300 for the tampering – and for the buyer often several thousand euros in damage and loss of value.
How does odometer tampering work?
In the past, the odometer was mechanically “zurückgedreht” (wound back). Today it works differently: with an OBD diagnostic tool (like every garage uses) and the right software, the mileage of many vehicles can be changed in 15–30 minutes. There's a market for such devices – and the number of unreported cases is high.
Modern vehicles store the mileage in several control units. This makes tampering harder – but not impossible. Experienced manipulators know all the storage locations.
7 signs that point to odometer tampering
- Wear doesn't match the mileage: the steering wheel, pedals (especially the accelerator), driver's seat and door trim show more wear than the stated mileage would suggest.
- Oil change sticker contradicts the odometer: there are often oil change stickers with mileage and date in the engine bay. If, according to the sticker, the last oil change was at 142,000 km but the ad states 89,000 km, something's wrong.
- Service entries don't match: service book entries at mileages too high relative to the current odometer reading. Or too few entries for the mileage – dealers of tampered vehicles sometimes also buy fake service book stamps.
- Gaps in the maintenance history: gaps of several years without proof of service are suspicious – especially if the mileage has barely increased over the same period.
- Vehicle history via VIN shows earlier mileages: services like CARFAX or AutoDNA show MOT/roadworthiness test (TÜV) records, repair reports and reported mileages from the past. A contradiction with the current odometer is clear proof.
- Several previous owners in a short time: vehicles that frequently change hands have often been deliberately sold on – sometimes with fresh odometer tampering each time.
- Unrealistically low mileage for the vehicle model: a taxi or rental car being sold as a normal private vehicle with 40,000 km. Or a vehicle from a big city with supposedly low mileage.
How can you protect yourself?
- Check the ad: InseratCheck analyses the ad text for plausibility of the mileage – relative to service details and vehicle age.
- VIN check: ask for the vehicle identification number (VIN) and check it via CARFAX, AutoDNA or similar services. They hold MOT/roadworthiness test (TÜV) mileage records and repair histories.
- Check the service book: read the mileage at each entry and compare it with the current reading. Look out for irregularities or missing periods.
- Independent garage inspection: a good garage can use an OBD tool to detect inconsistencies in the control units – reliable, but only possible on site.
- Assess the wear: take a look at the steering wheel, pedals, seat upholstery and door handles. Trust your eyes more than the odometer.
What happens if you buy a tampered vehicle?
Odometer tampering is fraud – a criminal offence under § 263 StGB (fraud) and § 22b StVG (manipulation of vehicle data). The seller is liable for damages under civil law. The problem: evidence is hard to come by, the seller is often out of reach, and court cases take time. Prevention is the better way.
More on typical fraud patterns: Typical scams in car ads – a complete overview.
Frequently asked questions about odometer tampering
Is odometer tampering a criminal offence?
Yes. Odometer tampering constitutes fraud (§ 263 StGB) and is also punishable under § 22b StVG. Penalties range from fines to imprisonment. Under civil law, the seller is liable for damages.
How widespread is odometer tampering?
Very. Estimates by the ADAC and associations of automotive experts assume that one in three used vehicles in Germany has a tampered mileage. Particularly affected: imported vehicles and vehicles with an incomplete service history.
Can InseratCheck reliably detect odometer tampering?
InseratCheck can check the mileage for plausibility – relative to vehicle age and service details. That's not a technical guarantee. Certainty comes from combining the InseratCheck analysis, a VIN check and an independent garage inspection.