How to Detect Odometer Fraud
Odometer fraud — rolling back the reading on a car's mileage gauge — is a widespread scam in the used car market. While the shift to digital odometers has made tampering harder, it hasn't eliminated it. Always check for these warning signs before buying.
Physical Warning Signs
Steering wheel and pedals: If the steering wheel looks worn and pedals look heavily used at just 50,000 km, something doesn't add up. The steering wheel leather and pedal rubbers are useful physical indicators of real-world mileage.
Seat wear: Original fabric or leather seats develop visible wear in high-contact areas with heavy use. Advanced seat wear on a car claiming 30,000 km should raise suspicion.
Tyres and brake pedal depth: Tyres typically need replacing every 30,000–50,000 km. If the tyres don't match the claimed age and mileage, be cautious. The depth of the brake pedal can also be a clue.
Document Checks
Service records: Every service entry records mileage. Review the service book or digital records in chronological order. Any instance where mileage decreases or increases by an implausibly small amount is a red flag.
Insurance policies: Some policies include an annual mileage declaration. If multiple policies exist, the mileage trend may be inconsistent.
MOT/inspection history: Vehicle inspection records include odometer readings. Where accessible, compare these to the current reading.
Digital Diagnostics
In modern vehicles, mileage is stored not only in the instrument cluster but also in multiple electronic control units — including the ABS module, airbag ECU and engine ECU. An OBD-II reader can compare mileage data across these units. Discrepancies between them are strong evidence of tampering.
CarExp Risk Analysis
CarExp analyzes the typical mileage-to-age relationship for your specific model, service history data and listing patterns to flag unusual odometer readings. The risk alerts in your report clearly identify which areas to focus on before a physical inspection.