← Alle Ratgeber

Buying a used car , Know your car , Paperwork and ownership · Aktualisiert 2026-10-18

Signs of odometer fraud and how to spot them

The mileage shown on the dashboard is one of the main things buyers look at, and for that reason it is also one of the most tempting numbers to manipulate. A car that shows fewer kilometres than it has really driven looks younger and is worth more to the unwary buyer. You cannot always prove a rollback, but you can learn to notice when the story does not add up.

Why it matters

Mileage affects the price and also tells you how worn parts are likely to be. A car with false low mileage may soon need expensive work, such as a gearbox, clutch, suspension or engine parts, that its apparent age did not suggest. Altering the odometer is also illegal in most places.

Wear that does not match the number

Start with the car itself. The interior and the controls wear in a fairly predictable way. Compare them to the displayed mileage.

• A heavily worn driver's seat, shiny steering wheel or gear knob on a car with low mileage.
• Worn pedal rubbers or a smooth, shiny clutch and brake pedal.
• A sagging driver's seat bolster and cracked leather.
• Worn buttons whose symbols have faded.
• Stone chips and scratches on the front that suggest many motorway kilometres.

Keep in mind that a car can wear unevenly. Some cars are used hard for few kilometres, such as short city trips. So treat wear as a clue, not as proof.

Paper and digital records

Records are your strongest evidence, so gather as many as you can.

• The service book with stamps and dates, as explained in the service book. Check that the mileage rises sensibly from one entry to the next.
• Invoices from workshops, tyre changes and repairs, which often note the mileage.
• Inspection reports from earlier years.
• Stickers on the door frame, under the bonnet or on the windscreen showing the mileage at an oil change.
• Earlier advertisements for the same car, if you can find them.

Look for gaps, mileage that goes down, or a very long period with no records. The VIN lets you check what you can about a car's history; try our VIN checker, and read reading a VIN. Some countries have shared records of recorded mileage. Rules differ by country, check with the competent authority about what you can look up.

Inconsistencies in the car's electronics

On many modern cars, several control units store their own mileage or service data. A workshop with the right diagnostic equipment can sometimes compare these values with the dashboard figure. If you are buying an expensive car, this is a useful reason to pay for an independent inspection.

Warning signs in the seller's behaviour

• Vague answers about where the car has been used and who owned it.
• Missing service book or an explanation that "it was lost".
• A price that is much lower than comparable cars with a similar number on the dashboard, or a story that is just a little too good.
• Reluctance to let you have the car checked.
• A fresh dashboard or instrument cluster replacement that is not documented.

Be careful with the idea that a suspicious seller is always a liar. Sometimes a dashboard was changed for an honest reason. The point is that the change should be documented and the mileage explained.

What to do if you suspect fraud

1. Do not accuse the seller. Ask calmly for proof, such as invoices or records.
2. Ask for an independent inspection of the car.
3. If doubts remain, walk away. There are many other cars on the market.
4. If you already bought the car, keep all documents and seek advice from the competent authority or a consumer organisation in your country.

Protect yourself when you buy

Use the buying checklist and the inspection guide. Where you can, include the stated mileage in the written agreement. See also signs of accident repair, since cars with hidden histories often hide more than one thing.

Why the digital age did not end the problem

It is tempting to believe that electronic odometers cannot be changed. In reality, the numbers are stored in memory that can sometimes be altered with the right tools, and mileage can also be presented wrongly in other ways, for example by swapping an instrument cluster or by quoting a figure from a different unit. Always check whether the display is in kilometres or miles, especially on cars that came from abroad. A mismatch is sometimes an honest mix-up and sometimes an excuse.

The safest approach is not to rely on one number, but on a pattern: records, wear, history and the behaviour of the seller all pointing in the same direction.

What to remember

• Compare the number on the dashboard with the wear you see.
• Ask for records and check that the mileage rises logically.
• Check the VIN history where you can.
• A very cheap car with surprisingly low mileage deserves extra suspicion.
• When in doubt, get an independent opinion or walk away.

Documents Inspection Scams Service history Used car VIN