Mileage is one of the first things every buyer looks at. But the number on the dashboard only shows what the odometer reads today — not necessarily how far the car has really travelled. A “corrected” odometer can make a 280,000 km car look like it has 140,000 km and sell for several thousand euros more than it is worth.
Why the real mileage matters so much
Mileage directly affects three things: price, wear and future costs. The timing belt, clutch, turbocharger, injectors and suspension all have a lifespan measured in kilometres. If you buy a car believing it has half its real mileage, you will pay for those repairs much sooner than expected.
- Price: on the used market, a 100,000 km difference can mean 20–40% of the car’s value.
- Safety: worn brakes, steering and suspension are not visible at a quick glance.
- Resale: your next buyer may discover the difference — and the loss will be yours.
Signs the mileage has been altered
No single sign proves fraud, but several signs together should make you careful.
1. Interior wear does not match the number
A shiny steering wheel, pedals worn down to the metal, a sagging driver’s seat or a polished gear knob usually appear after 200,000 km or more. If the dashboard shows 120,000 km, ask for an explanation.
2. Service history is missing or has gaps
The service book, invoices and oil-change notes normally record the mileage. Compare them: the kilometres should increase logically from one entry to the next. A service book that was “lost” for exactly the years with the most entries is a warning sign.
3. Stickers and replaced parts
Look for the last oil-change sticker (usually on the door or under the bonnet) and for new parts on a “low-mileage” car: a new steering wheel, new pedals or re-upholstered seats on a 5–6-year-old car can be used to hide wear.
4. Different values in the car’s control units
Many modern cars store the mileage in several electronic modules. A workshop with a diagnostic scanner can compare the values. If the instrument cluster says one thing and the engine or gearbox control unit another, the mileage has most likely been changed.
How a VIN check helps
Every car has a unique 17-character VIN. Vehicle history reports use it to collect records from different sources: technical inspections, auctions, insurers, workshops and registrations. Many of these records include the date and the mileage at that moment.
Put the records in chronological order and you see the mileage “curve”. Normally it keeps rising. If a later record shows lower mileage than an earlier one, the odometer was almost certainly tampered with.
| Date | Source | Mileage |
|---|---|---|
| 03.2019 | Technical inspection | 96,400 km |
| 05.2021 | Auction | 148,900 km |
| 08.2023 | Sale listing | 112,000 km |
The example above is typical: between 2021 and 2023 the mileage “dropped” by almost 37,000 km. A rollback like this is a strong argument in negotiation — or a reason to walk away.
On AutoStat you enter the VIN and see the records available for the car, including the mileage history from connected sources. You can also look at a sample report before paying.
What to do if you find a discrepancy
- Do not pay a deposit until the situation is clear.
- Show the data to the seller and ask for documents explaining the difference (for example, an instrument cluster replacement documented by a workshop).
- Have an independent workshop check the values in the electronic modules and the real technical condition.
- Recalculate the price based on the real mileage, not the displayed one.
- If the seller refuses to explain anything, look for another car. There are plenty of cars with a clear history on the market.
Note: the absence of suspicious records in a report does not guarantee the car is in perfect condition. The report shows what was recorded in the available sources; a technical inspection at a workshop is still essential.
In short
- The dashboard figure is easy to change; a history recorded over the years is much harder to fake.
- Compare interior wear, the service book and the VIN report data.
- Mileage that “goes down” between two records is the clearest sign of fraud.
- Use the discrepancy to negotiate, or walk away from the car.
Before you buy, check the VIN on AutoStat — it takes a few minutes and can save you thousands of euros.
