Does Mileage Affect Car Value? The Real Numbers

The mileage benchmark that sets expectations

The UK market works off an implicit average of around 10,000 miles a year. A five year old car showing 50,000 miles reads as completely normal. The same car at 90,000 miles looks heavily used, even with a perfect service history behind it. That average shifts by use case: it climbs toward 15,000 for cars bought mainly for long motorway commutes, and drops toward 6,000 to 8,000 for a small car that rarely leaves town.

What a mileage gap actually costs, in pounds

The price gap between two otherwise identical cars doesn't move mile by mile, it moves in bands of roughly 10,000. On a common family car priced around 12,000 pounds, the effect on the market tends to look like this.

High mileage: what matters more than the number itself

High mileage isn't automatically a bad sign. A car that's covered most of its miles on the motorway often ages better than a low mileage runabout doing short, cold journeys and heavy stop start traffic. What actually decides the price is whether the mileage lines up with the age, the service record, and the MOT history.

• A full service history closes a lot of the gap a high mileage figure opens up on its own.
• A cambelt changed at the right interval matters a great deal past 60,000 to 80,000 miles, depending on the manufacturer's schedule.
• A clean MOT history with no repeated advisories removes most of the remaining doubt over real condition.
• Motorway miles generally wear an engine less than the same distance covered in short urban trips.

The clocking check

A mileage that looks unusually low for the car's age is always worth double checking. Pull the car's full MOT history free on gov.uk using just the reg plate, and compare the mileage reading at each test against what's showing now. A drop or an inconsistent jump between tests is the clearest sign of a tampered odometer. Full walkthrough of the process in how much is my car worth.

Low mileage: a real advantage, with two exceptions

A car that's covered fewer miles than average tends to sell faster and for more money. Two situations still deserve a closer look. A car left sitting unused for long stretches can suffer from parts that degrade at rest, seals, tyres, the battery, even while the odometer barely moves. And a mileage that's too low for the car's age with no obvious explanation can also point to an ex fleet or ex company car brought back under a different keeper history.

Work out the effect on your own car

1. Work out the average annual mileage: total mileage divided by the car's age in years.
2. Compare that figure against the 10,000 mile benchmark for a typical family car.
3. Estimate the gap in thousands of miles above or below that average.
4. Apply the matching percentage from the table above to the model's base valuation.
5. Adjust the final figure for service history and visible condition before settling on an asking price.

That range is a starting point, not a final figure, since it doesn't account for real transactions happening near you right now. For a complete valuation that factors in age, condition and local demand alongside mileage, start with how much is my car worth.