What is average UK car mileage? And does it matter?

A mileage figure on an ad often triggers more instinct than analysis: low is good, high is bad. The truth is considerably more nuanced, and getting it right is worth real money whether you are buying or selling.

The UK average: 7,400 miles per year

Across all UK cars in 2025, the average annual mileage was around 7,400 miles per vehicle. That is down slightly from pre-pandemic highs near 8,000, reflecting more working from home and more urban car ownership without heavy commuting.

So a typical five-year-old UK car has roughly 37,000 miles on the clock. A ten-year-old car should sit around 74,000 miles. These are averages, and significant variation either side is perfectly normal.

Averages vary by fuel, use and owner type

The headline number hides big sub-group differences:

• Company cars average 12,000 to 18,000 miles per year, especially diesels used by field staff or sales reps.
• Private petrol cars average 6,500 to 8,500 miles per year.
• Private diesels average 8,000 to 10,500 miles per year (people tend to buy diesel when they know they drive a lot).
• EVs average 9,000 to 11,000 miles per year (commuter cars with low per-mile costs).
• Second cars / low-use households can average as little as 3,000 to 5,000 miles per year.

How mileage affects value

As a rough rule for UK cars in the £5,000 to £20,000 bracket, every 10,000 miles above the expected level for the car's age knocks £250 to £800 off the value, depending on the model. Every 10,000 miles below the expected level adds a smaller amount, typically £150 to £400, because buyers discount the risk that the odometer is telling the truth.

The relationship is not linear:

• Up to roughly 1.5x the age-appropriate mileage, there is a gentle penalty.
• Above roughly 1.5x, value drops sharply because the car moves out of "cared-for" into "high-use" territory, which attracts fewer buyers.
• Above roughly 2x, you are in "trade-only" territory and private sale becomes very hard.

Why super-low mileage is not always good

A ten-year-old car with 15,000 miles on the clock sounds like a bargain. Often it is, but it carries hidden risks:

• Seals and rubbers dry out if unused. Door seals, boot seals, handbrake cables, turbo oil seals, head gasket rubber. On a car that barely moves, these age faster than they wear out.
• Brakes corrode and seize if parked up. A car used for the weekly shop often has severely rusted discs.
• Battery life is short without regular charging runs. Both 12V batteries on conventional cars and HV batteries on EVs age faster when not used.
• Tyres harden and crack with age. A 2016 car with its original tyres at 20,000 miles probably needs them replaced anyway.
• Fluids degrade over time, not just mileage. Brake fluid absorbs moisture. Power steering fluid and coolant have life limits.

A garaged, well-used second car that does 8,000 moderate miles a year, all warm long runs, is often mechanically better than a barely-driven car of the same age that only ever did five-mile school runs on cold engines.

Why high mileage is not always bad

A well-maintained motorway-miles diesel at 150,000 miles is often in better mechanical condition than a 60,000-mile urban petrol. Long warm runs at constant revs are what engines are engineered for. Short cold runs in stop-start traffic are what kills them.

When evaluating a high-mileage car:

• Check the service history for consistent intervals. High mileage with religious servicing is fine; high mileage with skipped services is not.
• Ask about the typical journey profile. Motorway miles on a diesel: good. Short urban petrol miles with heavy use: be cautious.
• Look for evidence of big wear-items already done: clutch, timing belt, brakes, suspension. A 130,000-mile car where these have been replaced recently is effectively low-mileage from a reliability perspective.

Mileage and selling: what to do about it

If your car has high mileage

Lean into it. Be specific in your ad: "Mostly motorway miles, full service history at 10,000-mile intervals, clutch and belt done at 90k, new tyres all round at 105k." Buyers overlook high mileage if the context is reassuring.

Pricing: be realistic. Most buyers filter listings by mileage, so a £200 price cut to sit below a psychological threshold (say 100,000) may double your listing views. Occasionally the opposite helps: if you can legitimately sit below 30,000 miles on a 7-year-old car, advertise that prominently.

If your car has low mileage

Have the paperwork to prove it. A full MOT history with consistent odometer growth is the simplest protection. If you have had work done on items that go off with age (new tyres, fresh brake fluid, battery replaced), mention it, because wary buyers will worry about those things.

Consider a pre-sale service if the car has not had one for a while, even if the manufacturer's interval has not been reached by miles. The service stamp and a clean oil level reassure the kind of buyer who pays top money.

How moValue treats mileage

When you value a car on moValue, we pull the latest MOT odometer reading from DVSA, calculate your annual average, compare it to the UK norm for your car's age, and factor all of that into the valuation. We also flag anomalies like mileage going backwards (a potential clocking indicator) and suspiciously low cumulative mileage for the vehicle's age.

That way you see a mileage-aware valuation rather than a one-size-fits-all number.