How Many Miles Is Too Many on a Used Car?

By Matthew Croxford · 4 Oct 2026 · Updated 20 Oct 2026

Short answer: There is no official cut-off. Under 60,000 miles is low to average, 60,000 to 100,000 is a sensible middle ground, 100,000 to 150,000 counts as high, particularly on smaller petrol cars, and 150,000 plus is genuinely high, though far from a death sentence for a well-maintained diesel built for motorway work. History matters more than the number.

There's no law, no DVLA rule and no MOT regulation that says a car becomes unroadworthy once it passes a certain number on the clock. Plenty of 150,000-mile motorway diesels are in better mechanical shape than a 40,000-mile car that's spent its life doing short, cold starts round town. So the honest answer to 'how many miles is too many' is: it depends on the car, how it's been looked after, and what you're planning to do with it. That said, some figures should make any buyer look a lot harder before handing over a deposit, and this guide sets out where those lines genuinely sit.

Here's what actually matters when you're weighing up a higher-mileage used car in the current market, and the checks worth doing before you commit.

Is there an official 'too many miles' cut-off?

No. There's no government threshold, no insurer-wide rule and no DVSA limit that writes a car off simply for covering a lot of ground. The MOT test itself doesn't care how many miles a car has done; it only cares whether the car in front of the tester is safe and roadworthy on the day. A private car needs its first MOT once it turns three years old, and then annually after that, regardless of mileage.

What mileage does affect is risk. The more miles a component has turned over, the more likely it is to be approaching the end of its working life, whether that's a clutch, a set of suspension bushes, a timing belt or a diesel particulate filter. High mileage doesn't condemn a car; it just means you should expect, and budget for, more wear-related work sooner rather than later.

What counts as high mileage in 2026

As a rough guide that most people in the trade would recognise:

Under 60,000 miles is generally considered low to average for a car of typical age.
60,000 to 100,000 miles is a sensible middle ground where most family cars sit through their mid-life.
100,000 to 150,000 miles starts to count as high mileage, particularly on smaller petrol cars.
150,000 miles and beyond is genuinely high, though far from a death sentence for a well-maintained diesel built for motorway work.

It depends heavily on fuel type and how the car's used

A diesel engine that's spent its life on long, steady motorway runs will often shrug off six-figure mileages better than a small petrol engine used for short urban trips, because stop-start driving causes more wear per mile than a long cruise. Hybrids and electric cars change the conversation again, since much of their drivetrain has fewer moving parts to wear out, though battery condition becomes the bigger question (more on that below).

Mileage against age matters more than mileage on its own

A three-year-old car with 90,000 miles has clearly worked hard, probably as a company car or daily motorway commuter, and that's not automatically a problem if it's been serviced on time. A thirteen-year-old car with only 40,000 miles sounds appealing, but long periods of inactivity can bring their own issues, from perished rubber seals to a fuel system that's sat unused. Look at the ratio, not just the headline number.

Why how the miles were covered matters more than how many there are

Two cars with identical mileage can be in completely different condition depending on their history. A car that's done 100,000 motorway miles with a single careful owner and a full service record is usually a safer bet than one that's done 60,000 miles across five owners with patchy stamps in the book. Consistent, well-documented use tends to beat a lower number with a messy history.

What high mileage does to value and depreciation

Mileage is one of the biggest levers on a used car's resale value, alongside age, condition and specification. As a car crosses certain mileage bands, typically 60,000, 100,000 and 150,000, the asking price tends to step down, sometimes more sharply than age alone would suggest. If you're trying to work out what a particular car ought to be worth before you negotiate, our free reg lookup tool gives you an indicative market valuation alongside the car's MOT history, DVLA details and any outstanding safety recalls, simply from the number plate.

Remember that any online valuation is a guide only, not a guaranteed sale price; it will move with the car's actual condition, specification and the state of the wider used car market, so always check the figure against similar cars currently for sale.

What to check before buying a high-mileage used car

MOT and advisory history

A car's MOT record is one of the most honest documents you'll find, because garages log it at the point of test and it can't be edited retrospectively. According to GOV.UK, the MOT history service lets you check the past results of a vehicle's MOT tests, including whether it passed or failed and why. Run the plate through our free reg lookup tool before you view the car, and read through every advisory, not just the pass and fail results. Recurring notes about the same component, corrosion or a suspension joint that keeps getting flagged, tell you a lot more than the headline mileage figure ever will.

Background checks: finance, write-offs and previous keepers

High-mileage cars are more likely to have passed through several owners, sometimes including a spell as a fleet, lease or hire vehicle, so it's worth knowing the full background before you buy. A vehicle history check with data provided by Experian will show whether the car is recorded stolen, has been marked as an insurance write-off, still carries outstanding finance, how many previous keepers it's had, and whether it's ever been imported, exported or scrapped. On a car that's covered serious miles, this is a cheap bit of reassurance against a much more expensive mistake.

Physical checks worth doing on the day

Ask to see cambelt or timing chain replacement records if the mileage is approaching the manufacturer's recommended interval; a snapped belt on an interference engine can write off the car.
Check wear on the steering wheel, pedal rubbers, driver's seat bolster and gearknob; heavy wear on a car claiming low mileage is a red flag worth questioning.
Have a trusted independent garage inspect suspension bushes, brakes and the clutch bite point on anything over 100,000 miles.
Take it for a proper test drive, including some motorway speed if possible, listening for knocks, whines or vibration that wasn't mentioned.

High mileage electric and hybrid cars: a different conversation

On a petrol or diesel car, mileage is largely a proxy for mechanical wear. On an electric or plug-in hybrid car, the bigger question is battery health rather than the odometer reading alone, since batteries degrade gradually with age, charging habits and heat exposure as well as distance covered. A high-mileage EV that's mostly been slow-charged at home can still have a healthy battery, while a lower-mileage one that's lived on rapid chargers might not. Ask for a battery health report where the dealer or seller can provide one, and treat it as seriously as you would a cambelt record on a petrol car.

Buying high mileage from a dealer, and financing it

If you're buying a higher-mileage car through a dealer or via the MotifyMe marketplace, rather than privately, spreading the cost over a term can make sense once you've satisfied yourself on the car's history and condition. MotifyMe can introduce you to car finance through an FCA-authorised credit broker, subject to status and affordability. This option only applies when you're buying from a dealer; it isn't available on a private sale, so factor that into how you shop if finance is part of your plan.

Quick checklist before you buy

Work out the mileage-to-age ratio, not just the raw number.
Pull the full MOT history and read every advisory, not just the pass or fail.
Run a vehicle history check for finance, write-off, stolen markers and previous keepers.
Get an independent inspection on anything over 100,000 miles.
On an EV or hybrid, ask about battery health, not just mileage.
Use a market valuation as a guide for negotiation, not a guarantee of price.

A high mileage figure is a prompt to look closer, not a reason to walk away on its own. The cars worth avoiding are the ones with patchy history and no paperwork to back up the claims, whatever the odometer says. For more on buying smart, our guides cover the rest of the used car buying process in detail.

Frequently asked questions

Is there an official mileage limit that makes a car unroadworthy? No. There's no government threshold, insurer rule or DVSA limit based on mileage. The MOT only checks whether the car is safe and roadworthy on the day of the test, regardless of the odometer reading.

At what mileage does a car start being considered high mileage? Under 60,000 miles is generally low to average, 60,000 to 100,000 is a sensible middle ground, 100,000 to 150,000 counts as high mileage, and 150,000 plus is genuinely high.

Does high mileage matter differently for diesel, petrol and electric cars? Yes. Diesels used for long motorway runs often cope better with six-figure mileages than petrol cars used for short trips, while on EVs and hybrids battery health matters more than the odometer reading alone.

When does a private car need its first MOT? A private car needs its first MOT once it turns three years old, and then annually after that, regardless of how many miles it has covered.