What counts as low mileage for the money?

Low mileage means below the lower quartile for the car's age on the road (DVSA odometer readings), not below a round number. For a ten-year-old car that is under about 55,167 miles against a typical 74,057. Cars advertised for sale run to different figures from the fleet on the road, so our mileage-by-age guide, built from advertised cars, draws its own ordinary range: do not read the two tables against each other. It is not free: across live UK stock, a car on under 60% of normal mileage for its model and age asks about 31% more than the same car on ordinary miles, and one on over 150% asks roughly 29% less.

“Low mileage” is two separate questions wearing one coat. The first is what low actually means for a car of that age, which has a measured answer. The second is what you are being charged for it, which has a different one — and the two rarely get put side by side.

First: what low mileage actually is

Not a round number. The useful definition is positional — below the lower quartile of what cars of that age actually read. These are odometer readings taken at MOT, so they are measured rather than estimated.

Age	Low mileage is under	Typical	High mileage is over
3 years	15,941	23,860	35,264
5 years	26,228	38,570	54,271
8 years	45,278	61,556	80,713
10 years	55,167	74,057	95,588
12 years	63,391	84,652	108,797
15 years	72,533	96,317	124,933

Median and quartile odometer readings at MOT, Great Britain, from 3,393,731 DVSA tests. Half of all cars sit between the two outer columns — that is the range in which a car is simply ordinary.

Second: what it costs

Here is the part that is usually missing. Each car below is compared against other cars of the same make, model and age band, so this is not the difference between a low-mileage Fiesta and a high-mileage Range Rover. Model mix is the confounder that wrecks most published mileage-versus-price tables, and it is controlled here.

What it is not is the effect of the odometer by itself. Within one model and age band, a lower-mileage car also tends to have fewer owners, a fuller service history, less wear and often a higher trim — and those travel with low mileage rather than being caused by it. The figures below are what the market asks for that whole bundle. They are asking prices, too, not sale prices, so treat them as the size of the premium being sought rather than a valuation.

Mileage for its age	Asking price	Versus ordinary
Well below average0–60% of typical	131% of the norm	+31%
Below average60–85% of typical	117% of the norm	+17%
About average85–115% of typical	100% of the norm	—
Above average115–150% of typical	86% of the norm	-14%
Well above averageover 150% of typical	71% of the norm	-29%

Median asking price as a share of the same make, model and age band’s median, across live Autoza stock. Groups smaller than six cars are excluded, and the pattern was checked for stability at three different thresholds before publication.

Why controlling for the model matters. Run the same comparison without it and the premium looks smaller, not larger — because low-mileage cars include a lot of small cheap cars that drag the average down. Model mix was hiding the effect. It is a reminder that a raw mileage-versus-price table, which is what most sites publish, is measuring something else.

So is it worth paying for?

It depends almost entirely on age, and the answer is less flattering to low mileage than most buyers expect. On a young car the odometer makes very little difference to whether it passes an MOT — a few percentage points between the lowest and highest mileage bands at three years old — while the price difference is already large. You are paying a premium for a risk reduction that has not really materialised yet.

On an older car the calculation flips. The gap in first-time MOT pass rates between low and high mileage widens to more than twenty points by fifteen years old, so there the premium is buying something real.

The awkward middle case is the very low mileage old car. Standing still damages a car in ways the odometer never records — perished rubber, seized calipers, a diesel particulate filter that has never got hot enough to clear itself. Check that it was serviced by date as well as by distance.

Working it out for a specific car

Take the first-registration date from the V5C, not the model year in the advert.
Put the age and odometer into the mileage checker, which does the quartile comparison and shows the price position in one step.
If it comes out low, ask what the car was doing. Genuine low use with a full history is worth paying for; a gap of three years in the service record is not.
If it comes out high, check how that model holds up at that mileage — the spread between models is wider than the spread between mileages.

Frequently asked

What is considered low mileage on a used car?

Below the lower quartile for the car's age. For a ten-year-old car that is under roughly 55,167 miles; for a five-year-old, under about 26,228. A round-number rule such as "under 10,000 a year" does not fit that spread: it draws the line at 50,000 miles for a five-year-old, where the upper quartile is 54,271, and at 100,000 for a ten-year-old, where it is 95,588 — so the share of cars it calls high mileage changes with age.

How much more does a low-mileage car cost?

Measured within the same model and age band across live UK stock, a car on under 60% of typical mileage asks about 31% more than one on ordinary miles. The premium tapers smoothly: modestly below average is worth roughly 17% more, and well above average is discounted by about 29%.

Is a low-mileage car worth paying more for?

Sometimes, but the premium is often larger than the benefit. Mileage barely affects MOT outcomes on a young car — the gap between the lowest and highest mileage bands is only a few points at three years old — while the price difference is already substantial. On an older car the mechanical case is much stronger, because the mileage spread in pass rates widens sharply with age.

Can very low mileage be a warning sign?

It can. A car that has sat unused suffers in ways an odometer does not show: perished tyres and rubber, seized brakes, flat spots, degraded fluids and, on a diesel, a particulate filter that has never reached temperature. Look for a service history that shows the car was maintained by date as well as by distance.