How to check a used car's MOT history
Published 9 October 2026 · reviewed 9 October 2026
In one paragraph
Go to the free MOT history service on GOV.UK and type in the registration: you get every test, pass or fail, the advisories and the mileage recorded each time. Read it newest first, looking for repeat advisories, a year with no test at all, and mileage that does not climb steadily.
The MOT history is the closest thing a used car has to a medical record, and it is free to anyone with the registration number. It is written by testers who had no interest in selling you the car, which is exactly why it is worth more than any advert. Here is how to read one properly.
Where do I check a used car's MOT history?
On GOV.UK, free, with nothing but the registration number. Anyone can check a vehicle's MOT history there and see each test's result, the advisories and failures recorded, and the mileage at every test. You do not need the seller's permission and you do not need to be at the car. Do it before you book a viewing, not after — it takes a couple of minutes and it is the cheapest way to rule a car out.
What does an MOT history actually show?
Four things per test: the date, whether it passed or failed, the mileage the tester read off the clock, and the notes — advisories on a pass, and the items that caused a failure. Put together over several years, those four things tell you how the car was used, how quickly problems were dealt with, and whether the mileage story holds up.
How should I read an MOT history?
Read it newest first, then read it again oldest first. Going backwards from the latest test tells you what shape the car is in now. Going forwards from the oldest tells you the story: steady mileage and small advisories dealt with promptly looks like a car someone cared for; big failures, long gaps and the same advisory year after year looks like a car that was only ever patched up to get through.
Work down this list:
- The latest test: a pass with no advisories is a genuinely good sign.
- Repeat advisories: the same item flagged two or three years running means nobody fixed it.
- Failure items: corrosion, suspension and brake failures matter more than a blown bulb.
- Mileage: does it climb at a sensible, steady rate?
- Gaps: a year with no test at all.
- The first test date: it should sit near the car's third birthday.
What do MOT advisories mean?
An advisory means the tester saw something wearing out but not yet bad enough to fail — so it is a list of the car's next bills, in order. "Brake disc worn, pitted or scored", "tyre worn close to the legal limit" and "slight play in a suspension joint" are all advisories that become work soon afterwards. One or two on an older car is completely normal. The thing to look for is the advisory that appears on the next test as well: that is the one that was read, ignored, and is still there.
Can MOT mileage show a car has been clocked?
It can show you when the numbers do not add up, which is the first sign worth taking seriously. Because every test records the mileage, the history gives you a mileage reading for most years of the car's life. If one year is lower than the year before it, or a car jumps 30,000 miles in one year and 2,000 in the next three, that needs explaining before anything else happens. A clean, steadily climbing set of readings is good evidence — not proof, because the gaps between tests are not covered, but good evidence.
What does a gap in a car's MOT history mean?
A missing year usually means the car was off the road, not that something was hidden — but it is a question to ask. Cars go untested because they were stored, because they were waiting on a repair nobody wanted to pay for, or because they were sitting on a drive after a bereavement. Each of those leaves a different car behind. A car that sat for two years may need tyres, brakes and a battery regardless of its mileage. Ask the seller which it was, and see whether the answer matches the advisories on the test either side of the gap.
What does the first MOT date tell me?
It tells you whether the history you are looking at is complete. In England and Wales a car needs its first MOT by the third anniversary of its registration and then every year. So a three-year-old car with no tests is perfectly normal, a six-year-old car should have about three, and a ten-year-old car with two tests on record is telling you most of its life was spent off the road or untested.
Does ONECARS show MOT history on its car pages?
Yes — every one of our car pages, for any car old enough to have been tested, shows its MOT history from the DVSA, test by test, with the mileage recorded at each test. We put it there because we would rather you read it than take our word for anything. Alongside it, every car is checked on 34 points by ONEFIX, our own workshop on the same site at Plas Acton, Wrexham — the list is published at how we check our cars. Where that check finds work outstanding, the car is not handed over to its buyer until ONEFIX has put it right; that is a rule in our system, not a promise from a salesperson.
A long history is where this is most useful. The 2010 Volkswagen Polo 1.2 S 60 at £2,995 has years of tests on its page: you can see what it was pulled up for, what came back a second time, and how its mileage climbed, without asking us a thing.
What should I do with what I find?
Turn the history into questions, and ask them before you agree anything. Print it or screenshot it, mark the repeat advisories and any odd mileage reading, and bring that list to the viewing — our guide to buying a used car in Wrexham covers the local side of it, and delivery explains how a car reaches you if you would rather not travel to the forecourt. If the answers stack up and you want time to think, a reservation holds one of our cars for fourteen days and the fee is refunded in full if you cancel for any reason within those fourteen days; if you go ahead it comes off the price.
Two last practical points for the drive home: a car must be insured before it is driven on a public road, including the drive home after buying it, and vehicle tax does not transfer with the car — the new keeper has to tax it before it is driven, which can be done online with the V5C reference. After that, ONEFIX next door handles the servicing, repairs and MOTs, so the next entry in that history is written by the workshop that checked the car in the first place.
You can browse the current used cars and check any registration that catches your eye before you come out, or ring the office on 01978 356983 — or use contact — and we will read the history with you.