Why does a used car need checking before you buy it?
Because what you can't see is where the risk sits. A used car can look clean and drive smoothly on a short test drive and still be carrying a dangerous fault, an MOT due in a few weeks, or advisories the seller never mentioned. A proper check before you hand over money protects you, not the seller — and it costs nothing to start.
What does a free MOT history check actually show?
It shows the test history for that exact vehicle, including every advisory ever recorded against it, going back years. You can run this check yourself, for free, on the government's own service, using nothing more than the registration number. This is the single most useful few minutes you can spend before viewing a used car, because it tells you what an MOT tester has already flagged, long before you've agreed anything with the seller or put down a deposit.
What does an MOT advisory actually mean for a car you're about to buy?
An advisory is not a fail. It's the tester's note that something will need attention before too long, not proof the car is unsafe to drive today. That distinction matters when you're reading a used car's history. A car with no advisories at all isn't automatically a better buy than one with a well-documented advisory for, say, tyre wear — what matters is whether that advisory has since been dealt with, or whether it keeps reappearing test after test, which can suggest it was noted but never actually fixed.
Could the car be undriveable the moment you buy it?
Yes, if its last MOT recorded a dangerous defect. A dangerous fault found at test means the vehicle legally must not be driven again until it's repaired — and that includes driving it home on the day you buy it. Checking the MOT history before you buy tells you whether this applies, so you're not caught out with a car you've just paid for that you can't legally move off the seller's drive.
When is the car's next MOT actually due?
Work it out from the registration date, not from guesswork or what the seller tells you. A car needs its first MOT three years after it was first registered, and every year after that. If the car is close to that anniversary and nobody's mentioned it, you're effectively buying something that needs testing almost immediately — worth knowing before you agree a price, not after you've paid it.
Does a high number of advisories mean the car is a bad buy?
Not on its own — it means you read them properly before deciding. A long advisory history can simply mean a well-used, honestly-tested car; a short one can mean a car that's barely been looked at properly. What matters is the pattern: repeated advisories on the same component, a jump from no advisories to several at once, or an advisory that's now overdue to be sorted. None of that shows up in a five-minute viewing — only in the history.
What happens if you bring it to ONEFIX before you commit?
You get a written, photographed record of exactly what we find, not just a verbal "it's fine." Every job at ONEFIX — including a look-over on a car you're thinking of buying — starts with a digital vehicle health check, with photographs, so you can see precisely what's underneath rather than take anyone's word for it. And if anything would need doing, we quote it in writing before any work starts, so there's nothing sprung on you after the fact.
What should you do right now?
Before you view the car, run its free MOT history check online using the registration number, and read through the advisories, not just the pass or fail. Work out when its next MOT falls due. Then, before you hand over any money, book it in with ONEFIX at Plas Acton Garage on Chester Road, Wrexham for a proper look and a written record of what we find. It's a lot cheaper than finding out afterwards.