MOT history is a free government record that shows every MOT test a UK vehicle has had since the system went digital. For anyone buying a used car, it's one of the most useful checks you can make, and it costs nothing and takes under two minutes.
This guide explains exactly what MOT history shows, how to read it, what red flags to look for, and what it doesn't cover.
What is an MOT Test?
The MOT is an annual safety and emissions test that all vehicles over three years old must pass to remain legally roadworthy in the UK. It's carried out by DVSA-approved testing stations and checks everything from brakes and lights to steering, suspension, and exhaust emissions.
A car that fails its MOT cannot legally be driven on public roads until the failure items are repaired and retested (or it drives directly to a repair garage for that purpose).
What Does MOT History Show?
The DVSA records the following for every MOT test:
- The date of the test
- Whether the vehicle passed or failed
- The mileage recorded at the time of the test
- Any failure items (the specific faults that caused a fail)
- Any advisory items (things that passed this time but need attention)
This record goes back to approximately 2005 for most vehicles, and in some cases earlier. You can check it free using CarMate's MOT checker with the vehicle's registration plate.
Why MOT History Matters for Buyers
When you look at a car's MOT history as a buyer, you're looking for three things: mileage consistency, recurring problems, and the overall condition picture over time.
Mileage Consistency
Every MOT records the odometer reading at the time of the test. A legitimate vehicle shows steadily increasing mileage from test to test. If the mileage ever goes down between tests, the car has been clocked (odometer fraud) and should be avoided. See our full guide on how to spot a clocked car.
| Test date | Result | Mileage | Notes |
|---|---|---|---|
| Mar 2024 | PASS | 67,400 | Normal increase |
| Mar 2023 | PASS | 56,800 | Normal increase |
| Mar 2022 | FAIL/PASS | 38,100 | Normal increase |
| Feb 2021 | PASS | 28,600 | Normal increase |
The mileage records shown above are consistent. Each year adds roughly 9,000-12,000 miles, which is typical for a car that's regularly used.
Recurring Problems
An advisory that appears on two or three consecutive MOTs tells you something. It means the owner has been aware of an issue but hasn't fixed it. Check what advisory items keep appearing and factor the repair cost into your offer.
Failure items that are immediately followed by a pass (at a retest) are generally less concerning: the problem was fixed. But a pattern of similar failures over multiple years suggests a car that's been poorly maintained.
Overall Condition Picture
A clean MOT history with consistent mileage, no failures, and minimal advisories is a positive sign. A history with multiple failures, high advisory counts, and irregular servicing gaps doesn't mean the car is unsellable, but it should be reflected in the price.
What MOT History Does Not Show
MOT history is powerful, but it has limits. It does not show:
- Outstanding finance on the vehicle
- Whether the car has been written off (Category S or N)
- Whether the car has been stolen
- Keeper history or how many owners the car has had
- Any work carried out between MOTs
For these, you need a separate vehicle history check (HPI or similar). CarMate includes MOT history analysis alongside DVLA data, scam signal checking, and pricing as part of every audit.
How to Check MOT History for Free
Use CarMate's free MOT checker and enter the registration. No sign-up required. The full history is displayed instantly alongside mileage trends and a clocking check.
CarMate also pulls MOT history automatically as part of any listing audit. You get the full MOT record alongside a price analysis, fraud signal check, and negotiation tips in a single report.
Reading MOT Advisories: What the Categories Mean
Every defect item has a category:
- Dangerous: An immediate risk to road safety. The vehicle must not be driven.
- Major: A significant defect that caused the MOT to fail. Must be repaired before the vehicle can pass.
- Minor: A defect that doesn't affect safety immediately but is recorded. Vehicle can pass.
- Advisory: An item that's not yet a problem but should be monitored. Vehicle passed, but the issue may become a Major or Dangerous defect in future.
As a buyer, pay closest attention to Dangerous and Major items on recent tests, and to any Advisories that keep appearing year after year. These are the items most likely to cost you money after purchase.