What does an MOT history check show?
When you run a free MOT history check on RegAdvisor, you get the vehicle's previous MOT test results from official DVSA records. The check shows whether the car passed or failed, the recorded mileage, the test date, expiry details and any defects or advisories noted by the tester.
This makes MOT history one of the quickest free ways to understand how a used car has been maintained over time.
Check previous MOT results before you buy
Previous MOT results can reveal patterns that are not obvious from a seller's advert. A single failure for a bulb or tyre may not matter much. Repeated failures for brakes, suspension, corrosion or emissions deserve closer attention.
RegAdvisor turns the raw MOT checker data into a cleaner timeline, so you can scan past test results quickly and decide whether the car looks well cared for.
MOT advisories and failures
MOT defects are grouped by severity. Understanding the difference helps you separate normal wear from meaningful risk.
| Type | What it means | Why it matters |
|---|---|---|
| Dangerous | The vehicle presents an immediate road safety or environmental risk. | A serious warning sign, especially if the same area appears again later. |
| Major | The vehicle failed and the issue must be repaired. | Repeated major defects can suggest neglected maintenance. |
| Minor | A defect that should be repaired but did not cause a failure. | Usually less concerning, but still part of the maintenance picture. |
| Advisory | An item the tester wants the owner to monitor. | Recurring advisories on brakes, tyres, corrosion or suspension can be revealing. |
Mileage history and clocking checks
Every MOT records the vehicle's mileage at the time of the test. A healthy mileage history usually rises steadily over time. Drops, flat periods or very sudden jumps can point to data entry mistakes, long periods off the road or possible mileage tampering.
Tip: MOT mileage is not a complete anti-fraud check, but it is one of the best free signals to review before viewing a used car.
What MOT history does not show
An MOT history check tells you about test results, defects, advisories and mileage. It does not prove a car is free from outstanding finance, theft markers, insurance write-off history or hidden accident damage.
Use MOT history as the free first step. If you are seriously considering a car, combine it with service history, an in-person inspection and any paid provenance checks you trust.
Related MOT guides
Frequently asked questions
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