What this check shows you
The results come straight from two official sources, so there is nothing scraped or second-hand:
- DVLA Vehicle Enquiry Service supplies the vehicle basics: make, colour, fuel type, first registration, tax status and due date, MOT status and expiry
- DVSA MOT History supplies every MOT test since 2005: pass or fail, advisories, defects and the recorded mileage at each test
We plot the mileage readings on a timeline. A healthy car shows a steady upward line. Any reading lower than the one before it is flagged in red as a possible clocking warning, worth a closer look before you hand over money.
How to read the mileage timeline
Mileage should only ever go up. A flagged reading does not always mean fraud: testers occasionally mistype a number, and a replaced instrument cluster can reset the display. But it always deserves an explanation.
- One odd reading that corrects itself at the next test is usually a typing error
- A drop that sticks across later tests is the classic sign of a clocked car
- Very low annual mileage on an older car is worth verifying against service records
If anything looks off, ask the seller for invoices and service history that back up the numbers, and walk away if the story does not add up.
Buying a used EV? Check the battery too
The MOT does not test battery health, and the battery is the most valuable component on an electric car. Two things protect you:
- The manufacturer battery warranty. Most makers cover the battery for 8 years or 100,000 miles, whichever comes first, typically against dropping below about 70% of original capacity. This check shows the car’s age so you can work out what cover is left.
- An independent battery health check. A garage with EV diagnostic equipment can read the battery’s state of health directly and tell you how much of the original range remains.
For any used EV outside its first few years, a battery health check before purchase is the single best money you can spend. It turns the biggest unknown into a number.
Assumptions and accuracy
Data comes live from official DVLA and DVSA records and can lag a recent test or tax change by a few days. Battery warranty terms are typical industry figures: check your manufacturer’s own terms for the exact cover.
These figures are estimates, not a guarantee. Last updated 2026-07-18.