Buying a used car in Britain is rarely about one perfect advert. It is about reducing surprises before you travel, hand over a deposit or sign anything. Official MOT history is one of the few independent records you can read in minutes: pass and fail results, advisories, recorded mileage and how often the same defects keep returning. Used Car Checker turns that public DVSA data into a free look-up and comparison view so you can shortlist cars at home instead of guessing from photos alone.
This hub gathers the guides we write around that check. None of them replace a physical inspection, a paid finance or stolen-vehicle search where you need one, or professional advice. They do explain how to read a test history without overclaiming, how to weigh advisories against asking price, and when a pattern in the record should stop a deal cold. We write in British English for private buyers and small traders who want clear steps, worked examples and honest limits on free data.
A sensible order for most buyers is: run a free MOT history check on every registration you are seriously considering, compare the shortlist side by side, then read the guide that matches the question in front of you — advisories, red flags, motorbikes, age from the plate, or a printable viewing checklist. If a seller will not share a registration, treat that as a reason to walk away before you invest travel time.
We update these pages when DVSA wording, tax rules or our own scoring method change, and we mark worked examples as invented so they are never mistaken for real vehicles. If something looks wrong or unclear, tell us on the contact page and we will correct it. Use the cards below to jump straight to the guide you need.
Core MOT and buying guides
How to read MOT history
Pass/fail, mileage trail, advisories and what history cannot prove — before you travel to a viewing.
What an MOT checks
The legal test versus engine, clutch and gearbox — with links to the official DVSA manuals.
Private seller vs dealer
Two checklists, shared red flags, and why MOT history comes first either way.
Service history vs MOT
What “full service history” actually means next to the DVSA test record.
Used car buying guide
End-to-end process for UK private and dealer purchases: paperwork, viewings, MOT history and when a free check is not enough.
Compare MOT history
How to put up to five registrations side by side on pass/fail, advisories, mileage trend and reliability score before you travel.
Motorbike MOT check
What bike MOT history shows, how it differs from cars, and what advisories matter most when you only have two contact patches.
Worked buying example
A step-by-step invented hatchback purchase: reading tests, pricing advisories and deciding whether to view or walk away.
MOT advisories explained
Minor, major and dangerous categories in plain English, plus how ignored advisories turn into tomorrow’s repair bill.
MOT history red flags
Patterns that should pause a deal: mileage quirks, repeat failures, last-minute passes and other warning signs in the record.
Checklists and related reading
Used car checklist
A free printable list for the viewing and paperwork so you do not forget tyres, service books or the questions that catch out sellers.
Car fails MOT — what to do
Legal driving limits after a fail, retest rules and how to plan repairs without turning a failed test into a bigger problem.
How to check a car’s age
Reading UK registration plates and supporting records so the advertised age matches what the identity documents say.
How our reliability score works
Method and limits of the score we show next to MOT history — useful as a filter, never as a substitute for reading the tests.
Car mileage check
How MOT mileage readings help spot clocking, what flat or falling figures mean, and when to demand service paperwork.
Full car check
Where free MOT history ends and paid provenance, finance and stolen checks begin, so you know what you are paying for.
Start with a free MOT history check
Enter a UK registration on the homepage to see pass/fail history, advisories, mileage trend and our reliability score — then come back to the guide that matches what you found.
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