Check a Car Before Buying — 7 Checks Every UK Buyer Should Run
Used car fraud costs UK buyers hundreds of millions of pounds every year. Most of it is entirely preventable with a few simple pre-purchase checks. Here are the seven that matter most.
Check 1 — MOT History via DVSA
The DVSA's MOT history database covers most vehicles back to 2005. Each record shows the test date, pass or fail, mileage, and any advisory or failure items. What to look for: consistent mileage increase over time (any decrease is a clocking red flag), recurring advisory items that suggest neglect, and MOT gaps that imply the car was off the road for an unexplained period.
Check 2 — Tax and SORN Status via DVLA
The DVLA's free vehicle enquiry shows current tax status, MOT expiry, and whether the vehicle is SORN. An untaxed or SORN car requires you to tax it before driving away — road tax does not transfer when ownership changes. Factor this cost in.
Check 3 — Keeper Count
The number of previous registered keepers is in DVLA data. One or two keepers on a five-year-old car is ideal. Five or more in two years is a warning sign. Always check the keeper count against the V5C in person — if the seller says they are the second owner but the V5C shows four previous keepers, that is a discrepancy that needs an explanation.
Check 4 — Outstanding Finance (Most Important)
This is the check that catches the most expensive fraud. If there is an active finance agreement registered against the vehicle, the finance company is the legal owner — not the seller. If you buy the car and the seller defaults on their payments, the lender can repossess the car from you. This is legal and you have no recourse against them. You would need to sue the seller separately.
Outstanding finance is invisible from physical inspection or MOT records. It requires a formal Experian data query. This alone makes a paid full report worth the cost on any vehicle above £1,000.
Check 5 — Insurance Write-Off Status
Insurers categorise written-off vehicles: Cat A (crush only), Cat B (break for parts only), Cat S (structural damage, can be repaired and returned to road), Cat N (non-structural damage, can be repaired). A Cat S or Cat N car is legal to own and drive if properly repaired, but sellers must disclose it and the value should reflect the marker. A Cat A or Cat B car should never be on the road again — if you encounter one, walk away and consider reporting it.
Check 6 — Stolen Marker
If a vehicle is recorded as stolen on the Police National Computer, you could have it seized by police after purchase. You would need to prove you were an innocent buyer — a history check showing no stolen marker at the time of purchase is your main protection. Always check before you pay.
Check 7 — Mileage Verification
Odometer clocking (winding back the mileage) is illegal in the UK but still occurs. The MOT history is your best defence — each MOT records the mileage at the time of the test. If the mileage on the seller's dashboard is lower than a previous MOT record, the car has been clocked. Even a flat progression (mileage barely changing between tests) can indicate tampering or misuse.
Frequently Asked Questions
What checks should I run before buying a used car?
The seven essential checks are: (1) MOT history via DVSA, (2) tax and SORN status via DVLA, (3) keeper count, (4) outstanding finance check, (5) insurance write-off check, (6) stolen marker check, and (7) mileage verification against MOT records.
Which check is most important when buying a used car?
Outstanding finance is typically the highest-risk issue. If you buy a car with active finance, the lender can legally repossess it regardless of what you paid the seller. This risk is invisible without a formal finance check — it will not show up from physical inspection or MOT history.
Should I check a car's history before or after viewing it?
Both. Run a free history check before viewing to identify any obvious red flags that would save you a wasted journey. Then run a full check once you have confirmed the registration matches the V5C and you are seriously considering buying.
What physical checks should I do at the viewing?
Check that the VIN stamped on the car (usually on the dashboard or door sill) matches the V5C. Verify the registration plate matches the V5C. Check all panels for paint shade inconsistencies that suggest accident repair. Look for crash repair filler with a magnet on body panels. Check for water ingress inside.
Does a car with a Cat S or Cat N marker have to be declared?
Sellers are legally obliged to disclose that a vehicle has been an insurance write-off. Failing to disclose this is misrepresentation and gives you grounds to void the sale. Always run a write-off check before buying — many sellers deliberately omit this information.
Run all 7 checks in one report
VEHIXA combines DVLA, DVSA, and Experian AutoCheck data to cover all seven pre-purchase checks. Start free, upgrade to full for finance and write-off data.
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