Using MOT Data When Buying a Second-Hand Car
Thinking of buying a used car? Don’t sign on the dotted line until you’ve checked its MOT history. This impartial record can reveal hidden issues, verify mileage, and help you negotiate a fair price.
Look for Continuous Annual MOTs
A reliable used car should show an MOT test every 12 months. If you see gaps—especially if a car’s driven while the MOT is expired—it could mean the previous owner skipped a year of testing. That raises questions about unseen problems (rust, engine trouble) and potential fines if you drive without a valid MOT.
Compare Mileage Readings
Each MOT entry logs the odometer reading at test time. Extract those mileages and look for:
- Unexpected drops (a sign of tampering)
- Huge jumps (could mean an error or dishonest reporting)
Consistent mileage progression is a green light. If you see a rollback, ask the seller for service records or consider a professional inspection.
Spot Recurring Faults
Review advisory notes over several years. For example:
|
Year
|
Result
|
Advisory Item
|
Estimated Repair Cost
|
|---|---|---|---|
|
2022
|
Advisory
|
Brake pad wear
|
£80
|
|
2023
|
Advisory
|
Brake pad wear
|
£80
|
|
2024
|
Pass
|
-
|
-
|
Repeated advisories on the same component (like brakes, exhaust, or suspension) could signal a larger problem or procrastinated repairs. Factor that into your budget or negotiate a lower price.
Check for Major Failures on Safety-Critical Items
If an MOT certificate has a “fail” on items such as structural chassis corrosion or dangerous brake faults, treat with extreme caution. Either walk away from the deal or insist on a significant discount to cover the cost of repairs. Anything labelled “dangerous” usually requires immediate attention—do not ignore it.
Gauge Future Maintenance Costs
Use past advisory notes to anticipate what will need replacing next:
- Worn suspension bushes often need replacement every 8–10 years.
- Tyres below 3mm tread might need changing within six months.
- Minor exhaust leaks can escalate into costly repairs.
When negotiating, say something like:
“I’ve noticed the MOT advisory flagged an oil leak last year—could I take £200 off the price to cover that repair?”
Real-Life Scenario
Sarah nearly bought a hatchback that looked perfect—until the MOT history revealed emission failures for three years running. She walked away and chose a different car, saving herself over £1,500 in exhaust and emission repairs.
By checking MOT data first, you avoid surprises and make a smarter purchase.
Tip: Always cross-reference the seller’s claimed service history with the DVSA MOT database. It’s an independent source you can trust.
If you’d like Car Friend to carry out a pre-purchase inspection (PPI) or just need advice on interpreting MOT entries, drop by or give us a call. We’re here to help you make an informed decision.