MOT failure data · 2025
Mazda CX-30 MOT problems
Across every Mazda CX-30 that failed its 2025 MOT, the defect testers recorded most often was condition has a cut in excess of the requirements deep enough to reach the ply or cords, on 15.15% of failure items. The broadest problem area was tyres at 37.64%. These are recorded defects across the model, not a diagnosis of any one car.
Most common Mazda CX-30 MOT failures
| # | Recorded defect | Area | Share |
|---|---|---|---|
| 1 | Condition has a cut in excess of the requirements deep enough to reach the ply or cords | Tyres | 15.15% |
| 2 | Tread depth tread depth below requirements of 1.6mm | Tyres | 14.68% |
| 3 | Brake pads less than 1.5 mm thick | Brakes | 13.81% |
| 4 | Wipers does not clear the windscreen effectively | Visibility | 13.81% |
| 5 | Shock absorbers has a serious fluid leak | Suspension | 6.57% |
| 6 | Malfunction indicator lamp inoperative or indicates a malfunction | Noise, emissions and leaks | 4.6% |
| 7 | Brake discs significantly and obviously worn | Brakes | 4.19% |
| 8 | Condition has ply or cords exposed | Tyres | 2.69% |
Shares are of all recorded failure items for this model, so they sum to less than 100% — a single failed test often records several defects, and the long tail below the top 8 is not shown.
What this means if you are buying one
Use it as a viewing checklist. If you are looking at a Mazda CX-30, these are the areas worth inspecting and worth asking about — and worth reading the car's own MOT history for, since a defect that keeps reappearing as an advisory is a better signal than any model-wide average.
The MOT record also has hard limits: it does not check the engine, clutch or gearbox, and it says nothing about outstanding finance, insurance write-off history, stolen markers or whether the mileage is genuine. Our used Mazda CX-30 buying guide covers what to check beyond the MOT.
Checking a specific Mazda CX-30?
Enter its registration for finance, write-off, stolen, mileage and keeper history.
Other Mazda models
- Mazda MX-5 MOT problems
- Mazda CX-5 MOT problems
- Mazda CX-3 MOT problems
- Mazda Bongo MOT problems
- Mazda RX-8 MOT problems
Mazda CX-30 MOT FAQs
What does a Mazda CX-30 most commonly fail its MOT on?
The single most recorded defect on Mazda CX-30 cars failing their 2025 MOT was "condition has a cut in excess of the requirements deep enough to reach the ply or cords", appearing on 15.15% of failure items.
Does this mean my Mazda CX-30 will fail?
No. This is what testers recorded across every Mazda CX-30 that failed in 2025. It shows where this model tends to need attention, not the condition of any individual car. The Mazda CX-30 passed 93.71% of its initial tests.
How do I see a specific Mazda CX-30's MOT history?
Enter its registration on our free MOT history check to see that car's own test results, advisories and recorded mileages.
See also: Mazda CX-30 MOT pass rate · used Mazda CX-30 buying guide · free MOT history check
Defect counts from the DVSA MOT Anonymised test-item data for 2025 (class 4 initial tests, failure items only — advisories and minor defects excluded), licensed under the Open Government Licence v3.0.