MOT failure data · 2025
Infiniti Q30 MOT problems
Across every Infiniti Q30 that failed its 2025 MOT, the defect testers recorded most often was coil spring fractured or broken, on 10.92% of failure items. The broadest problem area was suspension at 31%. These are recorded defects across the model, not a diagnosis of any one car.
Most common Infiniti Q30 MOT failures
| # | Recorded defect | Area | Share |
|---|---|---|---|
| 1 | Coil spring fractured or broken | Suspension | 10.92% |
| 2 | Linkage ball joint dust cover ball joint dust cover no longer prevents the ingress of dirt | Suspension | 10.67% |
| 3 | Tread depth tread depth below requirements of 1.6mm | Tyres | 9.11% |
| 4 | Brake pads less than 1.5 mm thick | Brakes | 6.43% |
| 5 | Ball joint dust cover ball joint dust cover no longer prevents the ingress of dirt | Suspension | 4.68% |
| 6 | Malfunction indicator lamp inoperative or indicates a malfunction | Noise, emissions and leaks | 4.12% |
| 7 | Condition has a cut in excess of the requirements deep enough to reach the ply or cords | Tyres | 3.49% |
| 8 | Position lamp not working | Lamps, reflectors and electrical equipment | 3.12% |
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 Infiniti Q30, 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 Infiniti Q30 buying guide covers what to check beyond the MOT.
Checking a specific Infiniti Q30?
Enter its registration for finance, write-off, stolen, mileage and keeper history.
Other Infiniti models
Infiniti Q30 MOT FAQs
What does a Infiniti Q30 most commonly fail its MOT on?
The single most recorded defect on Infiniti Q30 cars failing their 2025 MOT was "coil spring fractured or broken", appearing on 10.92% of failure items.
Does this mean my Infiniti Q30 will fail?
No. This is what testers recorded across every Infiniti Q30 that failed in 2025. It shows where this model tends to need attention, not the condition of any individual car. The Infiniti Q30 passed 82.21% of its initial tests.
How do I see a specific Infiniti Q30'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: Infiniti Q30 MOT pass rate · used Infiniti Q30 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.