MOT failure data · 2025
MG ZR MOT problems
Across every MG ZR that failed its 2025 MOT, the defect testers recorded most often was component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength, on 6.58% of failure items. The broadest problem area was lamps, reflectors and electrical equipment at 23.98%. These are recorded defects across the model, not a diagnosis of any one car.
Most common MG ZR MOT failures
| # | Recorded defect | Area | Share |
|---|---|---|---|
| 1 | Component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength | Suspension | 6.58% |
| 2 | Joints constant velocity boot split or insecure, no longer prevents the ingress of dirt | Body, chassis, structure | 5.93% |
| 3 | Service brake performance excessively binding | Brakes | 3.61% |
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 3 is not shown.
What this means if you are buying one
Use it as a viewing checklist. If you are looking at a MG ZR, 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 MG ZR buying guide covers what to check beyond the MOT.
Checking a specific MG ZR?
Enter its registration for finance, write-off, stolen, mileage and keeper history.
Other MG models
- MG ZS MOT problems
- MG HS MOT problems
- MG 5 Exclusive MOT problems
- MG TF MOT problems
- MG MGF MOT problems
- MG 5 Excite MOT problems
MG ZR MOT FAQs
What does a MG ZR most commonly fail its MOT on?
The single most recorded defect on MG ZR cars failing their 2025 MOT was "component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength", appearing on 6.58% of failure items.
Does this mean my MG ZR will fail?
No. This is what testers recorded across every MG ZR that failed in 2025. It shows where this model tends to need attention, not the condition of any individual car. The MG ZR passed 72.62% of its initial tests.
How do I see a specific MG ZR'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: MG ZR MOT pass rate · used MG ZR 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.