MOT failure data · 2025
Citroen C4 MOT problems
Across every Citroen C4 that failed its 2025 MOT, the defect testers recorded most often was joints constant velocity boot split or insecure, no longer prevents the ingress of dirt, on 7.91% of failure items. The broadest problem area was lamps, reflectors and electrical equipment at 22.68%. These are recorded defects across the model, not a diagnosis of any one car.
Most common Citroen C4 MOT failures
| # | Recorded defect | Area | Share |
|---|---|---|---|
| 1 | Joints constant velocity boot split or insecure, no longer prevents the ingress of dirt | Body, chassis, structure | 7.91% |
| 2 | Tread depth tread depth below requirements of 1.6mm | Tyres | 4.89% |
| 3 | Coil spring fractured or broken | Suspension | 4.6% |
| 4 | Ball joint ball joint excessively worn | Suspension | 4.35% |
| 5 | Track rod end ball joint has excessive play | Steering | 3.92% |
| 6 | Brake pads less than 1.5 mm thick | Brakes | 3.76% |
| 7 | Linkage ball joint dust cover ball joint dust cover no longer prevents the ingress of dirt | Suspension | 3.63% |
| 8 | Stop lamp not working | Lamps, reflectors and electrical equipment | 3.28% |
| 9 | Registration plate lamp(s) inoperative in the case of a single lamp or all lamps | Lamps, reflectors and electrical equipment | 3.14% |
| 10 | Position lamp not working | Lamps, reflectors and electrical equipment | 2.88% |
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 10 is not shown.
What this means if you are buying one
Use it as a viewing checklist. If you are looking at a Citroen C4, 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 Citroen C4 buying guide covers what to check beyond the MOT.
Checking a specific Citroen C4?
Enter its registration for finance, write-off, stolen, mileage and keeper history.
Other Citroen models
- Citroen C3 MOT problems
- Citroen Berlingo MOT problems
- Citroen C1 MOT problems
- Citroen DS3 MOT problems
- Citroen Dispatch MOT problems
- Citroen C5 MOT problems
Citroen C4 MOT FAQs
What does a Citroen C4 most commonly fail its MOT on?
The single most recorded defect on Citroen C4 cars failing their 2025 MOT was "joints constant velocity boot split or insecure, no longer prevents the ingress of dirt", appearing on 7.91% of failure items.
Does this mean my Citroen C4 will fail?
No. This is what testers recorded across every Citroen C4 that failed in 2025. It shows where this model tends to need attention, not the condition of any individual car. The Citroen C4 passed 68.83% of its initial tests.
How do I see a specific Citroen C4'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: Citroen C4 MOT pass rate · used Citroen C4 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.