Does the Citroen C4 fail the MOT on noise, emissions and leaks more than it should?
The Citroen C4 records 3.36 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 3.21 expected for a car of the same age mix: about as expected for its class and age (the difference is within its interval or under 0.5 items per 100 tests) (+0.15, 95% interval +0.12 to +0.19). It ranks 230 of 678 models on noise, emissions and leaks (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on noise, emissions and leaks · check a Citroen C4 by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Citroen C4 is “Engine MIL illuminated indicating a malfunction”, recorded 10,762 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Engine MIL illuminated indicating a malfunction | 10,762 | 1.16 |
| Smoke opacity levels exceed the manufacturer's specified limit | 6,377 | 0.69 |
| Smoke opacity levels exceed default limit | 2,231 | 0.24 |
| Emissions test unable to be completed | 2,143 | 0.23 |
| Emissions levels exceed default limits | 1,963 | 0.21 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 929,147 (initial tests) · Method: failure items (major and minor) grouped by DVSA's defect tree; wordings with 30+ items · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
If a Citroen C4 gets a noise, emissions and leaks advisory, how often does it fail next time?
8.2% of Citroen C4 MOTs with a noise, emissions and leaks advisory were followed by a fail in the same group at the next MOT, typically 12 months and 6,137 miles later (31,595 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 31,595 (advisories followed) · Method: the same vehicles followed to their next ordinary MOT · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
Other pages for this model
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