Does the Mazda E Series fail the MOT on noise, emissions and leaks more than it should?
The Mazda E Series records 9.01 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 6.99 expected for a car of the same age mix: more than expected for its class and age (+2.02, 95% interval +1.21 to +2.83). It ranks 88 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 Mazda E Series by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Mazda E Series is “Emissions levels exceed default limits”, recorded 133 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Emissions levels exceed default limits | 133 | 2.51 |
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 79 | 1.49 |
| Emissions test unable to be completed | 75 | 1.41 |
| Emissions levels exceed the manufacturer's specified limits | 60 | 1.13 |
| Engine MIL illuminated indicating a malfunction | 41 | 0.77 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 5,304 (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
Other pages for this model
Mazda E Series by postcode area · Mazda E Series body, chassis and structure failures · Mazda E Series brakes failures · Mazda E Series lamps, reflectors and electrics failures · Mazda E Series seat belts and airbags failures · Mazda E Series steering failures · Mazda E Series suspension failures · Mazda E Series tyres failures · Mazda E Series visibility failures