Does the Mazda Eunos fail the MOT on noise, emissions and leaks more than it should?
The Mazda Eunos records 13.65 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 8.94 expected for a car of the same age mix: more than expected for its class and age (+4.71, 95% interval +3.73 to +5.70). It ranks 38 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 Eunos by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Mazda Eunos is “Emissions levels exceed default limits”, recorded 294 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Emissions levels exceed default limits | 294 | 5.46 |
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 139 | 2.58 |
| Emissions levels exceed the manufacturer's specified limits | 127 | 2.36 |
| Emissions test unable to be completed | 67 | 1.24 |
| Emission control equipment fitted by the manufacturer missing, obviously modified or obviously defective | 36 | 0.67 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 5,383 (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 Mazda Eunos gets a noise, emissions and leaks advisory, how often does it fail next time?
11.3% of Mazda Eunos MOTs with a noise, emissions and leaks advisory were followed by a fail in the same group at the next MOT, typically 12.2 months and 1,433 miles later (788 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 788 (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
Mazda Eunos by postcode area · Mazda Eunos body, chassis and structure failures · Mazda Eunos brakes failures · Mazda Eunos vehicle identification failures · Mazda Eunos lamps, reflectors and electrics failures · Mazda Eunos road wheels failures · Mazda Eunos seat belts and airbags failures · Mazda Eunos steering failures · Mazda Eunos suspension failures · Mazda Eunos tyres failures · Mazda Eunos visibility failures