Does the Mazda CX-7 fail the MOT on noise, emissions and leaks more than it should?
The Mazda CX-7 records 5.80 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 4.69 expected for a car of the same age mix: more than expected for its class and age (+1.11, 95% interval +0.68 to +1.54). It ranks 130 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 CX-7 by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Mazda CX-7 is “Engine MIL illuminated indicating a malfunction”, recorded 217 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Engine MIL illuminated indicating a malfunction | 217 | 1.83 |
| Emissions test unable to be completed | 111 | 0.94 |
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 84 | 0.71 |
| Emissions levels exceed default limits | 57 | 0.48 |
| Smoke opacity levels exceed the manufacturer's specified limit | 42 | 0.35 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 11,865 (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 CX-7 gets a noise, emissions and leaks advisory, how often does it fail next time?
7.2% of Mazda CX-7 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 6,207 miles later (524 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 524 (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 CX-7 2007 · Mazda CX-7 2008 · Mazda CX-7 2009 · Mazda CX-7 2010 · Mazda CX-7 2011 · Mazda CX-7 2012 · Mazda CX-7 by postcode area · Mazda CX-7 body, chassis and structure failures · Mazda CX-7 brakes failures · Mazda CX-7 vehicle identification failures · Mazda CX-7 lamps, reflectors and electrics failures · Mazda CX-7 road wheels failures · Mazda CX-7 seat belts and airbags failures · Mazda CX-7 steering failures · Mazda CX-7 suspension failures · Mazda CX-7 tyres failures · Mazda CX-7 visibility failures