Does the BMW M6 fail the MOT on noise, emissions and leaks more than it should?
The BMW M6 records 2.51 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 3.24 expected for a car of the same age mix: less than expected for its class and age (−0.73, 95% interval −1.12 to −0.34). It ranks 406 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 BMW M6 by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the BMW M6 is “Lambda coefficient outside the default limits or the range specified by the manufacturer”, recorded 58 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 58 | 0.70 |
| Emissions levels exceed default limits | 49 | 0.59 |
| Engine MIL illuminated indicating a malfunction | 46 | 0.55 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 8,323 (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
BMW M6 by postcode area · BMW M6 body, chassis and structure failures · BMW M6 brakes failures · BMW M6 vehicle identification failures · BMW M6 lamps, reflectors and electrics failures · BMW M6 steering failures · BMW M6 suspension failures · BMW M6 tyres failures · BMW M6 visibility failures