Does the MG GS fail the MOT on noise, emissions and leaks more than it should?
The MG GS records 1.83 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 0.90 expected for a car of the same age mix: more than expected for its class and age (+0.93, 95% interval +0.70 to +1.15). It ranks 144 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 MG GS by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the MG GS is “Lambda coefficient outside the default limits or the range specified by the manufacturer”, recorded 91 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 91 | 0.68 |
| Engine MIL illuminated indicating a malfunction | 73 | 0.54 |
| Emissions test unable to be completed | 34 | 0.25 |
| An induction or exhaust leak that could affect emissions levels | 33 | 0.25 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 13,417 (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
MG GS 2016 · MG GS 2017 · MG GS 2018 · MG GS 2019 · MG GS by postcode area · MG GS body, chassis and structure failures · MG GS brakes failures · MG GS vehicle identification failures · MG GS lamps, reflectors and electrics failures · MG GS seat belts and airbags failures · MG GS suspension failures · MG GS tyres failures · MG GS visibility failures