Does the Mercedes-Benz G-Class fail the MOT on noise, emissions and leaks more than it should?
The Mercedes-Benz G-Class records 2.38 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 2.42 expected for a car of the same age mix: about as expected for its class and age (the difference is within its interval or under 0.5 items per 100 tests) (−0.04, 95% interval −0.44 to +0.37). It ranks 276 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 Mercedes-Benz G-Class by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Mercedes-Benz G-Class is “Engine MIL illuminated indicating a malfunction”, recorded 52 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Engine MIL illuminated indicating a malfunction | 52 | 0.93 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 5,580 (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
Mercedes-Benz G-Class by postcode area · Mercedes-Benz G-Class body, chassis and structure failures · Mercedes-Benz G-Class brakes failures · Mercedes-Benz G-Class vehicle identification failures · Mercedes-Benz G-Class lamps, reflectors and electrics failures · Mercedes-Benz G-Class seat belts and airbags failures · Mercedes-Benz G-Class steering failures · Mercedes-Benz G-Class suspension failures · Mercedes-Benz G-Class tyres failures · Mercedes-Benz G-Class visibility failures