Does the Mercedes-Benz G-Class fail the MOT on lamps, reflectors and electrics more than it should?
The Mercedes-Benz G-Class records 10.68 lamps, reflectors and electrics failure items per 100 initial MOT tests (2019–2024), against 10.95 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) (−0.27, 95% interval −1.14 to +0.60). It ranks 300 of 729 models on lamps, reflectors and electrics (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on lamps, reflectors and electrics · check a Mercedes-Benz G-Class by registration
What exactly fails on lamps, reflectors and electrics?
The most frequent DVSA defect wording in this group on the Mercedes-Benz G-Class is “The aim of a headlamp is not within limits laid down in the requirements”, recorded 198 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| The aim of a headlamp is not within limits laid down in the requirements | 198 | 3.55 |
| A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | 46 | 0.82 |
| Lamp emitted colour, position or intensity not in accordance with the requirements | 45 | 0.81 |
| An obligatory rear fog lamp missing, or a front or rear fog lamp inoperative or in the case of a multiple light source more than 1/2 not functioning | 38 | 0.68 |
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 noise, emissions and leaks 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