Mercedes-Benz G 2015: MOT failure rate for its age
14.3% of 293 MOT tests of the Mercedes-Benz G first registered in 2015 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 192.1 (95% CI 134.0–250.2; 100 = normal for this model at that age): the 2015 Mercedes-Benz G fails more often than other build years of the same model at the same age. This is a rough estimate from a smaller sample.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Failed first time | 14.3 | % | all ages tested | 2019–2024 | 293 |
| Index against this model at the same age (95% CI 134.0–250.2) | 192.1 | index | 100 = normal for this model at that age | 2019–2024 | 293 |
| Rank among this model's 4 build years | 4 | of 4 | 1 = fails least for its age | 2019–2024 | 293 |
| Tested in 2024 | 5 | tests | median 9,762 miles | 2024 | 5 |
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).
How does the 2015 Mercedes-Benz G fail at each age?
Cars built in 2015 were tested at ages 4 to 5 between 2019 and 2024. Each row compares their first-time failure share with what this model normally shows at that age, after allowing for the overall failure level of each test year.
| Age | Tests | Failed, % | 95% interval | Normal for this model at that age, % | Index (100 = normal) |
|---|---|---|---|---|---|
| 4 | 154 (rough estimate) | 13.6 | 9.1–19.9 | 6.6 | 206.3 |
| 5 | 139 (rough estimate) | 15.1 | 10.1–22 | 8.4 | 179.8 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 293 (initial tests) · Method: normal rate = this model's first-time failure share at that age across its build years (cells of 400+ tests), adjusted for each test year's overall level; cells of 30+ tests, under 500 marked rough · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
How does 2015 compare with the years around it?
Among the 4 published build years of the Mercedes-Benz G, 2015 ranks 4 (1 = fails least for its age). 2016: index 166.5.
| Build year | Index (100 = normal) | 95% interval | Verdict | Tests |
|---|---|---|---|---|
| 2015 | 192.1 | 134.0–250.2 | worse (rough estimate) | 293 |
| 2016 | 166.5 | 116.2–216.9 | worse (rough estimate) | 315 |
| 2019 | 101.8 | 82.8–120.8 | no different (rough estimate) | 1,432 |
| 2020 | 119.9 | 91.4–148.4 | no different (rough estimate) | 778 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,818 (initial tests) · Method: observed failures against those expected for the same model at the same ages, test-year level adjusted; verdict follows the printed one-decimal bound · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
How to cite this page
MOT Risk Index (2026). Mercedes-Benz G 2015 MOT statistics (data release dvsa-2024-v2; full dataset motriskindex-families-2024-v5, DOI 10.5281/zenodo.22975051), updated 30 September 2026. motriskindex.co.uk/cars/mercedes-g/2015/
How every figure is calculated: methodology. Age, test year and build year are tied together (age = test year − build year), so the test-year level is taken as observed, not estimated.
Other pages for this model
Mercedes-Benz G 2016 · Mercedes-Benz G 2019 · Mercedes-Benz G 2020 · Mercedes-Benz G in the Netherlands · Mercedes-Benz G by postcode area · Mercedes-Benz G body, chassis and structure failures · Mercedes-Benz G brakes failures · Mercedes-Benz G vehicle identification failures · Mercedes-Benz G lamps, reflectors and electrics failures · Mercedes-Benz G noise, emissions and leaks failures · Mercedes-Benz G steering failures · Mercedes-Benz G suspension failures · Mercedes-Benz G tyres failures · Mercedes-Benz G visibility failures