BMW M4 2020: MOT failure rate for its age
11.9% of 2,377 MOT tests of the BMW M4 first registered in 2020 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 103.5 (95% CI 91.4–115.5; 100 = normal for this model at that age): the 2020 build year is no different from other 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 | 11.9 | % | all ages tested | 2019–2024 | 2377 |
| Index against this model at the same age (95% CI 91.4–115.5) | 103.5 | index | 100 = normal for this model at that age | 2019–2024 | 2377 |
| Rank among this model's 7 build years | 5 | of 7 | 1 = fails least for its age | 2019–2024 | 2377 |
| Tested in 2024 | 1145 | tests | median 22,633 miles | 2024 | 1145 |
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).
How does the 2020 BMW M4 fail at each age?
Cars built in 2020 were tested at ages 3 to 4 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) |
|---|---|---|---|---|---|
| 3 | 1,232 | 11.6 | 9.9–13.5 | 11.9 | 97.9 |
| 4 | 1,145 | 12.3 | 10.5–14.3 | 11.2 | 109.7 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,377 (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
What fails most on the 2020 BMW M4?
The most common failure group on cars built in 2020 is tyres: 12.8 items per 100 first tests, against 10.8 across all build years of the BMW M4. These counts are not age-adjusted: cars built in 2020 were tested at ages 3 to 4.
| Failure group | Built 2020, per 100 | All build years, per 100 | Items |
|---|---|---|---|
| Tyres | 12.8 | 10.8 | 316 |
| Visibility | 2.8 | 2.8 | 70 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,460 (initial tests of this build year) · Method: failure items grouped by DVSA's top-level defect groups, per 100 initial tests; groups with 30+ items · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
How does 2020 compare with the years around it?
Among the 7 published build years of the BMW M4, 2020 ranks 5 (1 = fails least for its age). 2019: index 101.5.
| Build year | Index (100 = normal) | 95% interval | Verdict | Tests |
|---|---|---|---|---|
| 2014 | 99.7 | 92.8–106.6 | no different | 5,980 |
| 2015 | 105.2 | 100.1–110.3 | worse | 11,936 |
| 2016 | 100.8 | 95.6–106.0 | no different | 11,020 |
| 2017 | 97.0 | 91.8–102.3 | no different | 10,614 |
| 2018 | 104.1 | 97.8–110.4 | no different | 8,372 |
| 2019 | 101.5 | 93.7–109.3 | no different | 5,454 |
| 2020 | 103.5 | 91.4–115.5 | no different (rough estimate) | 2,377 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 55,753 (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). BMW M4 2020 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/bmw-m4/2020/
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
BMW M4 2014 · BMW M4 2015 · BMW M4 2016 · BMW M4 2017 · BMW M4 2018 · BMW M4 2019 · BMW M4 in the Netherlands · BMW M4 by postcode area · BMW M4 body, chassis and structure failures · BMW M4 brakes failures · BMW M4 vehicle identification failures · BMW M4 lamps, reflectors and electrics failures · BMW M4 noise, emissions and leaks failures · BMW M4 road wheels failures · BMW M4 seat belts and airbags failures · BMW M4 steering failures · BMW M4 suspension failures · BMW M4 tyres failures · BMW M4 visibility failures