Peugeot 508 2018: MOT failure rate for its age
14.8% of 1,603 MOT tests of the Peugeot 508 first registered in 2018 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 77.8 (95% CI 67.9–87.7; 100 = normal for this model at that age): the 2018 Peugeot 508 fails less 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 | 14.8 | % | all ages tested | 2019–2024 | 1603 |
| Index against this model at the same age (95% CI 67.9–87.7) | 77.8 | index | 100 = normal for this model at that age | 2019–2024 | 1603 |
| Rank among this model's 10 build years | 1 | of 10 | 1 = fails least for its age | 2019–2024 | 1603 |
| Tested in 2024 | 391 | tests | median 48,644 miles | 2024 | 391 |
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).
How does the 2018 Peugeot 508 fail at each age?
Cars built in 2018 were tested at ages 3 to 6 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 | 409 (rough estimate) | 13.9 | 10.9–17.6 | 17.7 | 78.8 |
| 4 | 407 (rough estimate) | 14.5 | 11.4–18.2 | 18.6 | 78.1 |
| 5 | 396 (rough estimate) | 17.7 | 14.2–21.7 | 17.6 | 100.5 |
| 6 | 391 (rough estimate) | 13.3 | 10.3–17 | 22.6 | 59 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,603 (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 2018 Peugeot 508?
The most common failure group on cars built in 2018 is tyres: 8.1 items per 100 first tests, against 10.4 across all build years of the Peugeot 508. These counts are not age-adjusted: cars built in 2018 were tested at ages 3 to 6.
| Failure group | Built 2018, per 100 | All build years, per 100 | Items |
|---|---|---|---|
| Tyres | 8.1 | 10.4 | 131 |
| Visibility | 5.3 | 6.8 | 86 |
| Lamps, reflectors and electrical equipment | 4.6 | 18.7 | 74 |
| Brakes | 4.2 | 8.7 | 68 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,624 (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 2018 compare with the years around it?
Among the 10 published build years of the Peugeot 508, 2018 ranks 1 (1 = fails least for its age). 2017: index 83.9. 2019: index 105.3.
| Build year | Index (100 = normal) | 95% interval | Verdict | Tests |
|---|---|---|---|---|
| 2011 | 98.9 | 96.5–101.3 | no different | 20,051 |
| 2012 | 103.0 | 100.8–105.2 | worse | 26,179 |
| 2013 | 104.2 | 101.5–106.8 | worse | 19,577 |
| 2014 | 96.4 | 92.5–100.3 | no different | 9,293 |
| 2015 | 88.5 | 83.9–93.0 | better | 6,854 |
| 2016 | 94.9 | 89.7–100.2 | no different | 5,949 |
| 2017 | 83.9 | 76.0–91.8 | better (rough estimate) | 2,491 |
| 2018 | 77.8 | 67.9–87.7 | better (rough estimate) | 1,603 |
| 2019 | 105.3 | 99.7–110.8 | no different | 7,457 |
| 2020 | 112.6 | 104.0–121.2 | worse (rough estimate) | 3,240 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 102,694 (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). Peugeot 508 2018 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/peugeot-508/2018/
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
Peugeot 508 2011 · Peugeot 508 2012 · Peugeot 508 2013 · Peugeot 508 2014 · Peugeot 508 2015 · Peugeot 508 2016 · Peugeot 508 2017 · Peugeot 508 2019 · Peugeot 508 2020 · Peugeot 508 in Norway · Peugeot 508 in Finland · Peugeot 508 in the Netherlands · Peugeot 508 by postcode area · Peugeot 508 body, chassis and structure failures · Peugeot 508 brakes failures · Peugeot 508 vehicle identification failures · Peugeot 508 lamps, reflectors and electrics failures · Peugeot 508 noise, emissions and leaks failures · Peugeot 508 road wheels failures · Peugeot 508 seat belts and airbags failures · Peugeot 508 steering failures · Peugeot 508 suspension failures · Peugeot 508 tyres failures · Peugeot 508 visibility failures