Mazda CX-5 2018: MOT failure rate for its age
12.5% of 40,455 MOT tests of the Mazda CX-5 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 97.3 (95% CI 94.7–100.0; 100 = normal for this model at that age): the 2018 build year is no different from other years of the same model at the same age.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Failed first time | 12.5 | % | all ages tested | 2019–2024 | 40455 |
| Index against this model at the same age (95% CI 94.7–100.0) | 97.3 | index | 100 = normal for this model at that age | 2019–2024 | 40455 |
| Rank among this model's 9 build years | 2 | of 9 | 1 = fails least for its age | 2019–2024 | 40455 |
| Tested in 2024 | 10079 | tests | median 47,371 miles | 2024 | 10079 |
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).
How does the 2018 Mazda CX-5 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 | 10,123 | 9.8 | 9.2–10.3 | 9.9 | 98.6 |
| 4 | 10,138 | 12 | 11.4–12.7 | 12.1 | 99.2 |
| 5 | 10,115 | 14.2 | 13.5–14.9 | 14.1 | 100.8 |
| 6 | 10,079 | 14.1 | 13.4–14.8 | 15.3 | 91.9 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 40,455 (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 Mazda CX-5?
The most common failure group on cars built in 2018 is visibility: 6.8 items per 100 first tests, against 6.8 across all build years of the Mazda CX-5. 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 |
|---|---|---|---|
| Visibility | 6.8 | 6.8 | 2,780 |
| Tyres | 4.9 | 5.1 | 2,019 |
| Brakes | 3.8 | 5.3 | 1,554 |
| Lamps, reflectors and electrical equipment | 1.9 | 3.5 | 775 |
| Suspension | 1.4 | 6.2 | 585 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 40,831 (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 9 published build years of the Mazda CX-5, 2018 ranks 2 (1 = fails least for its age). 2017: index 94.7. 2019: index 98.6.
| Build year | Index (100 = normal) | 95% interval | Verdict | Tests |
|---|---|---|---|---|
| 2012 | 99.0 | 95.0–103.0 | no different | 9,254 |
| 2013 | 106.8 | 104.5–109.1 | worse | 32,808 |
| 2014 | 99.0 | 96.9–101.1 | no different | 42,382 |
| 2015 | 105.0 | 102.7–107.3 | worse | 43,323 |
| 2016 | 104.3 | 101.9–106.8 | worse | 42,958 |
| 2017 | 94.7 | 92.0–97.3 | better | 37,661 |
| 2018 | 97.3 | 94.7–100.0 | no different | 40,455 |
| 2019 | 98.6 | 95.4–101.9 | no different | 30,764 |
| 2020 | 99.5 | 94.0–105.1 | no different | 11,483 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 291,088 (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). Mazda CX-5 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/mazda-cx-5/2018/
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
Mazda CX-5 2012 · Mazda CX-5 2013 · Mazda CX-5 2014 · Mazda CX-5 2015 · Mazda CX-5 2016 · Mazda CX-5 2017 · Mazda CX-5 2019 · Mazda CX-5 2020 · Mazda CX-5 in Norway · Mazda CX-5 in Finland · Mazda CX-5 in the Netherlands · Mazda CX-5 by postcode area · Mazda CX-5 body, chassis and structure failures · Mazda CX-5 brakes failures · Mazda CX-5 vehicle identification failures · Mazda CX-5 lamps, reflectors and electrics failures · Mazda CX-5 noise, emissions and leaks failures · Mazda CX-5 road wheels failures · Mazda CX-5 seat belts and airbags failures · Mazda CX-5 steering failures · Mazda CX-5 suspension failures · Mazda CX-5 tyres failures · Mazda CX-5 visibility failures