Jeep Wrangler 2018: MOT failure rate for its age
15.1% of 1,580 MOT tests of the Jeep Wrangler 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 104.7 (95% CI 91.4–118.0; 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. This is a rough estimate from a smaller sample.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Failed first time | 15.1 | % | all ages tested | 2019–2024 | 1580 |
| Index against this model at the same age (95% CI 91.4–118.0) | 104.7 | index | 100 = normal for this model at that age | 2019–2024 | 1580 |
| Rank among this model's 10 build years | 4 | of 10 | 1 = fails least for its age | 2019–2024 | 1580 |
| Tested in 2024 | 383 | tests | median 36,464 miles | 2024 | 383 |
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).
How does the 2018 Jeep Wrangler 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 | 442 (rough estimate) | 16.1 | 12.9–19.8 | 9.3 | 173.1 |
| 4 | 381 (rough estimate) | 10.5 | 7.8–14 | 11.7 | 89.4 |
| 5 | 374 (rough estimate) | 17.4 | 13.9–21.5 | 14.7 | 118.1 |
| 6 | 383 (rough estimate) | 16.4 | 13.1–20.5 | 22.8 | 72.1 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,580 (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 Jeep Wrangler?
The most common failure group on cars built in 2018 is lamps, reflectors and electrical equipment: 12.4 items per 100 first tests, against 31.3 across all build years of the Jeep Wrangler. 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 |
|---|---|---|---|
| Lamps, reflectors and electrical equipment | 12.4 | 31.3 | 198 |
| Visibility | 6.1 | 9.1 | 97 |
| Suspension | 4.2 | 11.3 | 67 |
| Brakes | 4 | 18 | 63 |
| Noise, emissions and leaks | 2.2 | 3.6 | 35 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,594 (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 Jeep Wrangler, 2018 ranks 4 (1 = fails least for its age). 2017: index 126.7. 2019: index 83.0.
| Build year | Index (100 = normal) | 95% interval | Verdict | Tests |
|---|---|---|---|---|
| 2011 | 89.3 | 66.9–111.7 | no different (rough estimate) | 228 |
| 2012 | 109.9 | 92.1–127.6 | no different (rough estimate) | 472 |
| 2013 | 106.8 | 94.2–119.4 | no different (rough estimate) | 965 |
| 2014 | 108.8 | 99.0–118.6 | no different (rough estimate) | 1,799 |
| 2015 | 107.9 | 100.3–115.5 | worse (rough estimate) | 3,252 |
| 2016 | 115.8 | 104.4–127.2 | worse (rough estimate) | 1,789 |
| 2017 | 126.7 | 112.4–140.9 | worse (rough estimate) | 1,454 |
| 2018 | 104.7 | 91.4–118.0 | no different (rough estimate) | 1,580 |
| 2019 | 83.0 | 71.1–94.9 | better (rough estimate) | 1,924 |
| 2020 | 82.7 | 67.8–97.6 | better (rough estimate) | 1,375 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 14,838 (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). Jeep Wrangler 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/jeep-wrangler/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
Jeep Wrangler 2011 · Jeep Wrangler 2012 · Jeep Wrangler 2013 · Jeep Wrangler 2014 · Jeep Wrangler 2015 · Jeep Wrangler 2016 · Jeep Wrangler 2017 · Jeep Wrangler 2019 · Jeep Wrangler 2020 · Jeep Wrangler in Norway · Jeep Wrangler in the Netherlands · Jeep Wrangler by postcode area · Jeep Wrangler body, chassis and structure failures · Jeep Wrangler brakes failures · Jeep Wrangler vehicle identification failures · Jeep Wrangler lamps, reflectors and electrics failures · Jeep Wrangler noise, emissions and leaks failures · Jeep Wrangler road wheels failures · Jeep Wrangler seat belts and airbags failures · Jeep Wrangler steering failures · Jeep Wrangler suspension failures · Jeep Wrangler tyres failures · Jeep Wrangler visibility failures