Dacia Logan 2017: MOT failure rate for its age
23.4% of 12,249 MOT tests of the Dacia Logan first registered in 2017 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 97.8 (95% CI 94.2–101.4; 100 = normal for this model at that age): the 2017 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 | 23.4 | % | all ages tested | 2019–2024 | 12249 |
| Index against this model at the same age (95% CI 94.2–101.4) | 97.8 | index | 100 = normal for this model at that age | 2019–2024 | 12249 |
| Rank among this model's 8 build years | 3 | of 8 | 1 = fails least for its age | 2019–2024 | 12249 |
| Tested in 2024 | 2316 | tests | median 60,533 miles | 2024 | 2316 |
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).
How does the 2017 Dacia Logan fail at each age?
Cars built in 2017 were tested at ages 3 to 7 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 | 2,892 | 19 | 17.6–20.5 | 20.3 | 93.7 |
| 4 | 2,358 | 20.9 | 19.3–22.6 | 22.4 | 93.1 |
| 5 | 2,353 | 23.2 | 21.5–24.9 | 24 | 96.6 |
| 6 | 2,330 | 26.9 | 25.1–28.7 | 26.3 | 102.4 |
| 7 | 2,316 | 28 | 26.2–29.9 | 27.4 | 102.1 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 12,249 (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 2017 Dacia Logan?
The most common failure group on cars built in 2017 is lamps, reflectors and electrical equipment: 11.5 items per 100 first tests, against 13.3 across all build years of the Dacia Logan. These counts are not age-adjusted: cars built in 2017 were tested at ages 3 to 7.
| Failure group | Built 2017, per 100 | All build years, per 100 | Items |
|---|---|---|---|
| Lamps, reflectors and electrical equipment | 11.5 | 13.3 | 1,427 |
| Visibility | 9.1 | 9.3 | 1,131 |
| Tyres | 5.7 | 6.7 | 708 |
| Brakes | 4.7 | 6.5 | 579 |
| Suspension | 3 | 5.9 | 375 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 12,445 (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 2017 compare with the years around it?
Among the 8 published build years of the Dacia Logan, 2017 ranks 3 (1 = fails least for its age). 2016: index 94.1. 2018: index 102.1.
| Build year | Index (100 = normal) | 95% interval | Verdict | Tests |
|---|---|---|---|---|
| 2013 | 91.4 | 85.1–97.7 | better (rough estimate) | 2,706 |
| 2014 | 103.1 | 99.9–106.2 | no different | 13,300 |
| 2015 | 107.3 | 104.5–110.1 | worse | 18,849 |
| 2016 | 94.1 | 91.3–97.0 | better | 17,128 |
| 2017 | 97.8 | 94.2–101.4 | no different | 12,249 |
| 2018 | 102.1 | 97.3–106.9 | no different | 7,325 |
| 2019 | 104.6 | 99.4–109.7 | no different | 7,037 |
| 2020 | 100.6 | 90.1–111.2 | no different (rough estimate) | 1,684 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 80,278 (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). Dacia Logan 2017 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/dacia-logan/2017/
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
Dacia Logan 2013 · Dacia Logan 2014 · Dacia Logan 2015 · Dacia Logan 2016 · Dacia Logan 2018 · Dacia Logan 2019 · Dacia Logan 2020 · Dacia Logan in Finland · Dacia Logan in the Netherlands · Dacia Logan by postcode area · Dacia Logan body, chassis and structure failures · Dacia Logan brakes failures · Dacia Logan vehicle identification failures · Dacia Logan lamps, reflectors and electrics failures · Dacia Logan noise, emissions and leaks failures · Dacia Logan road wheels failures · Dacia Logan seat belts and airbags failures · Dacia Logan steering failures · Dacia Logan suspension failures · Dacia Logan tyres failures · Dacia Logan visibility failures