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MINI Roadster 2015: MOT failure rate for its age

17.1% of 6,435 MOT tests of the MINI Roadster first registered in 2015 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 106.5 (95% CI 100.2–112.8; 100 = normal for this model at that age): the 2015 MINI Roadster fails more often than other build years of the same model at the same age.

MINI Roadster built in 2015 at a glance
MeasureValueUnitCompared withYearsTests
Failed first time17.1%all ages tested2019–20246435
Index against this model at the same age (95% CI 100.2–112.8)106.5index100 = normal for this model at that age2019–20246435
Rank among this model's 3 build years2of 31 = fails least for its age2019–20246435
Tested in 20241056testsmedian 46,106 miles20241056
line · MINI Roadster built 2015 · first-time MOT failure share by age · built 2015 11% vs model normal 12% at age 4 · 2019–2024
Built 2015 against MINI Roadster normal for the age: first-time MOT failure share at each age, age 4: 11% vs 12%; age 5: 17.6% vs 15.3%; age 6: 17% vs 16.4%; age 7: 18.2% vs 16.3%; age 8: 20.9% vs 18.2%; age 9: 18% vs 18.3%. Axis from 0% to 30%. DVSA MOT bulk data, 2019–2024.
Check a 2015 MINI Roadster by registration · All MINI Roadster MOT statistics · Download the build-year table (CSV)

Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).

How does the 2015 MINI Roadster fail at each age?

Cars built in 2015 were tested at ages 4 to 9 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.

MINI Roadster built 2015: first-time MOT failure by age, against the model's normal rate at that age (2019–2024)
AgeTestsFailed, %95% intervalNormal for this model at that age, %Index (100 = normal)
41,119119.3–131292
51,04317.615.4–20.115.3115.2
61,0621714.9–19.416.4104
71,09118.216.1–20.616.3112.2
81,06420.918.5–23.418.2114.4
91,0561815.8–20.418.398.6

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 6,435 (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 2015 MINI Roadster?

The most common failure group on cars built in 2015 is lamps, reflectors and electrical equipment: 8.6 items per 100 first tests, against 8.7 across all build years of the MINI Roadster. These counts are not age-adjusted: cars built in 2015 were tested at ages 4 to 9.

Failure items per 100 first tests, MINI Roadster built 2015 against the MINI Roadster in all build years (2019–2024, not age-adjusted)
Failure groupBuilt 2015, per 100All build years, per 100Items
Lamps, reflectors and electrical equipment8.68.7553
Visibility7.67.5491
Tyres6.26.4396
Brakes3.13.5197
Suspension22.4128

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 6,435 (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 2015 compare with the years around it?

Among the 3 published build years of the MINI Roadster, 2015 ranks 2 (1 = fails least for its age). 2014: index 95.5.

MINI Roadster build years: index against the model at the same age (2019–2024)
Build yearIndex (100 = normal)95% intervalVerdictTests
2013115.2103.4–127.0worse (rough estimate)1,753
201495.590.1–100.9no different7,266
2015106.5100.2–112.8worse6,435

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 15,454 (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). MINI Roadster 2015 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/mini-roadster/2015/

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

MINI Roadster 2013 · MINI Roadster 2014 · MINI Roadster by postcode area · MINI Roadster body, chassis and structure failures · MINI Roadster brakes failures · MINI Roadster vehicle identification failures · MINI Roadster lamps, reflectors and electrics failures · MINI Roadster noise, emissions and leaks failures · MINI Roadster road wheels failures · MINI Roadster suspension failures · MINI Roadster tyres failures · MINI Roadster visibility failures