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Mitsubishi ASX 2018: MOT failure rate for its age

12.2% of 8,959 MOT tests of the Mitsubishi ASX 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 93.4 (95% CI 87.8–98.9; 100 = normal for this model at that age): the 2018 Mitsubishi ASX fails less often than other build years of the same model at the same age.

Mitsubishi ASX built in 2018 at a glance
MeasureValueUnitCompared withYearsTests
Failed first time12.2%all ages tested2019–20248959
Index against this model at the same age (95% CI 87.8–98.9)93.4index100 = normal for this model at that age2019–20248959
Rank among this model's 11 build years2of 111 = fails least for its age2019–20248959
Tested in 20242220testsmedian 42,388 miles20242220
line · Mitsubishi ASX built 2018 · first-time MOT failure share by age · built 2018 10.4% vs model normal 10% at age 3 · 2019–2024
Built 2018 against Mitsubishi ASX normal for the age: first-time MOT failure share at each age, age 3: 10.4% vs 10%; age 4: 12.6% vs 12.6%; age 5: 12.4% vs 14.6%; age 6: 13.6% vs 15.3%. Axis from 0% to 20%. DVSA MOT bulk data, 2019–2024.
Check a 2018 Mitsubishi ASX by registration · All Mitsubishi ASX 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 2018 Mitsubishi ASX 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.

Mitsubishi ASX built 2018: 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)
32,27410.49.2–11.710103.3
42,25412.611.3–1412.6100.1
52,21112.411.1–13.814.685.2
62,22013.612.2–15.115.388.7

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 8,959 (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 Mitsubishi ASX?

The most common failure group on cars built in 2018 is visibility: 5.9 items per 100 first tests, against 6.6 across all build years of the Mitsubishi ASX. These counts are not age-adjusted: cars built in 2018 were tested at ages 3 to 6.

Failure items per 100 first tests, Mitsubishi ASX built 2018 against the Mitsubishi ASX in all build years (2019–2024, not age-adjusted)
Failure groupBuilt 2018, per 100All build years, per 100Items
Visibility5.96.6536
Brakes3.612.1325
Tyres3.54.9321
Lamps, reflectors and electrical equipment2.15.6193
Suspension1.69.1143

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 9,061 (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 11 published build years of the Mitsubishi ASX, 2018 ranks 2 (1 = fails least for its age). 2017: index 95.6. 2019: index 85.1.

Mitsubishi ASX build years: index against the model at the same age (2019–2024)
Build yearIndex (100 = normal)95% intervalVerdictTests
2010106.0102.6–109.4worse11,100
201198.795.6–101.8no different13,875
201295.191.9–98.4better13,494
2013106.0102.6–109.4worse15,065
2014109.6106.6–112.6worse23,005
201599.796.9–102.5no different27,639
201697.894.3–101.3no different19,286
201795.692.1–99.1better20,995
201893.487.8–98.9better8,959
201985.177.7–92.6better4,826
202098.587.9–109.0no different (rough estimate)3,059

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 161,303 (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). Mitsubishi ASX 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/mitsubishi-asx/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

Mitsubishi ASX 2010 · Mitsubishi ASX 2011 · Mitsubishi ASX 2012 · Mitsubishi ASX 2013 · Mitsubishi ASX 2014 · Mitsubishi ASX 2015 · Mitsubishi ASX 2016 · Mitsubishi ASX 2017 · Mitsubishi ASX 2019 · Mitsubishi ASX 2020 · Mitsubishi ASX in Norway · Mitsubishi ASX in Finland · Mitsubishi ASX in the Netherlands · Mitsubishi ASX by postcode area · Mitsubishi ASX body, chassis and structure failures · Mitsubishi ASX brakes failures · Mitsubishi ASX vehicle identification failures · Mitsubishi ASX lamps, reflectors and electrics failures · Mitsubishi ASX noise, emissions and leaks failures · Mitsubishi ASX road wheels failures · Mitsubishi ASX seat belts and airbags failures · Mitsubishi ASX steering failures · Mitsubishi ASX suspension failures · Mitsubishi ASX tyres failures · Mitsubishi ASX visibility failures