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Lexus CT 2015: MOT failure rate for its age

13.1% of 21,232 MOT tests of the Lexus CT 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 93.7 (95% CI 90.2–97.1; 100 = normal for this model at that age): the 2015 Lexus CT fails less often than other build years of the same model at the same age.

Lexus CT built in 2015 at a glance
MeasureValueUnitCompared withYearsTests
Failed first time13.1%all ages tested2019–202421232
Index against this model at the same age (95% CI 90.2–97.1)93.7index100 = normal for this model at that age2019–202421232
Rank among this model's 10 build years5of 101 = fails least for its age2019–202421232
Tested in 20243507testsmedian 67,773 miles20243507
line · Lexus CT built 2015 · first-time MOT failure share by age · built 2015 11.2% vs model normal 11.4% at age 4 · 2019–2024
Built 2015 against Lexus CT normal for the age: first-time MOT failure share at each age, age 4: 11.2% vs 11.4%; age 5: 12.8% vs 11.9%; age 6: 12% vs 13.5%; age 7: 13% vs 14.2%; age 8: 14.1% vs 16.4%; age 9: 15.8% vs 16.8%. Axis from 0% to 20%. DVSA MOT bulk data, 2019–2024.
Check a 2015 Lexus CT by registration · All Lexus CT 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 Lexus CT 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.

Lexus CT 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)
43,69611.210.2–12.211.498.2
53,44512.811.8–1411.9108
63,5181211–13.113.588.8
73,5311311.9–14.114.291.1
83,53514.113–15.316.486.2
93,50715.814.6–1716.893.8

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 21,232 (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 Lexus CT?

The most common failure group on cars built in 2015 is tyres: 6.2 items per 100 first tests, against 6.1 across all build years of the Lexus CT. These counts are not age-adjusted: cars built in 2015 were tested at ages 4 to 9.

Failure items per 100 first tests, Lexus CT built 2015 against the Lexus CT in all build years (2019–2024, not age-adjusted)
Failure groupBuilt 2015, per 100All build years, per 100Items
Tyres6.26.11,313
Visibility4.95.31,038
Brakes2.83.7593
Lamps, reflectors and electrical equipment2.46517
Suspension0.51.7110

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 21,232 (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 10 published build years of the Lexus CT, 2015 ranks 5 (1 = fails least for its age). 2014: index 87.1. 2016: index 93.1.

Lexus CT build years: index against the model at the same age (2019–2024)
Build yearIndex (100 = normal)95% intervalVerdictTests
2011105.5102.5–108.5worse22,789
2012106.7103.7–109.6worse25,535
2013119.8116.3–123.4worse22,304
201487.184.0–90.2better22,927
201593.790.2–97.1better21,232
201693.189.1–97.2better17,873
201787.983.5–92.4better15,524
201893.087.5–98.6better11,044
201997.889.5–106.2no different5,812
202096.283.0–109.4no different (rough estimate)2,559

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 167,599 (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). Lexus CT 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/lexus-ct/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

Lexus CT 2011 · Lexus CT 2012 · Lexus CT 2013 · Lexus CT 2014 · Lexus CT 2016 · Lexus CT 2017 · Lexus CT 2018 · Lexus CT 2019 · Lexus CT 2020 · Lexus CT in Finland · Lexus CT by postcode area · Lexus CT body, chassis and structure failures · Lexus CT brakes failures · Lexus CT vehicle identification failures · Lexus CT lamps, reflectors and electrics failures · Lexus CT noise, emissions and leaks failures · Lexus CT road wheels failures · Lexus CT seat belts and airbags failures · Lexus CT steering failures · Lexus CT suspension failures · Lexus CT tyres failures · Lexus CT visibility failures