Renault Koleos 2018: MOT failure rate for its age

14.3% of 3,795 MOT tests of the Renault Koleos 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 100.0 (95% CI 91.6–108.5; 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.

Renault Koleos built in 2018 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	14.3	%	all ages tested	2019–2024	3795
Index against this model at the same age (95% CI 91.6–108.5)	100.0	index	100 = normal for this model at that age	2019–2024	3795
Rank among this model's 7 build years	3	of 7	1 = fails least for its age	2019–2024	3795
Tested in 2024	905	tests	median 50,500 miles	2024	905

Built 2018 against Renault Koleos normal for the age: first-time MOT failure share at each age, age 3: 11.1% vs 11.2%; age 4: 15.9% vs 14.5%; age 5: 15.4% vs 15.2%; age 6: 14.8% vs 16.4%. Axis from 0% to 20%. DVSA MOT bulk data, 2019–2024.

Check a 2018 Renault Koleos by registration · All Renault Koleos 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 Renault Koleos 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.

Renault Koleos built 2018: first-time MOT failure by age, against the model's normal rate at that age (2019–2024)
Age	Tests	Failed, %	95% interval	Normal for this model at that age, %	Index (100 = normal)
3	982	11.1	9.3–13.2	11.2	98.8
4	969	15.9	13.7–18.3	14.5	110
5	939	15.4	13.3–17.9	15.2	101.6
6	905	14.8	12.6–17.3	16.4	90.1

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 3,795 (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 Renault Koleos?

The most common failure group on cars built in 2018 is tyres: 6.5 items per 100 first tests, against 7.3 across all build years of the Renault Koleos. These counts are not age-adjusted: cars built in 2018 were tested at ages 3 to 6.

Failure items per 100 first tests, Renault Koleos built 2018 against the Renault Koleos in all build years (2019–2024, not age-adjusted)
Failure group	Built 2018, per 100	All build years, per 100	Items
Tyres	6.5	7.3	252
Brakes	6.3	11.9	241
Visibility	6	7.8	231
Suspension	2.5	20	95
Lamps, reflectors and electrical equipment	1.5	20.6	56

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 3,848 (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 7 published build years of the Renault Koleos, 2018 ranks 3 (1 = fails least for its age). 2017: index 103.6. 2019: index 103.9.

Renault Koleos build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
2008	94.0	87.9–100.1	no different (rough estimate)	1,968
2009	100.4	97.1–103.7	no different	7,238
2010	94.9	82.0–107.8	no different (rough estimate)	463
2017	103.6	95.0–112.2	no different (rough estimate)	3,488
2018	100.0	91.6–108.5	no different (rough estimate)	3,795
2019	103.9	93.9–113.8	no different (rough estimate)	2,987
2020	105.6	87.5–123.7	no different (rough estimate)	979

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 20,918 (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). Renault Koleos 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/renault-koleos/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.

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