Toyota Yaris 2018: MOT failure rate for its age

12.9% of 113,018 MOT tests of the Toyota Yaris 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 99.3 (95% CI 97.6–100.9; 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.

Toyota Yaris built in 2018 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	12.9	%	all ages tested	2019–2024	113018
Index against this model at the same age (95% CI 97.6–100.9)	99.3	index	100 = normal for this model at that age	2019–2024	113018
Rank among this model's 22 build years	10	of 22	1 = fails least for its age	2019–2024	113018
Tested in 2024	28095	tests	median 32,373 miles	2024	28095

Built 2018 against Toyota Yaris normal for the age: first-time MOT failure share at each age, age 3: 10.9% vs 9.8%; age 4: 12.6% vs 12.5%; age 5: 13.2% vs 14.1%; age 6: 14.9% vs 15.7%. Axis from 0% to 20%. DVSA MOT bulk data, 2019–2024.

Check a 2018 Toyota Yaris by registration · All Toyota Yaris 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 Toyota Yaris 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.

Toyota Yaris 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	28,677	10.9	10.6–11.3	9.8	111.9
4	28,152	12.6	12.3–13	12.5	101.5
5	28,094	13.2	12.8–13.6	14.1	93.2
6	28,095	14.9	14.5–15.3	15.7	94.9

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 113,018 (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 Toyota Yaris?

The most common failure group on cars built in 2018 is visibility: 4.4 items per 100 first tests, against 8.8 across all build years of the Toyota Yaris. These counts are not age-adjusted: cars built in 2018 were tested at ages 3 to 6.

Failure items per 100 first tests, Toyota Yaris built 2018 against the Toyota Yaris in all build years (2019–2024, not age-adjusted)
Failure group	Built 2018, per 100	All build years, per 100	Items
Visibility	4.4	8.8	4,985
Tyres	3.5	6.3	3,954
Lamps, reflectors and electrical equipment	3.4	21.9	3,882
Suspension	2	13.6	2,326
Brakes	1.6	10	1,821

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 114,265 (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 22 published build years of the Toyota Yaris, 2018 ranks 10 (1 = fails least for its age). 2017: index 96.3. 2019: index 94.7.

Toyota Yaris build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
1999	104.5	101.5–107.5	worse	9,529
2000	100.8	99.2–102.5	no different	30,502
2001	96.4	95.3–97.6	better	61,021
2002	96.5	95.5–97.5	better	84,794
2003	101.2	100.3–102.1	worse	102,702
2004	102.7	101.8–103.6	worse	113,570
2005	101.1	100.3–102.0	worse	129,060
2006	103.5	102.6–104.3	worse	123,325
2007	104.2	103.4–105.1	worse	141,938
2008	105.8	104.9–106.6	worse	146,930
2009	92.9	92.1–93.7	better	154,582
2010	99.4	98.4–100.4	no different	115,747
2011	93.8	92.6–94.9	better	98,317
2012	104.2	103.2–105.1	worse	165,119
2013	106.8	105.8–107.8	worse	173,275
2014	105.2	104.2–106.3	worse	173,965
2015	91.3	90.3–92.3	better	185,344
2016	91.7	90.5–92.8	better	172,193
2017	96.3	95.0–97.7	better	140,032
2018	99.3	97.6–100.9	no different	113,018
2019	94.7	92.8–96.6	better	85,231
2020	95.1	92.2–97.9	better	41,596

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,561,790 (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). Toyota Yaris 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/toyota-yaris/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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