Toyota Yaris 1999: MOT failure rate for its age

49.4% of 9,529 MOT tests of the Toyota Yaris first registered in 1999 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 104.5 (95% CI 101.5–107.5; 100 = normal for this model at that age): close to other build years of the same model at the same age (within 5 points of normal).

Toyota Yaris built in 1999 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	49.4	%	all ages tested	2019–2024	9529
Index against this model at the same age (95% CI 101.5–107.5)	104.5	index	100 = normal for this model at that age	2019–2024	9529
Rank among this model's 22 build years	19	of 22	1 = fails least for its age	2019–2024	9529
Tested in 2024	311	tests	median 93,376 miles	2024	311

Built 1999 against Toyota Yaris normal for the age: first-time MOT failure share at each age, age 20: 50.8% vs 49.8%; age 21: 48.2% vs 45.5%; age 22: 48.2% vs 44.7%. Axis from 0% to 60%. DVSA MOT bulk data, 2019–2024.

Check a 1999 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 1999 Toyota Yaris fail at each age?

Cars built in 1999 were tested at ages 20 to 22 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 1999: 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)
20	4,283	50.8	49.3–52.3	49.8	102
21	3,024	48.2	46.4–50	45.5	106
22	2,222	48.2	46.1–50.3	44.7	107.8

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 9,529 (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 1999 Toyota Yaris?

The most common failure group on cars built in 1999 is lamps, reflectors and electrical equipment: 47.5 items per 100 first tests, against 21.9 across all build years of the Toyota Yaris. These counts are not age-adjusted: cars built in 1999 were tested at ages 20 to 22.

Failure items per 100 first tests, Toyota Yaris built 1999 against the Toyota Yaris in all build years (2019–2024, not age-adjusted)
Failure group	Built 1999, per 100	All build years, per 100	Items
Lamps, reflectors and electrical equipment	47.5	21.9	6,125
Suspension	44	13.6	5,669
Body, chassis, structure	17.8	5.1	2,301
Noise, emissions and leaks	17.2	3.4	2,216
Visibility	15.6	8.8	2,017

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 12,898 (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 1999 compare with the years around it?

Among the 22 published build years of the Toyota Yaris, 1999 ranks 19 (1 = fails least for its age). 2000: index 100.8.

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 1999 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/1999/

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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