Toyota Avensis 2004: MOT failure rate for its age

42.3% of 30,868 MOT tests of the Toyota Avensis first registered in 2004 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 98.4 (95% CI 96.7–100.0; 100 = normal for this model at that age): the 2004 build year is no different from other years of the same model at the same age.

Toyota Avensis built in 2004 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	42.3	%	all ages tested	2019–2024	30868
Index against this model at the same age (95% CI 96.7–100.0)	98.4	index	100 = normal for this model at that age	2019–2024	30868
Rank among this model's 21 build years	10	of 21	1 = fails least for its age	2019–2024	30868
Tested in 2024	2738	tests	median 113,773 miles	2024	2738

Built 2004 against Toyota Avensis normal for the age: first-time MOT failure share at each age, age 15: 43.7% vs 45.3%; age 16: 42.5% vs 42.5%; age 17: 42.1% vs 42.5%; age 18: 41.1% vs 41.7%; age 19: 41% vs 41.6%; age 20: 41.4% vs 42%. Axis from 0% to 50%. DVSA MOT bulk data, 2019–2024.

Check a 2004 Toyota Avensis by registration · All Toyota Avensis 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 2004 Toyota Avensis fail at each age?

Cars built in 2004 were tested at ages 15 to 20 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 Avensis built 2004: 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)
15	8,691	43.7	42.7–44.8	45.3	96.5
16	6,484	42.5	41.3–43.7	42.5	100.2
17	5,308	42.1	40.8–43.5	42.5	99.1
18	4,228	41.1	39.6–42.6	41.7	98.5
19	3,419	41	39.4–42.7	41.6	98.5
20	2,738	41.4	39.6–43.3	42	98.5

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 30,868 (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 2004 Toyota Avensis?

The most common failure group on cars built in 2004 is lamps, reflectors and electrical equipment: 38.3 items per 100 first tests, against 28.1 across all build years of the Toyota Avensis. These counts are not age-adjusted: cars built in 2004 were tested at ages 15 to 20.

Failure items per 100 first tests, Toyota Avensis built 2004 against the Toyota Avensis in all build years (2019–2024, not age-adjusted)
Failure group	Built 2004, per 100	All build years, per 100	Items
Lamps, reflectors and electrical equipment	38.3	28.1	11,809
Suspension	22.8	16.1	7,024
Brakes	20	16.7	6,161
Visibility	11.4	8.7	3,505
Noise, emissions and leaks	10.4	5.1	3,205

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 30,868 (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 2004 compare with the years around it?

Among the 21 published build years of the Toyota Avensis, 2004 ranks 10 (1 = fails least for its age). 2003: index 100.6. 2005: index 100.9.

Toyota Avensis build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
1998	94.8	88.8–100.9	no different (rough estimate)	2,193
1999	99.0	94.4–103.5	no different	4,083
2000	99.5	95.5–103.5	no different	5,418
2001	99.5	96.2–102.8	no different	7,902
2002	102.8	99.9–105.6	no different	11,089
2003	100.6	98.6–102.6	no different	22,519
2004	98.4	96.7–100.0	no different	30,868
2005	100.9	99.3–102.5	no different	37,402
2006	101.0	99.6–102.5	no different	44,720
2007	104.8	103.3–106.3	worse	46,417
2008	105.4	103.8–106.9	worse	43,138
2009	95.2	93.6–96.8	better	39,163
2010	95.3	93.7–97.0	better	40,551
2011	94.8	92.8–96.8	better	31,220
2012	94.3	92.3–96.3	better	33,306
2013	97.9	95.2–100.6	no different	21,489
2014	102.1	99.1–105.1	no different	20,391
2015	96.2	93.2–99.2	better	21,137
2016	91.7	88.7–94.7	better	23,031
2017	89.5	85.5–93.6	better	13,723
2018	109.8	102.0–117.5	worse	4,848

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 504,608 (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 Avensis 2004 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-avensis/2004/

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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