Fiat Seicento 2003: MOT failure rate for its age

49.6% of 4,620 MOT tests of the Fiat Seicento first registered in 2003 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 99.0 (95% CI 94.9–103.0; 100 = normal for this model at that age): the 2003 build year is no different from other years of the same model at the same age.

Fiat Seicento built in 2003 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	49.6	%	all ages tested	2019–2024	4620
Index against this model at the same age (95% CI 94.9–103.0)	99.0	index	100 = normal for this model at that age	2019–2024	4620
Rank among this model's 5 build years	4	of 5	1 = fails least for its age	2019–2024	4620
Tested in 2024	418	tests	median 54,790 miles	2024	418

Built 2003 against Fiat Seicento normal for the age: first-time MOT failure share at each age, age 16: 51.6% vs 56.1%; age 17: 50.6% vs 49.7%; age 18: 51.5% vs 50.2%; age 19: 45.4% vs 46.5%; age 20: 46.7% vs 45.4%; age 21: 47.6% vs 43.8%. Axis from 0% to 60%. DVSA MOT bulk data, 2019–2024.

Check a 2003 Fiat Seicento by registration · All Fiat Seicento 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 2003 Fiat Seicento fail at each age?

Cars built in 2003 were tested at ages 16 to 21 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.

Fiat Seicento built 2003: 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)
16	1,292	51.6	48.9–54.3	56.1	92
17	952	50.6	47.5–53.8	49.7	101.9
18	807	51.5	48.1–55	50.2	102.6
19	639	45.4	41.6–49.3	46.5	97.6
20	512	46.7	42.4–51	45.4	102.7
21	418 (rough estimate)	47.6	42.9–52.4	43.8	108.7

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 4,620 (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 2003 Fiat Seicento?

The most common failure group on cars built in 2003 is brakes: 57.8 items per 100 first tests, against 53.3 across all build years of the Fiat Seicento. These counts are not age-adjusted: cars built in 2003 were tested at ages 16 to 21.

Failure items per 100 first tests, Fiat Seicento built 2003 against the Fiat Seicento in all build years (2019–2024, not age-adjusted)
Failure group	Built 2003, per 100	All build years, per 100	Items
Brakes	57.8	53.3	2,671
Lamps, reflectors and electrical equipment	36.5	39.8	1,687
Suspension	24.9	23.7	1,149
Body, chassis, structure	23.8	22.2	1,099
Visibility	15.3	15.3	709

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 4,620 (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 2003 compare with the years around it?

Among the 5 published build years of the Fiat Seicento, 2003 ranks 4 (1 = fails least for its age). 2002: index 97.1.

Fiat Seicento build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
1999	99.4	88.2–110.6	no different (rough estimate)	625
2000	97.7	90.2–105.1	no different (rough estimate)	1,377
2001	97.0	91.7–102.2	no different (rough estimate)	2,756
2002	97.1	92.6–101.6	no different (rough estimate)	3,702
2003	99.0	94.9–103.0	no different	4,620

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 13,080 (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). Fiat Seicento 2003 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/fiat-seicento/2003/

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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