Fiat Fullback 2018: MOT failure rate for its age

16.5% of 3,991 MOT tests of the Fiat Fullback 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 109.3 (95% CI 101.0–117.7; 100 = normal for this model at that age): the 2018 Fiat Fullback fails more often than other build years of the same model at the same age. This is a rough estimate from a smaller sample.

Fiat Fullback built in 2018 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	16.5	%	all ages tested	2019–2024	3991
Index against this model at the same age (95% CI 101.0–117.7)	109.3	index	100 = normal for this model at that age	2019–2024	3991
Rank among this model's 4 build years	2	of 4	1 = fails least for its age	2019–2024	3991
Tested in 2024	989	tests	median 65,347 miles	2024	989

Built 2018 against Fiat Fullback normal for the age: first-time MOT failure share at each age, age 3: 13% vs 11.5%; age 4: 16.7% vs 15.6%; age 5: 16% vs 14.9%; age 6: 20.3% vs 18.3%. Axis from 0% to 30%. DVSA MOT bulk data, 2019–2024.

Check a 2018 Fiat Fullback by registration · All Fiat Fullback 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 Fiat Fullback 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.

Fiat Fullback 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	983	13	11.1–15.3	11.5	112.9
4	1,010	16.7	14.6–19.2	15.6	107.1
5	1,009	16	13.8–18.3	14.9	107
6	989	20.3	17.9–22.9	18.3	111

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 3,991 (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 Fiat Fullback?

The most common failure group on cars built in 2018 is lamps, reflectors and electrical equipment: 8.6 items per 100 first tests, against 7.8 across all build years of the Fiat Fullback. These counts are not age-adjusted: cars built in 2018 were tested at ages 3 to 6.

Failure items per 100 first tests, Fiat Fullback built 2018 against the Fiat Fullback in all build years (2019–2024, not age-adjusted)
Failure group	Built 2018, per 100	All build years, per 100	Items
Lamps, reflectors and electrical equipment	8.6	7.8	344
Brakes	7.9	8.2	318
Visibility	7.4	7.5	298
Tyres	3.6	3.2	144
Suspension	1.5	1.6	59

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 4,012 (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 4 published build years of the Fiat Fullback, 2018 ranks 2 (1 = fails least for its age). 2017: index 98.1. 2019: index 129.9.

Fiat Fullback build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
2016	111.7	98.6–124.7	no different (rough estimate)	1,563
2017	98.1	92.1–104.1	no different	6,822
2018	109.3	101.0–117.7	worse (rough estimate)	3,991
2019	129.9	109.1–150.7	worse (rough estimate)	831

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 13,207 (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 Fullback 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/fiat-fullback/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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