Alfa Romeo 147 2005: MOT failure rate for its age

48.1% of 2,443 MOT tests of the Alfa Romeo 147 first registered in 2005 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 96.1 (95% CI 90.6–101.6; 100 = normal for this model at that age): the 2005 build year is no different from other years of the same model at the same age. This is a rough estimate from a smaller sample.

Alfa Romeo 147 built in 2005 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	48.1	%	all ages tested	2019–2024	2443
Index against this model at the same age (95% CI 90.6–101.6)	96.1	index	100 = normal for this model at that age	2019–2024	2443
Rank among this model's 8 build years	5	of 8	1 = fails least for its age	2019–2024	2443
Tested in 2024	182	tests	median 90,552 miles	2024	182

Built 2005 against Alfa Romeo 147 normal for the age: first-time MOT failure share at each age, age 14: 49.7% vs 51.8%; age 15: 49% vs 48.9%; age 16: 49.8% vs 50.3%; age 17: 42.2% vs 50.1%; age 18: 44.3% vs 45.3%; age 19: 45.1% vs n/a%. Axis from 0% to 60%. DVSA MOT bulk data, 2019–2024.

Check a 2005 Alfa Romeo 147 by registration · All Alfa Romeo 147 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 2005 Alfa Romeo 147 fail at each age?

Cars built in 2005 were tested at ages 14 to 19 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.

Alfa Romeo 147 built 2005: 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)
14	886	49.7	46.4–52.9	51.8	95.8
15	577	49	45–53.1	48.9	100.2
16	424 (rough estimate)	49.8	45–54.5	50.3	98.9
17	303 (rough estimate)	42.2	36.8–47.9	50.1	84.3
18	253 (rough estimate)	44.3	38.3–50.4	45.3	97.8
19	182 (rough estimate)	45.1	38–52.3	not available	not available

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,625 (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 2005 Alfa Romeo 147?

The most common failure group on cars built in 2005 is suspension: 37.8 items per 100 first tests, against 37.2 across all build years of the Alfa Romeo 147. These counts are not age-adjusted: cars built in 2005 were tested at ages 14 to 19.

Failure items per 100 first tests, Alfa Romeo 147 built 2005 against the Alfa Romeo 147 in all build years (2019–2024, not age-adjusted)
Failure group	Built 2005, per 100	All build years, per 100	Items
Suspension	37.8	37.2	992
Lamps, reflectors and electrical equipment	32.3	31.4	849
Brakes	29.1	26.3	764
Visibility	18.8	15.8	494
Body, chassis, structure	16.4	16.7	430

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,625 (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 2005 compare with the years around it?

Among the 8 published build years of the Alfa Romeo 147, 2005 ranks 5 (1 = fails least for its age). 2004: index 95.6. 2006: index 100.4.

Alfa Romeo 147 build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
2002	99.8	91.5–108.0	no different (rough estimate)	1,070
2003	92.3	86.3–98.2	better (rough estimate)	1,917
2004	95.6	89.5–101.7	no different (rough estimate)	1,931
2005	96.1	90.6–101.6	no different (rough estimate)	2,443
2006	100.4	95.0–105.7	no different (rough estimate)	2,729
2007	98.5	93.8–103.2	no different (rough estimate)	3,488
2008	94.1	89.8–98.5	better (rough estimate)	3,924
2009	89.9	82.2–97.6	better (rough estimate)	1,234

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 18,736 (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). Alfa Romeo 147 2005 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/alfa-romeo-147/2005/

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.

Alfa Romeo 147 2005: MOT failure rate for its age

How does the 2005 Alfa Romeo 147 fail at each age?

What fails most on the 2005 Alfa Romeo 147?

How does 2005 compare with the years around it?

How to cite this page

Related pages

Other pages for this model