Vauxhall Combo 2015: MOT failure rate for its age

37.0% of 34,848 MOT tests of the Vauxhall Combo first registered in 2015 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 101.7 (95% CI 100.0–103.5; 100 = normal for this model at that age): the 2015 build year is no different from other years of the same model at the same age.

Vauxhall Combo built in 2015 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	37.0	%	all ages tested	2019–2024	34848
Index against this model at the same age (95% CI 100.0–103.5)	101.7	index	100 = normal for this model at that age	2019–2024	34848
Rank among this model's 23 build years	14	of 23	1 = fails least for its age	2019–2024	34848
Tested in 2024	5247	tests	median 100,074 miles	2024	5247

Built 2015 against Vauxhall Combo normal for the age: first-time MOT failure share at each age, age 4: 31% vs 33.7%; age 5: 33% vs 31.9%; age 6: 37.6% vs 37.2%; age 7: 38.8% vs 38.5%; age 8: 41.2% vs 39.2%; age 9: 41.6% vs 38.3%. Axis from 0% to 50%. DVSA MOT bulk data, 2019–2024.

Check a 2015 Vauxhall Combo by registration · All Vauxhall Combo 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 2015 Vauxhall Combo fail at each age?

Cars built in 2015 were tested at ages 4 to 9 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.

Vauxhall Combo built 2015: 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)
4	6,323	31	29.9–32.2	33.7	91.9
5	5,850	33	31.8–34.2	31.9	103.5
6	6,004	37.6	36.4–38.9	37.2	101
7	5,780	38.8	37.6–40.1	38.5	100.9
8	5,644	41.2	39.9–42.5	39.2	105.1
9	5,247	41.6	40.3–42.9	38.3	108.5

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 34,848 (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 2015 Vauxhall Combo?

The most common failure group on cars built in 2015 is lamps, reflectors and electrical equipment: 21 items per 100 first tests, against 33.4 across all build years of the Vauxhall Combo. These counts are not age-adjusted: cars built in 2015 were tested at ages 4 to 9.

Failure items per 100 first tests, Vauxhall Combo built 2015 against the Vauxhall Combo in all build years (2019–2024, not age-adjusted)
Failure group	Built 2015, per 100	All build years, per 100	Items
Lamps, reflectors and electrical equipment	21	33.4	7,333
Suspension	20.2	32.2	7,046
Visibility	12.9	19.4	4,487
Tyres	12.4	14.1	4,327
Brakes	9.2	22	3,193

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 34,848 (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 2015 compare with the years around it?

Among the 23 published build years of the Vauxhall Combo, 2015 ranks 14 (1 = fails least for its age). 2014: index 103.2. 2016: index 102.2.

Vauxhall Combo build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
1998	83.4	68.0–98.7	better (rough estimate)	241
1999	77.8	66.8–88.8	better (rough estimate)	449
2000	92.5	81.5–103.4	no different (rough estimate)	538
2001	92.6	84.9–100.3	no different (rough estimate)	1,086
2002	100.4	97.3–103.5	no different	7,420
2003	101.1	99.2–103.0	no different	19,618
2004	102.6	100.9–104.3	worse	24,540
2005	99.9	98.3–101.5	no different	27,636
2006	102.7	101.3–104.2	worse	35,753
2007	103.6	102.3–105.0	worse	41,738
2008	102.1	100.8–103.4	worse	47,474
2009	100.8	99.2–102.4	no different	31,944
2010	87.4	86.2–88.6	better	49,269
2011	88.6	87.4–89.9	better	52,455
2012	113.3	111.1–115.5	worse	21,334
2013	105.9	103.8–107.9	worse	23,155
2014	103.2	101.4–105.0	worse	33,299
2015	101.7	100.0–103.5	no different	34,848
2016	102.2	100.4–104.1	worse	33,027
2017	99.8	97.4–102.2	no different	20,467
2018	98.6	95.5–101.7	no different	12,261
2019	95.4	93.8–97.0	better	47,762
2020	110.6	108.2–113.1	worse	24,229

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 590,543 (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). Vauxhall Combo 2015 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/vauxhall-combo/2015/

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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