BMW 1 Series 2011: MOT failure rate for its age

28.1% of 146,564 MOT tests of the BMW 1 Series first registered in 2011 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 100.1 (95% CI 99.2–101.1; 100 = normal for this model at that age): the 2011 build year is no different from other years of the same model at the same age.

BMW 1 Series built in 2011 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	28.1	%	all ages tested	2019–2024	146564
Index against this model at the same age (95% CI 99.2–101.1)	100.1	index	100 = normal for this model at that age	2019–2024	146564
Rank among this model's 17 build years	10	of 17	1 = fails least for its age	2019–2024	146564
Tested in 2024	22081	tests	median 101,256 miles	2024	22081

Built 2011 against BMW 1 Series normal for the age: first-time MOT failure share at each age, age 8: 24.4% vs 24.5%; age 9: 25.6% vs 25.4%; age 10: 27.3% vs 27.6%; age 11: 29.1% vs 28.9%; age 12: 30.7% vs 31%; age 13: 32.6% vs 32.2%. Axis from 0% to 40%. DVSA MOT bulk data, 2019–2024.

Check a 2011 BMW 1 Series by registration · All BMW 1 Series 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 2011 BMW 1 Series fail at each age?

Cars built in 2011 were tested at ages 8 to 13 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.

BMW 1 Series built 2011: 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)
8	26,536	24.4	23.9–24.9	24.5	99.6
9	24,681	25.6	25.1–26.2	25.4	101.1
10	25,070	27.3	26.7–27.8	27.6	98.9
11	24,575	29.1	28.6–29.7	28.9	100.9
12	23,621	30.7	30.1–31.3	31	99.1
13	22,081	32.6	32–33.2	32.2	101.3

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 146,564 (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 2011 BMW 1 Series?

The most common failure group on cars built in 2011 is lamps, reflectors and electrical equipment: 12.5 items per 100 first tests, against 10.2 across all build years of the BMW 1 Series. These counts are not age-adjusted: cars built in 2011 were tested at ages 8 to 13.

Failure items per 100 first tests, BMW 1 Series built 2011 against the BMW 1 Series in all build years (2019–2024, not age-adjusted)
Failure group	Built 2011, per 100	All build years, per 100	Items
Lamps, reflectors and electrical equipment	12.5	10.2	18,288
Tyres	11.6	10.4	17,037
Brakes	9.2	8.8	13,464
Suspension	9.2	6.4	13,453
Visibility	8.8	7.4	12,907

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 146,564 (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 2011 compare with the years around it?

Among the 17 published build years of the BMW 1 Series, 2011 ranks 10 (1 = fails least for its age). 2010: index 101.6. 2012: index 107.6.

BMW 1 Series build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
2004	105.0	102.6–107.5	worse	18,094
2005	104.1	102.8–105.4	worse	62,234
2006	101.8	100.6–103.0	worse	76,682
2007	98.3	97.2–99.4	better	85,385
2008	98.5	97.6–99.5	better	120,367
2009	99.3	98.4–100.2	no different	138,466
2010	101.6	100.7–102.5	worse	156,219
2011	100.1	99.2–101.1	no different	146,564
2012	107.6	106.6–108.5	worse	183,349
2013	103.1	102.2–103.9	worse	228,790
2014	104.0	103.0–105.0	worse	189,877
2015	97.0	96.0–98.0	better	194,489
2016	97.5	96.4–98.6	better	196,915
2017	89.7	88.6–90.9	better	177,556
2018	98.7	97.2–100.3	no different	111,149
2019	99.2	97.4–101.1	no different	86,860
2020	90.5	88.0–92.9	better	50,212

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,223,208 (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). BMW 1 Series 2011 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/bmw-1-series/2011/

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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