Aston Martin DB9 2011: MOT failure rate for its age

11.0% of 254 MOT tests of the Aston Martin DB9 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 96.8 (95% CI 60.9–132.6; 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. This is a rough estimate from a smaller sample.

Aston Martin DB9 built in 2011 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	11.0	%	all ages tested	2019–2024	254
Index against this model at the same age (95% CI 60.9–132.6)	96.8	index	100 = normal for this model at that age	2019–2024	254
Rank among this model's 8 build years	4	of 8	1 = fails least for its age	2019–2024	254
Tested in 2024	86	tests	median 32,743 miles	2024	86

Built 2011 against Aston Martin DB9 normal for the age: first-time MOT failure share at each age, age 8: 10.6% vs n/a%; age 9: 16.5% vs n/a%; age 10: 7.5% vs n/a%; age 11: 9.8% vs 11.9%; age 12: 11.6% vs 11.2%; age 13: 11.6% vs 11%. Axis from 0% to 20%. DVSA MOT bulk data, 2019–2024.

Check a 2011 Aston Martin DB9 by registration · All Aston Martin DB9 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 Aston Martin DB9 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.

Aston Martin DB9 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	85 (rough estimate)	10.6	5.7–18.9	not available	not available
9	79 (rough estimate)	16.5	9.9–26.1	not available	not available
10	93 (rough estimate)	7.5	3.7–14.7	not available	not available
11	82 (rough estimate)	9.8	5–18.1	11.9	81.9
12	86 (rough estimate)	11.6	6.4–20.1	11.2	103.5
13	86 (rough estimate)	11.6	6.4–20.1	11	105.3

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 511 (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 Aston Martin DB9?

The most common failure group on cars built in 2011 is lamps, reflectors and electrical equipment: 7.4 items per 100 first tests, against 6.8 across all build years of the Aston Martin DB9. These counts are not age-adjusted: cars built in 2011 were tested at ages 8 to 13.

Failure items per 100 first tests, Aston Martin DB9 built 2011 against the Aston Martin DB9 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	7.4	6.8	38

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 511 (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 8 published build years of the Aston Martin DB9, 2011 ranks 4 (1 = fails least for its age). 2010: index 94.2.

Aston Martin DB9 build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
2004	127.8	110.2–145.5	worse (rough estimate)	1,361
2005	103.9	96.5–111.3	no different	6,327
2006	105.5	95.7–115.3	no different (rough estimate)	3,630
2007	99.1	90.1–108.1	no different	4,018
2008	84.5	74.6–94.4	better (rough estimate)	2,778
2009	73.6	59.1–88.1	better (rough estimate)	1,146
2010	94.2	74.2–114.2	no different (rough estimate)	780
2011	96.8	60.9–132.6	no different (rough estimate)	254

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 20,294 (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). Aston Martin DB9 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/aston-martin-db9/2011/

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.

Other pages for this model

Aston Martin DB9 2004 · Aston Martin DB9 2005 · Aston Martin DB9 2006 · Aston Martin DB9 2007 · Aston Martin DB9 2008 · Aston Martin DB9 2009 · Aston Martin DB9 2010 · Aston Martin DB9 by postcode area · Aston Martin DB9 body, chassis and structure failures · Aston Martin DB9 brakes failures · Aston Martin DB9 vehicle identification failures · Aston Martin DB9 lamps, reflectors and electrics failures · Aston Martin DB9 noise, emissions and leaks failures · Aston Martin DB9 road wheels failures · Aston Martin DB9 seat belts and airbags failures · Aston Martin DB9 steering failures · Aston Martin DB9 suspension failures · Aston Martin DB9 tyres failures · Aston Martin DB9 visibility failures