Does the Aston Martin DB9 fail the MOT on noise, emissions and leaks more than it should?
The Aston Martin DB9 records 1.54 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 6.58 expected for a car of the same age mix: less than expected for its class and age (−5.04, 95% interval −5.35 to −4.73). It ranks 662 of 678 models on noise, emissions and leaks (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on noise, emissions and leaks · check a Aston Martin DB9 by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Aston Martin DB9 is “Engine MIL illuminated indicating a malfunction”, recorded 304 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Engine MIL illuminated indicating a malfunction | 304 | 1.16 |
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 43 | 0.16 |
| Emissions test unable to be completed | 30 | 0.11 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 26,265 (initial tests) · Method: failure items (major and minor) grouped by DVSA's defect tree; wordings with 30+ items · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
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 2011 · 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 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