Does the Audi A5 fail the MOT on noise, emissions and leaks more than it should?
The Audi A5 records 1.56 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 2.58 expected for a car of the same age mix: less than expected for its class and age (−1.02, 95% interval −1.06 to −0.99). It ranks 440 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 Audi A5 by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Audi A5 is “Engine MIL illuminated indicating a malfunction”, recorded 7,171 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Engine MIL illuminated indicating a malfunction | 7,171 | 1.05 |
| Emissions levels exceed default limits | 668 | 0.10 |
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 643 | 0.09 |
| Emissions test unable to be completed | 630 | 0.09 |
| Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users | 292 | 0.04 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 685,960 (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
If a Audi A5 gets a noise, emissions and leaks advisory, how often does it fail next time?
5.0% of Audi A5 MOTs with a noise, emissions and leaks advisory were followed by a fail in the same group at the next MOT, typically 12.1 months and 6,482 miles later (6,638 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 6,638 (advisories followed) · Method: the same vehicles followed to their next ordinary MOT · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
Other pages for this model
Audi A5 2007 · Audi A5 2008 · Audi A5 2009 · Audi A5 2010 · Audi A5 2011 · Audi A5 2012 · Audi A5 2013 · Audi A5 2014 · Audi A5 2015 · Audi A5 2016 · Audi A5 2017 · Audi A5 2018 · Audi A5 2019 · Audi A5 2020 · Audi A5 in Norway · Audi A5 in Finland · Audi A5 in the Netherlands · Audi A5 by postcode area · Audi A5 body, chassis and structure failures · Audi A5 brakes failures · Audi A5 vehicle identification failures · Audi A5 lamps, reflectors and electrics failures · Audi A5 road wheels failures · Audi A5 seat belts and airbags failures · Audi A5 steering failures · Audi A5 suspension failures · Audi A5 tyres failures · Audi A5 visibility failures