Does the Alfa Romeo 159 fail the MOT on noise, emissions and leaks more than it should?
The Alfa Romeo 159 records 9.20 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 5.77 expected for a car of the same age mix: more than expected for its class and age (+3.43, 95% interval +3.09 to +3.76). It ranks 60 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 Alfa Romeo 159 by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Alfa Romeo 159 is “Smoke opacity levels exceed the manufacturer's specified limit”, recorded 900 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Smoke opacity levels exceed the manufacturer's specified limit | 900 | 2.87 |
| Engine MIL illuminated indicating a malfunction | 890 | 2.83 |
| Emissions test unable to be completed | 203 | 0.65 |
| Smoke opacity levels exceed default limit | 168 | 0.53 |
| Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users | 120 | 0.38 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 31,408 (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 Alfa Romeo 159 gets a noise, emissions and leaks advisory, how often does it fail next time?
10.7% of Alfa Romeo 159 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 5,812 miles later (2,644 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 2,644 (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
Alfa Romeo 159 2006 · Alfa Romeo 159 2007 · Alfa Romeo 159 2008 · Alfa Romeo 159 2009 · Alfa Romeo 159 2010 · Alfa Romeo 159 2011 · Alfa Romeo 159 2012 · Alfa Romeo 159 in Norway · Alfa Romeo 159 in Finland · Alfa Romeo 159 in the Netherlands · Alfa Romeo 159 by postcode area · Alfa Romeo 159 body, chassis and structure failures · Alfa Romeo 159 brakes failures · Alfa Romeo 159 vehicle identification failures · Alfa Romeo 159 lamps, reflectors and electrics failures · Alfa Romeo 159 road wheels failures · Alfa Romeo 159 seat belts and airbags failures · Alfa Romeo 159 steering failures · Alfa Romeo 159 suspension failures · Alfa Romeo 159 tyres failures · Alfa Romeo 159 visibility failures