Does the Alfa Romeo Giulietta fail the MOT on noise, emissions and leaks more than it should?
The Alfa Romeo Giulietta records 3.01 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 2.51 expected for a car of the same age mix: more than expected for its class and age (+0.50, 95% interval +0.42 to +0.59). It ranks 181 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 Giulietta by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Alfa Romeo Giulietta is “Engine MIL illuminated indicating a malfunction”, recorded 3,304 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Engine MIL illuminated indicating a malfunction | 3,304 | 2.11 |
| Smoke opacity levels exceed the manufacturer's specified limit | 545 | 0.35 |
| Emissions test unable to be completed | 235 | 0.15 |
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 181 | 0.12 |
| Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users | 108 | 0.07 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 156,752 (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 Giulietta gets a noise, emissions and leaks advisory, how often does it fail next time?
6.2% of Alfa Romeo Giulietta MOTs with a noise, emissions and leaks advisory were followed by a fail in the same group at the next MOT, typically 12 months and 6,999 miles later (3,555 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 3,555 (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 Giulietta 2010 · Alfa Romeo Giulietta 2011 · Alfa Romeo Giulietta 2012 · Alfa Romeo Giulietta 2013 · Alfa Romeo Giulietta 2014 · Alfa Romeo Giulietta 2015 · Alfa Romeo Giulietta 2016 · Alfa Romeo Giulietta 2017 · Alfa Romeo Giulietta 2018 · Alfa Romeo Giulietta 2019 · Alfa Romeo Giulietta 2020 · Alfa Romeo Giulietta in Finland · Alfa Romeo Giulietta by postcode area · Alfa Romeo Giulietta body, chassis and structure failures · Alfa Romeo Giulietta brakes failures · Alfa Romeo Giulietta vehicle identification failures · Alfa Romeo Giulietta lamps, reflectors and electrics failures · Alfa Romeo Giulietta road wheels failures · Alfa Romeo Giulietta seat belts and airbags failures · Alfa Romeo Giulietta steering failures · Alfa Romeo Giulietta suspension failures · Alfa Romeo Giulietta tyres failures · Alfa Romeo Giulietta visibility failures