Does the Alfa Romeo MiTo fail the MOT on noise, emissions and leaks more than it should?
The Alfa Romeo MiTo records 4.93 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 3.41 expected for a car of the same age mix: more than expected for its class and age (+1.52, 95% interval +1.40 to +1.64). It ranks 110 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 MiTo by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Alfa Romeo MiTo is “Lambda coefficient outside the default limits or the range specified by the manufacturer”, recorded 2,131 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 2,131 | 1.65 |
| Engine MIL illuminated indicating a malfunction | 1,220 | 0.95 |
| Emissions test unable to be completed | 1,136 | 0.88 |
| An induction or exhaust leak that could affect emissions levels | 763 | 0.59 |
| Emissions levels exceed default limits | 275 | 0.21 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 128,914 (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 MiTo gets a noise, emissions and leaks advisory, how often does it fail next time?
7.0% of Alfa Romeo MiTo 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 5,593 miles later (6,827 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 6,827 (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 MiTo 2009 · Alfa Romeo MiTo 2010 · Alfa Romeo MiTo 2011 · Alfa Romeo MiTo 2012 · Alfa Romeo MiTo 2013 · Alfa Romeo MiTo 2014 · Alfa Romeo MiTo 2015 · Alfa Romeo MiTo 2016 · Alfa Romeo MiTo 2017 · Alfa Romeo MiTo 2018 · Alfa Romeo MiTo by postcode area · Alfa Romeo MiTo body, chassis and structure failures · Alfa Romeo MiTo brakes failures · Alfa Romeo MiTo vehicle identification failures · Alfa Romeo MiTo lamps, reflectors and electrics failures · Alfa Romeo MiTo road wheels failures · Alfa Romeo MiTo seat belts and airbags failures · Alfa Romeo MiTo steering failures · Alfa Romeo MiTo suspension failures · Alfa Romeo MiTo tyres failures · Alfa Romeo MiTo visibility failures