Does the Dacia Logan fail the MOT on noise, emissions and leaks more than it should?
The Dacia Logan records 1.48 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 1.24 expected for a car of the same age mix: about as expected for its class and age (the difference is within its interval or under 0.5 items per 100 tests) (+0.24, 95% interval +0.15 to +0.32). It ranks 219 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 Dacia Logan by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Dacia Logan is “Engine MIL illuminated indicating a malfunction”, recorded 643 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Engine MIL illuminated indicating a malfunction | 643 | 0.79 |
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 140 | 0.17 |
| Emissions test unable to be completed | 83 | 0.10 |
| Emissions levels exceed default limits | 80 | 0.10 |
| Emissions levels exceed the manufacturer's specified limits | 72 | 0.09 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 81,342 (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 Dacia Logan gets a noise, emissions and leaks advisory, how often does it fail next time?
5.4% of Dacia Logan MOTs with a noise, emissions and leaks advisory were followed by a fail in the same group at the next MOT, typically 11.8 months and 11,788 miles later (613 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 613 (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
Dacia Logan 2013 · Dacia Logan 2014 · Dacia Logan 2015 · Dacia Logan 2016 · Dacia Logan 2017 · Dacia Logan 2018 · Dacia Logan 2019 · Dacia Logan 2020 · Dacia Logan in Finland · Dacia Logan in the Netherlands · Dacia Logan by postcode area · Dacia Logan body, chassis and structure failures · Dacia Logan brakes failures · Dacia Logan vehicle identification failures · Dacia Logan lamps, reflectors and electrics failures · Dacia Logan road wheels failures · Dacia Logan seat belts and airbags failures · Dacia Logan steering failures · Dacia Logan suspension failures · Dacia Logan tyres failures · Dacia Logan visibility failures