Does the Toyota Yaris fail the MOT on noise, emissions and leaks more than it should?

The Toyota Yaris records 3.42 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 4.63 expected for a car of the same age mix: less than expected for its class and age (−1.21, 95% interval −1.23 to −1.18). It ranks 468 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 Toyota Yaris by registration

What exactly fails on noise, emissions and leaks?

The most frequent DVSA defect wording in this group on the Toyota Yaris is “Engine MIL illuminated indicating a malfunction”, recorded 28,837 times in 2019–2024.

Toyota Yaris: most frequent noise, emissions and leaks defect wordings, 2019–2024 (30+ items each)
DVSA defect wording	Items	Per 100 tests
Engine MIL illuminated indicating a malfunction	28,837	1.10
Lambda coefficient outside the default limits or the range specified by the manufacturer	19,230	0.74
Emissions test unable to be completed	12,726	0.49
Emissions levels exceed default limits	8,520	0.33
An induction or exhaust leak that could affect emissions levels	7,540	0.29

Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 2,615,955 (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 Toyota Yaris gets a noise, emissions and leaks advisory, how often does it fail next time?

8.6% of Toyota Yaris 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 4,622 miles later (37,112 advisories followed).

Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 37,112 (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

Does the Toyota Yaris fail the MOT on noise, emissions and leaks more than it should?

What exactly fails on noise, emissions and leaks?

If a Toyota Yaris gets a noise, emissions and leaks advisory, how often does it fail next time?

Related pages

Other pages for this model