Does the Suzuki Celerio fail the MOT on noise, emissions and leaks more than it should?

The Suzuki Celerio records 0.19 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 1.11 expected for a car of the same age mix: less than expected for its class and age (−0.92, 95% interval −0.97 to −0.86). It ranks 430 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 Suzuki Celerio by registration

What exactly fails on noise, emissions and leaks?

The most frequent DVSA defect wording in this group on the Suzuki Celerio is “Lambda coefficient outside the default limits or the range specified by the manufacturer”, recorded 106 times in 2019–2024.

Suzuki Celerio: most frequent noise, emissions and leaks defect wordings, 2019–2024 (30+ items each)
DVSA defect wording	Items	Per 100 tests
Lambda coefficient outside the default limits or the range specified by the manufacturer	106	0.07
Emissions test unable to be completed	44	0.03
Engine MIL illuminated indicating a malfunction	41	0.03
Emissions levels exceed default limits	39	0.03

Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 147,331 (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

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Does the Suzuki Celerio fail the MOT on noise, emissions and leaks more than it should?

What exactly fails on noise, emissions and leaks?

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