Does the Fiat Seicento fail the MOT on noise, emissions and leaks more than it should?
The Fiat Seicento records 10.76 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 10.04 expected for a car of the same age mix: more than expected for its class and age (+0.72, 95% interval +0.21 to +1.24). It ranks 163 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 Fiat Seicento by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Fiat Seicento is “Lambda coefficient outside the default limits or the range specified by the manufacturer”, recorded 383 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 383 | 2.44 |
| Emissions test unable to be completed | 373 | 2.37 |
| Emissions levels exceed default limits | 368 | 2.34 |
| An induction or exhaust leak that could affect emissions levels | 151 | 0.96 |
| Emissions levels exceed the manufacturer's specified limits | 145 | 0.92 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 15,718 (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 Fiat Seicento gets a noise, emissions and leaks advisory, how often does it fail next time?
9.6% of Fiat Seicento 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 2,122 miles later (1,695 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 1,695 (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
Fiat Seicento 1999 · Fiat Seicento 2000 · Fiat Seicento 2001 · Fiat Seicento 2002 · Fiat Seicento 2003 · Fiat Seicento in the Netherlands · Fiat Seicento by postcode area · Fiat Seicento body, chassis and structure failures · Fiat Seicento brakes failures · Fiat Seicento vehicle identification failures · Fiat Seicento lamps, reflectors and electrics failures · Fiat Seicento road wheels failures · Fiat Seicento seat belts and airbags failures · Fiat Seicento steering failures · Fiat Seicento suspension failures · Fiat Seicento tyres failures · Fiat Seicento visibility failures