Does the Vauxhall Omega fail the MOT on noise, emissions and leaks more than it should?
The Vauxhall Omega records 10.77 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 9.97 expected for a car of the same age mix: more than expected for its class and age (+0.80, 95% interval +0.23 to +1.37). It ranks 156 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 Vauxhall Omega by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Vauxhall Omega is “Engine MIL illuminated indicating a malfunction”, recorded 293 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Engine MIL illuminated indicating a malfunction | 293 | 2.28 |
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 274 | 2.13 |
| Emissions levels exceed default limits | 257 | 2.00 |
| Emissions test unable to be completed | 192 | 1.49 |
| Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users | 139 | 1.08 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 12,859 (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 Vauxhall Omega gets a noise, emissions and leaks advisory, how often does it fail next time?
9.7% of Vauxhall Omega 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 1,845 miles later (1,602 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 1,602 (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
Vauxhall Omega 2000 · Vauxhall Omega 2001 · Vauxhall Omega 2002 · Vauxhall Omega 2003 · Vauxhall Omega by postcode area · Vauxhall Omega body, chassis and structure failures · Vauxhall Omega brakes failures · Vauxhall Omega vehicle identification failures · Vauxhall Omega lamps, reflectors and electrics failures · Vauxhall Omega road wheels failures · Vauxhall Omega seat belts and airbags failures · Vauxhall Omega steering failures · Vauxhall Omega suspension failures · Vauxhall Omega tyres failures · Vauxhall Omega visibility failures