Does the Porsche 944 fail the MOT on noise, emissions and leaks more than it should?
The Porsche 944 records 4.90 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 7.33 expected for a car of the same age mix: less than expected for its class and age (−2.43, 95% interval −2.86 to −2.00). It ranks 572 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 Porsche 944 by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Porsche 944 is “Emissions levels exceed default limits”, recorded 476 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Emissions levels exceed default limits | 476 | 3.11 |
| Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users | 75 | 0.49 |
| Emissions test unable to be completed | 73 | 0.48 |
| Emissions levels exceed the manufacturer's specified limits | 30 | 0.20 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 15,287 (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 Porsche 944 gets a noise, emissions and leaks advisory, how often does it fail next time?
6.9% of Porsche 944 MOTs with a noise, emissions and leaks advisory were followed by a fail in the same group at the next MOT, typically 12.5 months and 252 miles later (1,413 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 1,413 (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
Porsche 944 by postcode area · Porsche 944 body, chassis and structure failures · Porsche 944 brakes failures · Porsche 944 vehicle identification failures · Porsche 944 lamps, reflectors and electrics failures · Porsche 944 road wheels failures · Porsche 944 seat belts and airbags failures · Porsche 944 steering failures · Porsche 944 suspension failures · Porsche 944 tyres failures · Porsche 944 visibility failures