Does the Porsche 924 fail the MOT on noise, emissions and leaks more than it should?
The Porsche 924 records 6.81 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 7.31 expected for a car of the same age mix: about as expected for its class and age (the difference is within its interval or under 0.5 items per 100 tests) (−0.50, 95% interval −1.29 to +0.29). It ranks 374 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 924 by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Porsche 924 is “Emissions levels exceed default limits”, recorded 219 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Emissions levels exceed default limits | 219 | 4.87 |
| Emissions test unable to be completed | 40 | 0.89 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 4,495 (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
Other pages for this model
Porsche 924 by postcode area · Porsche 924 body, chassis and structure failures · Porsche 924 brakes failures · Porsche 924 lamps, reflectors and electrics failures · Porsche 924 seat belts and airbags failures · Porsche 924 steering failures · Porsche 924 suspension failures · Porsche 924 tyres failures · Porsche 924 visibility failures