Does the Porsche 928 fail the MOT on body, chassis and structure more than it should?
The Porsche 928 records 8.12 body, chassis and structure failure items per 100 initial MOT tests (2019–2024), against 15.02 expected for a car of the same age mix: less than expected for its class and age (−6.90, 95% interval −7.97 to −5.83). It ranks 580 of 663 models on body, chassis and structure (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on body, chassis and structure · check a Porsche 928 by registration
What exactly fails on body, chassis and structure?
The most frequent DVSA defect wording in this group on the Porsche 928 is “A transmission shaft constant velocity joint boot severely deteriorated”, recorded 143 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| A transmission shaft constant velocity joint boot severely deteriorated | 143 | 2.86 |
| A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc | 122 | 2.44 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 5,000 (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 928 by postcode area · Porsche 928 brakes failures · Porsche 928 vehicle identification failures · Porsche 928 lamps, reflectors and electrics failures · Porsche 928 noise, emissions and leaks failures · Porsche 928 seat belts and airbags failures · Porsche 928 steering failures · Porsche 928 suspension failures · Porsche 928 tyres failures · Porsche 928 visibility failures