Does the Porsche 928 fail the MOT on visibility more than it should?
The Porsche 928 records 8.64 visibility failure items per 100 initial MOT tests (2019–2024), against 10.63 expected for a car of the same age mix: less than expected for its class and age (−1.99, 95% interval −2.89 to −1.09). It ranks 529 of 746 models on visibility (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on visibility · check a Porsche 928 by registration
What exactly fails on visibility?
The most frequent DVSA defect wording in this group on the Porsche 928 is “Windscreen washers not working or not providing sufficient fluid to clear the windscreen”, recorded 210 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Windscreen washers not working or not providing sufficient fluid to clear the windscreen | 210 | 4.20 |
| Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view | 86 | 1.72 |
| Wiper blade missing or obviously not clearing the windscreen | 68 | 1.36 |
| Wiper not operating or missing | 31 | 0.62 |
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 body, chassis and structure failures · 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