Does the Ford Sierra fail the MOT on visibility more than it should?
The Ford Sierra records 5.23 visibility failure items per 100 initial MOT tests (2019–2024), against 10.65 expected for a car of the same age mix: less than expected for its class and age (−5.42, 95% interval −5.90 to −4.94). It ranks 701 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 Ford Sierra by registration
What exactly fails on visibility?
The most frequent DVSA defect wording in this group on the Ford Sierra is “Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view”, recorded 334 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view | 334 | 1.89 |
| Windscreen washers not working or not providing sufficient fluid to clear the windscreen | 202 | 1.14 |
| Wiper blade missing or obviously not clearing the windscreen | 150 | 0.85 |
| Wiper blade defective | 118 | 0.67 |
| Obligatory mirror or device slightly damaged or loose | 59 | 0.33 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 17,679 (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
Ford Sierra by postcode area · Ford Sierra body, chassis and structure failures · Ford Sierra brakes failures · Ford Sierra vehicle identification failures · Ford Sierra lamps, reflectors and electrics failures · Ford Sierra noise, emissions and leaks failures · Ford Sierra road wheels failures · Ford Sierra seat belts and airbags failures · Ford Sierra steering failures · Ford Sierra suspension failures · Ford Sierra tyres failures