Does the Vauxhall Signum fail the MOT on visibility more than it should?

The Vauxhall Signum records 13.70 visibility failure items per 100 initial MOT tests (2019–2024), against 11.70 expected for a car of the same age mix: more than expected for its class and age (+2.00, 95% interval +1.44 to +2.56). It ranks 137 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 Vauxhall Signum by registration

What exactly fails on visibility?

The most frequent DVSA defect wording in this group on the Vauxhall Signum is “Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view”, recorded 642 times in 2019–2024.

Vauxhall Signum: most frequent visibility defect wordings, 2019–2024 (30+ items each)
DVSA defect wording	Items	Per 100 tests
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view	642	3.77
Wiper blade missing or obviously not clearing the windscreen	581	3.41
Windscreen washers not working or not providing sufficient fluid to clear the windscreen	495	2.91
Wiper blade defective	240	1.41
Obligatory mirror or device slightly damaged or loose	137	0.80

Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 17,028 (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

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Does the Vauxhall Signum fail the MOT on visibility more than it should?

What exactly fails on visibility?

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