Does the Mercedes-Benz CLK fail the MOT on visibility more than it should?

The Mercedes-Benz CLK records 10.83 visibility failure items per 100 initial MOT tests (2019–2024), against 12.51 expected for a car of the same age mix: less than expected for its class and age (−1.68, 95% interval −1.85 to −1.51). It ranks 507 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 Mercedes-Benz CLK by registration

What exactly fails on visibility?

The most frequent DVSA defect wording in this group on the Mercedes-Benz CLK is “Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view”, recorded 5,393 times in 2019–2024.

Mercedes-Benz CLK: 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	5,393	3.08
Wiper blade missing or obviously not clearing the windscreen	4,083	2.33
Windscreen washers not working or not providing sufficient fluid to clear the windscreen	3,234	1.84
Obligatory mirror or device slightly damaged or loose	2,531	1.44
Wiper blade defective	2,065	1.18

Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 175,310 (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 Mercedes-Benz CLK fail the MOT on visibility more than it should?

What exactly fails on visibility?

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