Does the Mercedes-Benz GLS fail the MOT on vehicle identification more than it should?

The Mercedes-Benz GLS records 1.12 vehicle identification failure items per 100 initial MOT tests (2019–2024), against 0.25 expected for a car of the same age mix: more than expected for its class and age (+0.87, 95% interval +0.67 to +1.07). It ranks 24 of 636 models on vehicle identification (1 = most failures above expected).

Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on vehicle identification · check a Mercedes-Benz GLS by registration

What exactly fails on vehicle identification?

The most frequent DVSA defect wording in this group on the Mercedes-Benz GLS is “Number plate does not conform to the specified requirements”, recorded 110 times in 2019–2024.

Mercedes-Benz GLS: most frequent vehicle identification defect wordings, 2019–2024 (30+ items each)
DVSA defect wording	Items	Per 100 tests
Number plate does not conform to the specified requirements	110	0.99

Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 11,153 (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 GLS fail the MOT on vehicle identification more than it should?

What exactly fails on vehicle identification?

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