Does the Mercedes-Benz GLB fail the MOT on lamps, reflectors and electrics more than it should?

The Mercedes-Benz GLB records 0.84 lamps, reflectors and electrics failure items per 100 initial MOT tests (2019–2024), against 2.04 expected for a car of the same age mix: less than expected for its class and age (−1.20, 95% interval −1.48 to −0.91). It ranks 351 of 729 models on lamps, reflectors and electrics (1 = most failures above expected).

Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on lamps, reflectors and electrics · check a Mercedes-Benz GLB by registration

No single lamps, reflectors and electrics defect wording reaches 30 items on the Mercedes-Benz GLB; the failures are spread across several.