Does the Mercedes-Benz GLC fail the MOT on noise, emissions and leaks more than it should?

The Mercedes-Benz GLC records 0.76 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 0.83 expected for a car of the same age mix: about as expected for its class and age (the difference is within its interval or under 0.5 items per 100 tests) (−0.07, 95% interval −0.10 to −0.04). It ranks 279 of 678 models on noise, emissions and leaks (1 = most failures above expected).

Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on noise, emissions and leaks · check a Mercedes-Benz GLC by registration

What exactly fails on noise, emissions and leaks?

The most frequent DVSA defect wording in this group on the Mercedes-Benz GLC is “Engine MIL illuminated indicating a malfunction”, recorded 2,156 times in 2019–2024.

Mercedes-Benz GLC: most frequent noise, emissions and leaks defect wordings, 2019–2024 (30+ items each)
DVSA defect wording	Items	Per 100 tests
Engine MIL illuminated indicating a malfunction	2,156	0.72
Emissions test unable to be completed	39	0.01

Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 299,023 (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

Does the Mercedes-Benz GLC fail the MOT on noise, emissions and leaks more than it should?

What exactly fails on noise, emissions and leaks?

Related pages

Other pages for this model