Does the Mercedes-Benz GLC fail the MOT on seat belts and airbags more than it should?

The Mercedes-Benz GLC records 0.17 seat belts and airbags failure items per 100 initial MOT tests (2019–2024), against 0.30 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) (−0.13, 95% interval −0.15 to −0.11). It ranks 336 of 627 models on seat belts and airbags (1 = most failures above expected).

Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on seat belts and airbags · check a Mercedes-Benz GLC by registration

What exactly fails on seat belts and airbags?

The most frequent DVSA defect wording in this group on the Mercedes-Benz GLC is “An SRS malfunction indicator lamp (MIL) indicates a system malfunction”, recorded 179 times in 2019–2024.

Mercedes-Benz GLC: most frequent seat belts and airbags defect wordings, 2019–2024 (30+ items each)
DVSA defect wording	Items	Per 100 tests
An SRS malfunction indicator lamp (MIL) indicates a system malfunction	179	0.06
Seat belt buckle missing, damaged or not functioning as intended	169	0.06
Seat belt not functioning as intended or of an incorrect type	79	0.03

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 seat belts and airbags more than it should?

What exactly fails on seat belts and airbags?

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