Does the BMW 3 Series fail the MOT on seat belts and airbags more than it should?
The BMW 3 Series records 1.29 seat belts and airbags failure items per 100 initial MOT tests (2019–2024), against 1.41 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) (−0.12, 95% interval −0.14 to −0.11). It ranks 334 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 BMW 3 Series by registration
What exactly fails on seat belts and airbags?
The most frequent DVSA defect wording in this group on the BMW 3 Series is “An SRS malfunction indicator lamp (MIL) indicates a system malfunction”, recorded 26,495 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| An SRS malfunction indicator lamp (MIL) indicates a system malfunction | 26,495 | 0.85 |
| The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired | 4,713 | 0.15 |
| Seat belt buckle missing, damaged or not functioning as intended | 3,804 | 0.12 |
| Seat belt not functioning as intended or of an incorrect type | 1,646 | 0.05 |
| An airbag obviously inoperative | 887 | 0.03 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 3,110,401 (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
If a BMW 3 Series gets a seat belts and airbags advisory, how often does it fail next time?
5.3% of BMW 3 Series MOTs with a seat belts and airbags advisory were followed by a fail in the same group at the next MOT, typically 12.1 months and 4,399 miles later (8,039 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 8,039 (advisories followed) · Method: the same vehicles followed to their next ordinary MOT · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
Other pages for this model
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