Does the MG 3 fail the MOT on brakes more than it should?
The MG 3 records 6.56 brakes failure items per 100 initial MOT tests (2019–2024), against 4.68 expected for a car of the same age mix: more than expected for its class and age (+1.88, 95% interval +1.71 to +2.05). It ranks 233 of 712 models on brakes (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on brakes · check a MG 3 by registration
What exactly fails on brakes?
The most frequent DVSA defect wording in this group on the MG 3 is “a brake lining or pad worn below 1.5mm”, recorded 1,196 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| a brake lining or pad worn below 1.5mm | 1,196 | 1.36 |
| Parking brake efficiency below minimum requirement | 834 | 0.95 |
| Brake pipe damaged or excessively corroded | 810 | 0.92 |
| Brake disc or drum significantly and obviously worn | 608 | 0.69 |
| Excessive fluctuation in brake effort through each wheel revolution. | 427 | 0.48 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 88,117 (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 MG 3 gets a brakes advisory, how often does it fail next time?
12.0% of MG 3 MOTs with a brakes advisory were followed by a fail in the same group at the next MOT, typically 12 months and 6,334 miles later (9,713 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 9,713 (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
MG 3 2013 · MG 3 2014 · MG 3 2015 · MG 3 2016 · MG 3 2017 · MG 3 2018 · MG 3 2019 · MG 3 2020 · MG 3 by postcode area · MG 3 body, chassis and structure failures · MG 3 vehicle identification failures · MG 3 lamps, reflectors and electrics failures · MG 3 noise, emissions and leaks failures · MG 3 road wheels failures · MG 3 seat belts and airbags failures · MG 3 steering failures · MG 3 suspension failures · MG 3 tyres failures · MG 3 visibility failures