Does the Seat Mii fail the MOT on brakes more than it should?
The Seat Mii records 7.09 brakes failure items per 100 initial MOT tests (2019–2024), against 6.80 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) (+0.29, 95% interval +0.12 to +0.45). It ranks 304 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 Seat Mii by registration
What exactly fails on brakes?
The most frequent DVSA defect wording in this group on the Seat Mii is “Significant brake effort recorded with no brake applied indicating a binding brake”, recorded 2,278 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Significant brake effort recorded with no brake applied indicating a binding brake | 2,278 | 2.30 |
| a brake lining or pad worn below 1.5mm | 870 | 0.88 |
| Brakes imbalance across an axle such that the braking effort from any wheel is less than 70% of the maximum effort recorded from the other wheel on the same axle. | 569 | 0.57 |
| Parking brake lever has excessive movement indicating incorrect adjustment | 481 | 0.48 |
| Parking brake efficiency below minimum requirement | 458 | 0.46 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 99,179 (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 Seat Mii gets a brakes advisory, how often does it fail next time?
11.7% of Seat Mii MOTs with a brakes advisory were followed by a fail in the same group at the next MOT, typically 12 months and 6,206 miles later (10,090 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 10,090 (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
Seat Mii 2012 · Seat Mii 2013 · Seat Mii 2014 · Seat Mii 2015 · Seat Mii 2016 · Seat Mii 2017 · Seat Mii 2018 · Seat Mii 2019 · Seat Mii 2020 · Seat Mii in Norway · Seat Mii in Finland · Seat Mii in the Netherlands · Seat Mii by postcode area · Seat Mii body, chassis and structure failures · Seat Mii vehicle identification failures · Seat Mii lamps, reflectors and electrics failures · Seat Mii noise, emissions and leaks failures · Seat Mii road wheels failures · Seat Mii seat belts and airbags failures · Seat Mii steering failures · Seat Mii suspension failures · Seat Mii tyres failures · Seat Mii visibility failures