Does the Triumph Stag fail the MOT on brakes more than it should?
The Triumph Stag records 11.47 brakes failure items per 100 initial MOT tests (2019–2024), against 20.31 expected for a car of the same age mix: less than expected for its class and age (−8.84, 95% interval −9.78 to −7.90). It ranks 637 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 Triumph Stag by registration
What exactly fails on brakes?
The most frequent DVSA defect wording in this group on the Triumph Stag is “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.”, recorded 178 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| 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. | 178 | 2.02 |
| Parking brake efficiency below minimum requirement | 168 | 1.91 |
| Significant brake effort recorded with no brake applied indicating a binding brake | 161 | 1.83 |
| Parking brake inoperative on one side | 46 | 0.52 |
| Service brake efficiency below minimum requirement | 44 | 0.50 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 8,805 (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
Other pages for this model
Triumph Stag by postcode area · Triumph Stag body, chassis and structure failures · Triumph Stag lamps, reflectors and electrics failures · Triumph Stag noise, emissions and leaks failures · Triumph Stag seat belts and airbags failures · Triumph Stag steering failures · Triumph Stag suspension failures · Triumph Stag tyres failures · Triumph Stag visibility failures