Does the Triumph Stag fail the MOT on steering more than it should?
The Triumph Stag records 7.39 steering failure items per 100 initial MOT tests (2019–2024), against 7.68 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 −0.87 to +0.29). It ranks 258 of 640 models on steering (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on steering · check a Triumph Stag by registration
What exactly fails on steering?
The most frequent DVSA defect wording in this group on the Triumph Stag is “Steering rack gaiter or ball joint dust cover damaged or deteriorated”, recorded 284 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Steering rack gaiter or ball joint dust cover damaged or deteriorated | 284 | 3.23 |
| Steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc | 170 | 1.93 |
| A steering ball joint with excessive wear or free play | 52 | 0.59 |
| Power steering fluid leaking or system malfunctioning | 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 brakes failures · Triumph Stag lamps, reflectors and electrics failures · Triumph Stag noise, emissions and leaks failures · Triumph Stag seat belts and airbags failures · Triumph Stag suspension failures · Triumph Stag tyres failures · Triumph Stag visibility failures