Does the Triumph Stag fail the MOT on suspension more than it should?
The Triumph Stag records 10.04 suspension failure items per 100 initial MOT tests (2019–2024), against 19.27 expected for a car of the same age mix: less than expected for its class and age (−9.23, 95% interval −10.15 to −8.31). It ranks 584 of 701 models on suspension (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on suspension · check a Triumph Stag by registration
What exactly fails on suspension?
The most frequent DVSA defect wording in this group on the Triumph Stag is “The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired”, recorded 226 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired | 226 | 2.57 |
| A suspension pin, bush or joint excessively worn | 197 | 2.24 |
| A suspension joint dust cover severely deteriorated | 150 | 1.70 |
| A wheel bearing with excessive play | 92 | 1.04 |
| A suspension joint dust cover missing or no longer prevents the ingress of dirt etc | 80 | 0.91 |
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
If a Triumph Stag gets a suspension advisory, how often does it fail next time?
11.1% of Triumph Stag MOTs with a suspension advisory were followed by a fail in the same group at the next MOT, typically 12.3 months and 346 miles later (921 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 921 (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
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 steering failures · Triumph Stag tyres failures · Triumph Stag visibility failures