Does the Triumph Stag fail the MOT on lamps, reflectors and electrics more than it should?
The Triumph Stag records 19.00 lamps, reflectors and electrics failure items per 100 initial MOT tests (2019–2024), against 29.50 expected for a car of the same age mix: less than expected for its class and age (−10.50, 95% interval −11.63 to −9.36). It ranks 615 of 729 models on lamps, reflectors and electrics (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on lamps, reflectors and electrics · check a Triumph Stag by registration
What exactly fails on lamps, reflectors and electrics?
The most frequent DVSA defect wording in this group on the Triumph Stag is “The aim of a headlamp is not within limits laid down in the requirements”, recorded 304 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| The aim of a headlamp is not within limits laid down in the requirements | 304 | 3.45 |
| A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED | 270 | 3.07 |
| A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | 176 | 2.00 |
| A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | 156 | 1.77 |
| Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | 100 | 1.14 |
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 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