Triumph 1500 vs Triumph Mk2: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Triumph 1500
74%
MOT pass rate · 37,142 vehicles
Triumph Mk2
90%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Triumph 1500 (74%) and Triumph Mk2 (90%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Triumph 1500 | Triumph Mk2 |
|---|---|---|
| MOT pass rate | 74% | 90% ✓ |
| MOT failure rate | 26% | 10% ✓ |
| Faults & advisories per test | 2.3 | 0.6 ✓ |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 58,068 mi | 34,335 mi |
| Sample size (vehicles) | 37,142 | 2 |
Most common faults
Triumph 1500
- Parking brake: efficiency below requirements (3.7.B.7)
- Windscreen washer provides insufficient washer liquid (8.2.3)
- Nearside Rear wheel bearing has slight play (2.6.2)
- Offside Rear wheel bearing has slight play (2.6.2)
- Brakes imbalanced across an axle (3.7.B.5b)
- Oil leak
Triumph Mk2
- Horn not working (1.6.2a)
- Inner Rear reflector missing (1.5.1a)
- Nearside Headlamp not working on main beam (1.7.5a)
- Nearside Rear Anti-roll bar linkage modified and seriously weakened (2.4.A.2)
- Nearside Rear Body or chassis has an inadequate repair, seriously affecting its strength within 30cm of the body mountings (6.1.B.2)
- Offside Front Brake hose twisted (found during steering lock to lock check) (2.2.D.2b)
Reliability FAQ
On MOT pass rate the Triumph 1500 (74%) and Triumph Mk2 (90%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Triumph 1500 report Full Triumph Mk2 report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.