Triumph Ttr6 vs Triumph Unknown: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Triumph Ttr6
92%
MOT pass rate · 1 vehicles
Triumph Unknown
89%
MOT pass rate · 65,927 vehicles
Verdict: On MOT pass rate the Triumph Ttr6 (92%) and Triumph Unknown (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Triumph Ttr6 | Triumph Unknown |
|---|---|---|
| MOT pass rate | 92% ✓ | 89% |
| MOT failure rate | 8% ✓ | 11% |
| Faults & advisories per test | 0.3 ✓ | 0.6 |
| Dangerous-fault share | 0% ✓ | 2% |
| Average mileage | 6,629 mi | 16,601 mi |
| Sample size (vehicles) | 1 | 65,927 |
Most common faults
Triumph Ttr6
- Nearside Front Direction indicator not working (1.4.A.2c)
- Nearside Rear Direction indicator not working (1.4.A.2c)
- Offside Front Direction indicator not working (1.4.A.2c)
- Offside Rear Direction indicator not working (1.4.A.2c)
Triumph Unknown
- Exhaust noisy (8.1.1 (a))
- Exhaust noisy (7.1.2)
- Front Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
- COVID-19 6 MONTH EXTENSION
- Rear Tyre worn close to the legal limit (5.2.3 (e))
- Steering headbearing has slight free play (2.2.2)
Reliability FAQ
On MOT pass rate the Triumph Ttr6 (92%) and Triumph Unknown (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Triumph Ttr6 report Full Triumph Unknown 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.