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Triumph Tr6 r vs Triumph Unknown: reliability comparison

MOT pass rates, common faults and mileage compared from real UK MOT data.

Triumph Tr6 r
92%
MOT pass rate · 5 vehicles
Triumph Unknown
89%
MOT pass rate · 65,927 vehicles
Verdict: On MOT pass rate the Triumph Tr6 r (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 Tr6 r Triumph Unknown
MOT pass rate 92% ✓ 89%
MOT failure rate 8% ✓ 11%
Faults & advisories per test 0.2 ✓ 0.6
Dangerous-fault share 0% ✓ 2%
Average mileage 40,999 mi 16,601 mi
Sample size (vehicles) 5 65,927

Most common faults

Triumph Tr6 r

  1. Offside Front shock absorber has light misting of stanchion (2.3.3)
  2. Rear suspension bush has slight free play (2.4.A2a(i))
  3. Front Brake lever attachment screws loose (3.1.2b)
  4. Headlamp aim too low (1.6)
  5. Drive chain worn but not considered excessive (6.2.1e)
  6. Front tyre is worn low. Front forks leak1ng slightly.

Triumph Unknown

  1. Exhaust noisy (8.1.1 (a))
  2. Exhaust noisy (7.1.2)
  3. Front Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
  4. COVID-19 6 MONTH EXTENSION
  5. Rear Tyre worn close to the legal limit (5.2.3 (e))
  6. Steering headbearing has slight free play (2.2.2)

Reliability FAQ

On MOT pass rate the Triumph Tr6 r (92%) and Triumph Unknown (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Triumph Tr6 r 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.