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Triumph Tr5 convertable. vs Triumph Unknown: reliability comparison

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

Triumph Tr5 convertable.
82%
MOT pass rate · 1 vehicles
Triumph Unknown
89%
MOT pass rate · 65,927 vehicles
Verdict: On MOT pass rate the Triumph Tr5 convertable. (82%) 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 Tr5 convertable. Triumph Unknown
MOT pass rate 82% 89% ✓
MOT failure rate 18% 11% ✓
Faults & advisories per test 0.7 0.6 ✓
Dangerous-fault share 0% ✓ 2%
Average mileage 59,220 mi 16,601 mi
Sample size (vehicles) 1 65,927

Most common faults

Triumph Tr5 convertable.

  1. Offside Front wheel bearing has slight play (2.5.A.3c)
  2. all four tyres have tubes fitted when sidewall instructions state tubeless
  3. Nearside Front Headlamp aim beam image kick up to the offside (1.8)
  4. Offside Front Headlamp aim beam image kick up to the offside (1.8)
  5. Offside Front Intermediate drop arm insecure (2.2.B.1a)
  6. Oil leak

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 Tr5 convertable. (82%) and Triumph Unknown (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Triumph Tr5 convertable. 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.