Skip to content

Triumph Super nine vs Triumph Unknown: reliability comparison

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

Triumph Super nine
75%
MOT pass rate · 2 vehicles
Triumph Unknown
89%
MOT pass rate · 65,927 vehicles
Verdict: On MOT pass rate the Triumph Super nine (75%) 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 Super nine Triumph Unknown
MOT pass rate 75% 89% ✓
MOT failure rate 25% 11% ✓
Faults & advisories per test 3.0 0.6 ✓
Dangerous-fault share 0% ✓ 2%
Average mileage 39,820 mi 16,601 mi
Sample size (vehicles) 2 65,927

Most common faults

Triumph Super nine

  1. Nearside Front Leaf spring deteriorated but not seriously weakened (2.4.B.1a)
  2. Nearside Front Steering pivot point has slight play (2.2.B.1g)
  3. Offside Front Steering pivot point has slight play (2.2.B.1g)
  4. Ball joint has slight play (2.2.B.1f)
  5. Driver's seat insecure (6.2.A.1)
  6. Front position lamp(s) not working (1.1.A.3b)

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 Super nine (75%) and Triumph Unknown (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Triumph Super nine 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.