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Triumph Rock3 vs Triumph Unknown: reliability comparison

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

Triumph Rock3
64%
MOT pass rate · 1 vehicles
Triumph Unknown
89%
MOT pass rate · 65,927 vehicles
Verdict: On MOT pass rate the Triumph Rock3 (64%) 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 Rock3 Triumph Unknown
MOT pass rate 64% 89% ✓
MOT failure rate 36% 11% ✓
Faults & advisories per test 0.3 ✓ 0.6
Dangerous-fault share 0% ✓ 2%
Average mileage 15,356 mi 16,601 mi
Sample size (vehicles) 1 65,927

Most common faults

Triumph Rock3

  1. Rear Rear position lamp damaged but function not impaired (1.1.1b)
  2. Rear Stop lamp damaged but function not impaired (1.3.3a)
  3. Rear Rear reflector on motorcycle missing (1.4.1)
  4. Horn control defective (1.7.2a)
  5. Registration plate character(s) likely to be misread (6.3.4b)
  6. Horn not loud enough to be heard by another road user (1.7.3a)

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 Rock3 (64%) and Triumph Unknown (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Triumph Rock3 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.