Skip to content

Triumph Rs955i vs Triumph Unknown: reliability comparison

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

Triumph Rs955i
60%
MOT pass rate · 1 vehicles
Triumph Unknown
89%
MOT pass rate · 65,927 vehicles
Verdict: On MOT pass rate the Triumph Rs955i (60%) 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 Rs955i Triumph Unknown
MOT pass rate 60% 89% ✓
MOT failure rate 40% 11% ✓
Faults & advisories per test 2.8 0.6 ✓
Dangerous-fault share 14% 2% ✓
Average mileage 64,125 mi 16,601 mi
Sample size (vehicles) 1 65,927

Most common faults

Triumph Rs955i

  1. Rear Roller brake test indicates a slightly grabbing brake (3.3.A1b)
  2. Horn sound not in accordance with requirements (7.7 (c))
  3. Front Tyre tread depth is below minimum requirements of 1.0mm (5.2.3 (e))
  4. Rear Tyre tread depth is below minimum requirements of 1.0mm (5.2.3 (e))
  5. Drive chain slightly loose (6.1.7 (c) (i))
  6. Front Brake excessively binding (1.2.1 (f))

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 Rs955i (60%) and Triumph Unknown (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Triumph Rs955i 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.