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Triumph T120r vs Triumph Unknown: reliability comparison

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

Triumph T120r
91%
MOT pass rate · 333 vehicles
More reliable
Triumph Unknown
89%
MOT pass rate · 65,927 vehicles
Verdict: On MOT pass rate, the Triumph T120r is the more reliable of the two — 91% pass first time versus 89%. It's one signal among several; check the full breakdown below.

Head to head

Measure Triumph T120r Triumph Unknown
MOT pass rate 91% ✓ 89%
MOT failure rate 9% ✓ 11%
Faults & advisories per test 0.4 ✓ 0.6
Dangerous-fault share 0% ✓ 2%
Average mileage 11,776 mi 16,601 mi
Sample size (vehicles) 333 65,927

Most common faults

Triumph T120r

  1. Front Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
  2. Steering headbearing has slight free play (2.2.2)
  3. Rear wheel bearings have slight free play (2.4.A.2c)
  4. Front Wheel has a slightly distorted bead rim. (4.2.2)
  5. Stop lamp does not illuminate immediately a brake applies (1.3.1a)
  6. Rear Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)

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 T120r is the more reliable of the two — 91% pass first time versus 89%. It's one signal among several; check the full breakdown below.

Full Triumph T120r 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.