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Triumph Avenger tr5 mx vs Triumph Unknown: reliability comparison

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

Triumph Avenger tr5 mx
86%
MOT pass rate · 2 vehicles
Triumph Unknown
89%
MOT pass rate · 65,927 vehicles
Verdict: On MOT pass rate the Triumph Avenger tr5 mx (86%) 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 Avenger tr5 mx Triumph Unknown
MOT pass rate 86% 89% ✓
MOT failure rate 14% 11% ✓
Faults & advisories per test 1.0 0.6 ✓
Dangerous-fault share 0% ✓ 2%
Average mileage 437 mi 16,601 mi
Sample size (vehicles) 2 65,927

Most common faults

Triumph Avenger tr5 mx

  1. only used during daylight hours,not used at times of reduced visibility.
  2. Drive chain slightly tight (6.2.1d)
  3. Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition (7.1.2)
  4. Horn not loud enough to be heard by another road user (1.7.3a)
  5. Oil leak
  6. Front Wheel has a slightly distorted bead rim. (4.2.2)

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 Avenger tr5 mx (86%) and Triumph Unknown (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Triumph Avenger tr5 mx 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.