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Triumph Street triple abs vs Triumph Unknown: reliability comparison

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

Triumph Street triple abs
88%
MOT pass rate · 164 vehicles
Triumph Unknown
89%
MOT pass rate · 65,927 vehicles
Verdict: On MOT pass rate the Triumph Street triple abs (88%) 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 Street triple abs Triumph Unknown
MOT pass rate 88% 89% ✓
MOT failure rate 12% 11% ✓
Faults & advisories per test 0.5 ✓ 0.6
Dangerous-fault share 6% 2% ✓
Average mileage 17,018 mi 16,601 mi
Sample size (vehicles) 164 65,927

Most common faults

Triumph Street triple abs

  1. Exhaust noisy (8.1.1 (a))
  2. Rear Tyre worn close to the legal limit (5.2.3 (e))
  3. Front Tyre worn close to the legal limit (5.2.3 (e))
  4. Front Brake indicates slight fluctuation of brake effort (1.2.1 (e))
  5. Rear reflector missing (4.8.2 (a) (ii))
  6. Drive chain slightly loose (6.1.7 (c) (i))

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 Street triple abs (88%) and Triumph Unknown (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Triumph Street triple abs 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.