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Triumph T140 e vs Triumph Unknown: reliability comparison

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

Triumph T140 e
77%
MOT pass rate · 5 vehicles
Triumph Unknown
89%
MOT pass rate · 65,927 vehicles
Verdict: On MOT pass rate the Triumph T140 e (77%) 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 T140 e Triumph Unknown
MOT pass rate 77% 89% ✓
MOT failure rate 23% 11% ✓
Faults & advisories per test 0.7 0.6 ✓
Dangerous-fault share 0% ✓ 2%
Average mileage 5,908 mi 16,601 mi
Sample size (vehicles) 5 65,927

Most common faults

Triumph T140 e

  1. Front Tyre worn close to the legal limit (4.1.3(ii))
  2. Rear Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
  3. Stop lamp does not illuminate immediately a brake applies (1.3.1a)
  4. Steering movement slightly stiff (2.2.1a)
  5. Front Brake lever is bent but brake can still be readily applied (3.1.3c)
  6. Handlebar mounting clamp bolt loose (2.1.1a)

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 T140 e (77%) and Triumph Unknown (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Triumph T140 e 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.