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Triumph 1500 vs Triumph Tr5: reliability comparison

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

Triumph 1500
74%
MOT pass rate · 37,142 vehicles
Triumph Tr5
86%
MOT pass rate · 1,108 vehicles
More reliable
Verdict: On MOT pass rate, the Triumph Tr5 is the more reliable of the two — 86% pass first time versus 74%. It's one signal among several; check the full breakdown below.

Head to head

Measure Triumph 1500 Triumph Tr5
MOT pass rate 74% 86% ✓
MOT failure rate 26% 14% ✓
Faults & advisories per test 2.3 0.8 ✓
Dangerous-fault share 0% 0%
Average mileage 58,068 mi 47,967 mi
Sample size (vehicles) 37,142 1,108

Most common faults

Triumph 1500

  1. Parking brake: efficiency below requirements (3.7.B.7)
  2. Windscreen washer provides insufficient washer liquid (8.2.3)
  3. Nearside Rear wheel bearing has slight play (2.6.2)
  4. Offside Rear wheel bearing has slight play (2.6.2)
  5. Brakes imbalanced across an axle (3.7.B.5b)
  6. Oil leak

Triumph Tr5

  1. Nearside Front wheel bearing has slight play (2.5.A.3c)
  2. Offside Front wheel bearing has slight play (2.5.A.3c)
  3. Oil leak
  4. Nearside Rear wheel bearing has slight play (2.6.2)
  5. Horn not working (1.6.2a)
  6. Offside Rear wheel bearing has slight play (2.6.2)

Reliability FAQ

On MOT pass rate, the Triumph Tr5 is the more reliable of the two — 86% pass first time versus 74%. It's one signal among several; check the full breakdown below.

Full Triumph 1500 report Full Triumph Tr5 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.