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Daihatsu Rugger vs Daihatsu Sirion: reliability comparison

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

Daihatsu Rugger
69%
MOT pass rate · 27 vehicles
Daihatsu Sirion
77%
MOT pass rate · 16,687 vehicles
More reliable
Verdict: On MOT pass rate, the Daihatsu Sirion is the more reliable of the two — 77% pass first time versus 69%. It's one signal among several; check the full breakdown below.

Head to head

Measure Daihatsu Rugger Daihatsu Sirion
MOT pass rate 69% 77% ✓
MOT failure rate 31% 23% ✓
Faults & advisories per test 2.6 1.8 ✓
Dangerous-fault share 1% 1%
Average mileage 164,171 mi 80,054 mi
Sample size (vehicles) 27 16,687

Most common faults

Daihatsu Rugger

  1. fuel pipes corroded
  2. Fuel Pipe/s corroded
  3. Fuel pipe/s corroded
  4. Offside Windscreen wiper does not clear the windscreen effectively (8.2.2)
  5. Windscreen has damage to an area less than a 40mm circle outside zone 'A' (8.3.1d)
  6. Nearside Rear Anti-roll bar has slight play in a pin/bush (2.4.G.2)

Daihatsu Sirion

  1. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  3. Front Brake pad(s) wearing thin (3.5.1g)
  4. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))
  6. Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)

Reliability FAQ

On MOT pass rate, the Daihatsu Sirion is the more reliable of the two — 77% pass first time versus 69%. It's one signal among several; check the full breakdown below.

Full Daihatsu Rugger report Full Daihatsu Sirion 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.