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Daihatsu Fourtrack rocky vs Daihatsu Sirion: reliability comparison

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

Daihatsu Fourtrack rocky
67%
MOT pass rate · 1 vehicles
Daihatsu Sirion
77%
MOT pass rate · 16,687 vehicles
Verdict: On MOT pass rate the Daihatsu Fourtrack rocky (67%) and Daihatsu Sirion (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Daihatsu Fourtrack rocky Daihatsu Sirion
MOT pass rate 67% 77% ✓
MOT failure rate 33% 23% ✓
Faults & advisories per test 10.2 1.8 ✓
Dangerous-fault share 2% 1% ✓
Average mileage 99,832 mi 80,054 mi
Sample size (vehicles) 1 16,687

Most common faults

Daihatsu Fourtrack rocky

  1. Nearside Front Seat belt webbing slightly damaged or frayed (7.1.2 (b) (ii))
  2. Nearside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  3. Nearside Rear Shock absorbers has a slightly worn bush (5.3.2 (c))
  4. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  5. Offside Front Shock absorbers has a slightly worn bush (5.3.2 (c))
  6. Offside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

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 Fourtrack rocky (67%) and Daihatsu Sirion (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Daihatsu Fourtrack rocky 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.