Daihatsu F77 vs Daihatsu Sirion: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Daihatsu F77
88%
MOT pass rate · 1 vehicles
Daihatsu Sirion
77%
MOT pass rate · 16,687 vehicles
Verdict: On MOT pass rate the Daihatsu F77 (88%) 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 F77 | Daihatsu Sirion |
|---|---|---|
| MOT pass rate | 88% ✓ | 77% |
| MOT failure rate | 12% ✓ | 23% |
| Faults & advisories per test | 0.6 ✓ | 1.8 |
| Dangerous-fault share | 0% ✓ | 1% |
| Average mileage | 97,286 mi | 80,054 mi |
| Sample size (vehicles) | 1 | 16,687 |
Most common faults
Daihatsu F77
- Offside Rear Leaf spring fractured (2.4.B.1a)
- Offside Rear Rear fog lamp missing (1.3.2a)
- Offside Rear Shock absorber detached (2.7.2b)
- Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings (6.1.B.2)
- Parking brake: efficiency below requirements (3.7.B.7)
Daihatsu Sirion
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Front Brake pad(s) wearing thin (3.5.1g)
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))
- Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)
Reliability FAQ
On MOT pass rate the Daihatsu F77 (88%) and Daihatsu Sirion (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Daihatsu F77 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.