Daihatsu Astrai 7 vs Daihatsu Sirion: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Daihatsu Astrai 7
72%
MOT pass rate · 4 vehicles
Daihatsu Sirion
77%
MOT pass rate · 16,687 vehicles
Verdict: On MOT pass rate the Daihatsu Astrai 7 (72%) 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 Astrai 7 | Daihatsu Sirion |
|---|---|---|
| MOT pass rate | 72% | 77% ✓ |
| MOT failure rate | 28% | 23% ✓ |
| Faults & advisories per test | 3.1 | 1.8 ✓ |
| Dangerous-fault share | 1% | 1% |
| Average mileage | 152,185 mi | 80,054 mi |
| Sample size (vehicles) | 4 | 16,687 |
Most common faults
Daihatsu Astrai 7
- Oil leak, but not excessive (8.4.1 (a) (i))
- Offside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))
- Play in steering rack inner joint(s)
- Nearside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))
- Offside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Offside Obligatory mirror slightly loose (3.3 (b) (i))
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 Astrai 7 (72%) and Daihatsu Sirion (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Daihatsu Astrai 7 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.