Toyota Avensis vs Toyota Sienta hybrid: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Toyota Avensis
75%
MOT pass rate · 274,130 vehicles
Toyota Sienta hybrid
82%
MOT pass rate · 6 vehicles
Verdict: On MOT pass rate the Toyota Avensis (75%) and Toyota Sienta hybrid (82%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Toyota Avensis | Toyota Sienta hybrid |
|---|---|---|
| MOT pass rate | 75% | 82% ✓ |
| MOT failure rate | 25% | 18% ✓ |
| Faults & advisories per test | 1.6 | 0.9 ✓ |
| Dangerous-fault share | 1% ✓ | 3% |
| Average mileage | 137,634 mi | 68,658 mi |
| Sample size (vehicles) | 274,130 | 6 |
Most common faults
Toyota Avensis
- 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)
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Front Brake pad(s) wearing thin (3.5.1g)
- Rear Brake pad(s) wearing thin (3.5.1g)
Toyota Sienta hybrid
- Nearside Rear Axle swivel pins and bushes swivel pin and/or bush slightly worn (5.1.2 (b) (i))
- Offside Rear Axle swivel pins and bushes swivel pin and/or bush slightly worn (5.1.2 (b) (i))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Rear fog lamp missing (4.5.1 (a) (ii))
- Nearside Front Tyre worn close to legal limit/worn on edge edges worn (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge edges worn (5.2.3 (e))
Reliability FAQ
On MOT pass rate the Toyota Avensis (75%) and Toyota Sienta hybrid (82%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Toyota Avensis report Full Toyota Sienta hybrid 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.