Toyota B-b vs Toyota Yaris: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Toyota B-b
60%
MOT pass rate · 1 vehicles
Toyota Yaris
78%
MOT pass rate · 631,425 vehicles
Verdict: On MOT pass rate the Toyota B-b (60%) and Toyota Yaris (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Toyota B-b | Toyota Yaris |
|---|---|---|
| MOT pass rate | 60% | 78% ✓ |
| MOT failure rate | 40% | 22% ✓ |
| Faults & advisories per test | 3.0 | 1.7 ✓ |
| Dangerous-fault share | 0% ✓ | 2% |
| Average mileage | 204,102 mi | 85,387 mi |
| Sample size (vehicles) | 1 | 631,425 |
Most common faults
Toyota B-b
- Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))
- Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))
- Front brake disc slightly pitted (3.5.1h)
- Nearside Front Anti-roll bar rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
- Offside Front Anti-roll bar rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
Toyota Yaris
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
Reliability FAQ
On MOT pass rate the Toyota B-b (60%) and Toyota Yaris (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Toyota B-b report Full Toyota Yaris 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.