Toyota Aygo vs Toyota Sero: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Toyota Aygo
81%
MOT pass rate · 285,772 vehicles
Toyota Sero
60%
MOT pass rate · 4 vehicles
Verdict: On MOT pass rate the Toyota Aygo (81%) and Toyota Sero (60%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Toyota Aygo | Toyota Sero |
|---|---|---|
| MOT pass rate | 81% ✓ | 60% |
| MOT failure rate | 19% ✓ | 40% |
| Faults & advisories per test | 1.7 ✓ | 3.1 |
| Dangerous-fault share | 3% | 0% ✓ |
| Average mileage | 60,869 mi | 146,629 mi |
| Sample size (vehicles) | 285,772 | 4 |
Most common faults
Toyota Aygo
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- 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))
- Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
Toyota Sero
- Nearside Rear Road wheel with a slightly distorted bead rim (4.2.A.1a)
- Offside Rear Rear fog lamp not working (1.3.2b)
- Nearside Front brake disc slightly scored (3.5.1h)
- Nearside Power steering component(s) has slight seepage from a component (2.3.3b)
- Offside Front brake disc slightly scored (3.5.1h)
- Offside Rear Shock absorber has a light misting of oil (2.7.3)
Reliability FAQ
On MOT pass rate the Toyota Aygo (81%) and Toyota Sero (60%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Toyota Aygo report Full Toyota Sero 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.