Toyota 4j vs Toyota Yaris: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Toyota 4j
100%
MOT pass rate · 1 vehicles
Toyota Yaris
78%
MOT pass rate · 631,425 vehicles
Verdict: On MOT pass rate the Toyota 4j (100%) 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 4j | Toyota Yaris |
|---|---|---|
| MOT pass rate | 100% ✓ | 78% |
| MOT failure rate | 0% ✓ | 22% |
| Faults & advisories per test | 1.0 ✓ | 1.7 |
| Dangerous-fault share | 0% ✓ | 2% |
| Average mileage | 2,500 mi | 85,387 mi |
| Sample size (vehicles) | 1 | 631,425 |
Most common faults
Toyota 4j
- Front Brake pad(s) wearing thin (3.5.1g)
- Offside Front Steering rack deformed but serviceable (2.2.C.1d)
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 4j (100%) and Toyota Yaris (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Toyota 4j 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.