Toyota Iq vs Toyota Yaris: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Toyota Iq
84%
MOT pass rate · 19,883 vehicles
More reliable
Toyota Yaris
78%
MOT pass rate · 631,425 vehicles
Verdict: On MOT pass rate, the Toyota Iq is the more reliable of the two — 84% pass first time versus 78%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Toyota Iq | Toyota Yaris |
|---|---|---|
| MOT pass rate | 84% ✓ | 78% |
| MOT failure rate | 16% ✓ | 22% |
| Faults & advisories per test | 1.3 ✓ | 1.7 |
| Dangerous-fault share | 3% | 2% ✓ |
| Average mileage | 75,290 mi | 85,387 mi |
| Sample size (vehicles) | 19,883 | 631,425 |
Most common faults
Toyota Iq
- Nearside 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))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
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 Iq is the more reliable of the two — 84% pass first time versus 78%. It's one signal among several; check the full breakdown below.
Full Toyota Iq 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.