Hyundai Accent siena vs Hyundai I20: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Hyundai Accent siena
63%
MOT pass rate · 218 vehicles
Hyundai I20
80%
MOT pass rate · 135,974 vehicles
More reliable
Verdict: On MOT pass rate, the Hyundai I20 is the more reliable of the two — 80% pass first time versus 63%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Hyundai Accent siena | Hyundai I20 |
|---|---|---|
| MOT pass rate | 63% | 80% ✓ |
| MOT failure rate | 37% | 20% ✓ |
| Faults & advisories per test | 1.8 | 1.6 ✓ |
| Dangerous-fault share | 0% ✓ | 3% |
| Average mileage | 87,940 mi | 69,554 mi |
| Sample size (vehicles) | 218 | 135,974 |
Most common faults
Hyundai Accent siena
- Nearside 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 Front Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Brake pipe slightly corroded (3.6.B.2c)
- Offside Front Tyre tread depth below requirements of 1.6mm (4.1.E.1)
- Offside Rear Brake pipe excessively corroded (3.6.B.2c)
Hyundai I20
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- 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))
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))
Reliability FAQ
On MOT pass rate, the Hyundai I20 is the more reliable of the two — 80% pass first time versus 63%. It's one signal among several; check the full breakdown below.
Full Hyundai Accent siena report Full Hyundai I20 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.