Seat Leon vs Seat Mii s: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Seat Leon
78%
MOT pass rate · 262,792 vehicles
Seat Mii s
82%
MOT pass rate · 6 vehicles
Verdict: On MOT pass rate the Seat Leon (78%) and Seat Mii s (82%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Seat Leon | Seat Mii s |
|---|---|---|
| MOT pass rate | 78% | 82% ✓ |
| MOT failure rate | 22% | 18% ✓ |
| Faults & advisories per test | 1.8 | 0.0 ✓ |
| Dangerous-fault share | 3% | — ✓ |
| Average mileage | 103,954 mi | 65,079 mi |
| Sample size (vehicles) | 262,792 | 6 |
Most common faults
Seat Leon
- 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))
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Nearside Front Shock absorbers has light misting of oil (5.3.2 (b))
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
Seat Mii s
No fault breakdown available.
Reliability FAQ
On MOT pass rate the Seat Leon (78%) and Seat Mii s (82%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Seat Leon report Full Seat Mii s 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.