Ford Fiesta vs Ford Mach 1: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Ford Fiesta
73%
MOT pass rate · 2,835,744 vehicles
Ford Mach 1
86%
MOT pass rate · 9 vehicles
Verdict: On MOT pass rate the Ford Fiesta (73%) and Ford Mach 1 (86%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Ford Fiesta | Ford Mach 1 |
|---|---|---|
| MOT pass rate | 73% | 86% ✓ |
| MOT failure rate | 27% | 14% ✓ |
| Faults & advisories per test | 2.1 | 0.7 ✓ |
| Dangerous-fault share | 2% | 0% ✓ |
| Average mileage | 84,529 mi | 60,043 mi |
| Sample size (vehicles) | 2,835,744 | 9 |
Most common faults
Ford Fiesta
- 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)
- 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 Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Brake pipe slightly corroded (3.6.B.2c)
Ford Mach 1
- Oil leak
- Steering system has slight free play detected at steering wheel (2.2.A.1a)
- Nearside Front position lamp(s) not working (1.1.A.3b)
- Offside Front position lamp(s) not working (1.1.A.3b)
- Nearside Front Steering rack gaiter deteriorated (2.2.D.2d)
- Rear shock absorber bushes misaglined
Reliability FAQ
On MOT pass rate the Ford Fiesta (73%) and Ford Mach 1 (86%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Ford Fiesta report Full Ford Mach 1 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.