Ford Fiesta vs Ford P100: 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
More reliable
Ford P100
66%
MOT pass rate · 16,307 vehicles
Verdict: On MOT pass rate, the Ford Fiesta is the more reliable of the two — 73% pass first time versus 66%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Ford Fiesta | Ford P100 |
|---|---|---|
| MOT pass rate | 73% ✓ | 66% |
| MOT failure rate | 27% ✓ | 34% |
| Faults & advisories per test | 2.1 ✓ | 2.6 |
| Dangerous-fault share | 2% | 0% ✓ |
| Average mileage | 84,529 mi | 64,003 mi |
| Sample size (vehicles) | 2,835,744 | 16,307 |
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 P100
- Offside Rear fog lamp not working (1.3.2b)
- Oil leak
- Nearside Stop lamp not working (1.2.1b)
- Offside Stop lamp not working (1.2.1b)
- Nearside Front Brake hose slightly deteriorated (3.6.B.4d)
- Offside Front Brake hose slightly deteriorated (3.6.B.4d)
Reliability FAQ
On MOT pass rate, the Ford Fiesta is the more reliable of the two — 73% pass first time versus 66%. It's one signal among several; check the full breakdown below.
Full Ford Fiesta report Full Ford P100 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.