Ford Fiesta vs Ford Thems: 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 Thems
54%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Ford Fiesta (73%) and Ford Thems (54%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Ford Fiesta | Ford Thems |
|---|---|---|
| MOT pass rate | 73% ✓ | 54% |
| MOT failure rate | 27% ✓ | 46% |
| Faults & advisories per test | 2.1 ✓ | 5.3 |
| Dangerous-fault share | 2% | 0% ✓ |
| Average mileage | 84,529 mi | 77,833 mi |
| Sample size (vehicles) | 2,835,744 | 1 |
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 Thems
- Nearside Front Suspension component mounting prescribed area is excessively corroded (2.4.A.3)
- Offside Rear Suspension spring mounting prescribed area is excessively corroded (2.4.A.3)
- Offside Front suspension has slight play in a lower suspension ball joint (2.5.B.1a)
- Brake pipes cable tied and poorly routed
- Front brake pads low
- Patch repairs all around underside of vehicle and all painted or undersealed
Reliability FAQ
On MOT pass rate the Ford Fiesta (73%) and Ford Thems (54%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Ford Fiesta report Full Ford Thems 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.