Ford Mondeo vs Ford St170: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Ford Mondeo
70%
MOT pass rate · 1,212,823 vehicles
Ford St170
76%
MOT pass rate · 3 vehicles
Verdict: On MOT pass rate the Ford Mondeo (70%) and Ford St170 (76%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Ford Mondeo | Ford St170 |
|---|---|---|
| MOT pass rate | 70% | 76% ✓ |
| MOT failure rate | 30% | 24% ✓ |
| Faults & advisories per test | 2.2 | 2.1 ✓ |
| Dangerous-fault share | 1% ✓ | 2% |
| Average mileage | 130,467 mi | 97,423 mi |
| Sample size (vehicles) | 1,212,823 | 3 |
Most common faults
Ford Mondeo
- 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 Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Parking brake: efficiency below requirements (3.7.B.7)
- Front Brake pad(s) wearing thin (3.5.1g)
Ford St170
- Oil leak
- brake pipes corroded
- Oil leak, but not excessive (8.4.1 (a) (i))
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Rear brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)
- Trailing arm rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
Reliability FAQ
On MOT pass rate the Ford Mondeo (70%) and Ford St170 (76%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Ford Mondeo report Full Ford St170 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.