Ford Flex vs Ford Mondeo: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Ford Flex
77%
MOT pass rate · 49 vehicles
Ford Mondeo
70%
MOT pass rate · 1,212,823 vehicles
Verdict: On MOT pass rate the Ford Flex (77%) and Ford Mondeo (70%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Ford Flex | Ford Mondeo |
|---|---|---|
| MOT pass rate | 77% ✓ | 70% |
| MOT failure rate | 23% ✓ | 30% |
| Faults & advisories per test | 2.0 ✓ | 2.2 |
| Dangerous-fault share | 2% | 1% ✓ |
| Average mileage | 69,459 mi | 130,467 mi |
| Sample size (vehicles) | 49 | 1,212,823 |
Most common faults
Ford Flex
- Oil leak, but not excessive (8.4.1 (a) (i))
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Rear Child Seat fitted not allowing full inspection of adult belt
- Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- Child seat fitted not allowing full inspection of adult belt
- Nearside Rear Anti-roll bar linkage ball joint has slight play (5.3.4 (a) (i))
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)
Reliability FAQ
On MOT pass rate the Ford Flex (77%) and Ford Mondeo (70%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Ford Flex report Full Ford Mondeo 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.