Ford Mondeo vs Ford Shelby: 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 Shelby
90%
MOT pass rate · 22 vehicles
More reliable
Verdict: On MOT pass rate, the Ford Shelby is the more reliable of the two — 90% pass first time versus 70%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Ford Mondeo | Ford Shelby |
|---|---|---|
| MOT pass rate | 70% | 90% ✓ |
| MOT failure rate | 30% | 10% ✓ |
| Faults & advisories per test | 2.2 | 0.6 ✓ |
| Dangerous-fault share | 1% ✓ | 3% |
| Average mileage | 130,467 mi | 50,341 mi |
| Sample size (vehicles) | 1,212,823 | 22 |
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 Shelby
- Offside Rear Shock absorber has a light misting of oil (2.7.3)
- Nearside Front Lower Suspension arm has slight play in a ball joint (2.4.G.2)
- Offside Front Lower Suspension arm has slight play in a ball joint (2.4.G.2)
- Offside Rear Parking brake: parking brake efficiency only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.7)
- Nearside Front position lamp(s) not working (1.1.A.3b)
- Parking brake: efficiency below requirements (3.7.B.7)
Reliability FAQ
On MOT pass rate, the Ford Shelby is the more reliable of the two — 90% pass first time versus 70%. It's one signal among several; check the full breakdown below.
Full Ford Mondeo report Full Ford Shelby 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.