Fiat 500 vs Fiat Sport 850: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Fiat 500
77%
MOT pass rate · 333,596 vehicles
Fiat Sport 850
67%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Fiat 500 (77%) and Fiat Sport 850 (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Fiat 500 | Fiat Sport 850 |
|---|---|---|
| MOT pass rate | 77% ✓ | 67% |
| MOT failure rate | 23% ✓ | 33% |
| Faults & advisories per test | 2.0 | 2.0 |
| Dangerous-fault share | 3% | 0% ✓ |
| Average mileage | 62,906 mi | 48,296 mi |
| Sample size (vehicles) | 333,596 | 2 |
Most common faults
Fiat 500
- 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))
- Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Nearside Rear Coil spring corroded (5.3.1 (b) (i))
Fiat Sport 850
- Front Windscreen washer provides insufficient washer liquid (8.2.3)
- Nearside Front Direction indicator incorrect colour (1.4.A.2f)
- Offside Front Direction indicator incorrect colour (1.4.A.2f)
- Offside Rear Headlamp aim beam image kick up to the offside (1.6.B1)
- Nearside Front Brake hose excessively damaged (3.6.B.4d)
- Nearside Rear rear brake binding (3.7.B.1)
Reliability FAQ
On MOT pass rate the Fiat 500 (77%) and Fiat Sport 850 (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Fiat 500 report Full Fiat Sport 850 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.