Fiat 500 vs Fiat Tempra diesel: 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 Tempra diesel
100%
MOT pass rate · 312 vehicles
Verdict: On MOT pass rate the Fiat 500 (77%) and Fiat Tempra diesel (100%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Fiat 500 | Fiat Tempra diesel |
|---|---|---|
| MOT pass rate | 77% | 100% ✓ |
| MOT failure rate | 23% | 0% ✓ |
| Faults & advisories per test | 2.0 | 2.0 |
| Dangerous-fault share | 3% | 0% ✓ |
| Average mileage | 62,906 mi | 108,723 mi |
| Sample size (vehicles) | 333,596 | 312 |
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 Tempra diesel
- Offside Front Seat belt damaged but not affecting the operation of the belt (5.2.2a)
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Nearside Rear Body has slight corrosion (6.1.B.2)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- rear gearbox mount deteriorating
Reliability FAQ
On MOT pass rate the Fiat 500 (77%) and Fiat Tempra diesel (100%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Fiat 500 report Full Fiat Tempra diesel 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.