Alfa romeo 156 vs Alfa romeo 157: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Alfa romeo 156
66%
MOT pass rate · 48,347 vehicles
Alfa romeo 157
90%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Alfa romeo 156 (66%) and Alfa romeo 157 (90%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Alfa romeo 156 | Alfa romeo 157 |
|---|---|---|
| MOT pass rate | 66% | 90% ✓ |
| MOT failure rate | 34% | 10% ✓ |
| Faults & advisories per test | 2.3 | 1.0 ✓ |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 109,793 mi | 104,920 mi |
| Sample size (vehicles) | 48,347 | 1 |
Most common faults
Alfa romeo 156
- 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)
- Nearside Front position lamp(s) not working (1.1.A.3b)
- Oil leak
Alfa romeo 157
- Child seat fitted not allowing full inspection of adult belt
- Offside Front Seat belt damaged but webbing not significantly weakened (5.2.2a)
- Nearside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1)
- Offside Rear Tyre has a bulge, caused by separation or partial failure of its structure (4.1.D.1b)
- front brake disks worn
- Nearside Front Anti-roll bar rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
Reliability FAQ
On MOT pass rate the Alfa romeo 156 (66%) and Alfa romeo 157 (90%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Alfa romeo 156 report Full Alfa romeo 157 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.