Alfa romeo 156 vs Alfa romeo 1750: 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 1750
78%
MOT pass rate · 567 vehicles
More reliable
Verdict: On MOT pass rate, the Alfa romeo 1750 is the more reliable of the two — 78% pass first time versus 66%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Alfa romeo 156 | Alfa romeo 1750 |
|---|---|---|
| MOT pass rate | 66% | 78% ✓ |
| MOT failure rate | 34% | 22% ✓ |
| Faults & advisories per test | 2.3 | 1.4 ✓ |
| Dangerous-fault share | 0% ✓ | 1% |
| Average mileage | 109,793 mi | 56,423 mi |
| Sample size (vehicles) | 48,347 | 567 |
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 1750
- Oil leak
- Windscreen washer provides insufficient washer liquid (8.2.3)
- Steering box has a slight oil leak (2.2.D.2e)
- Nearside Stop lamp not working (1.2.1b)
- Offside Stop lamp not working (1.2.1b)
- Oil leak, but not excessive (8.4.1 (a) (i))
Reliability FAQ
On MOT pass rate, the Alfa romeo 1750 is the more reliable of the two — 78% pass first time versus 66%. It's one signal among several; check the full breakdown below.
Full Alfa romeo 156 report Full Alfa romeo 1750 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.