Porsche 356b vs Porsche Macan: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Porsche 356b
85%
MOT pass rate · 59 vehicles
Porsche Macan
92%
MOT pass rate · 37,639 vehicles
More reliable
Verdict: On MOT pass rate, the Porsche Macan is the more reliable of the two — 92% pass first time versus 85%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Porsche 356b | Porsche Macan |
|---|---|---|
| MOT pass rate | 85% | 92% ✓ |
| MOT failure rate | 15% | 8% ✓ |
| Faults & advisories per test | 0.8 | 0.8 |
| Dangerous-fault share | 0% ✓ | 4% |
| Average mileage | 54,960 mi | 50,555 mi |
| Sample size (vehicles) | 59 | 37,639 |
Most common faults
Porsche 356b
- Nearside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a)
- Offside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a)
- Nearside Stop lamp not working (1.2.1b)
- Offside Stop lamp not working (1.2.1b)
- Windscreen washer provides insufficient washer liquid (8.2.3)
- Parking brake: efficiency below requirements (3.7.B.7)
Porsche Macan
- Offside Rear 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))
- Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
Reliability FAQ
On MOT pass rate, the Porsche Macan is the more reliable of the two — 92% pass first time versus 85%. It's one signal among several; check the full breakdown below.
Full Porsche 356b report Full Porsche Macan 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.