Porsche Macan vs Porsche Speedster 356 chesil: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Porsche Macan
92%
MOT pass rate · 37,639 vehicles
Porsche Speedster 356 chesil
88%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Porsche Macan (92%) and Porsche Speedster 356 chesil (88%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Porsche Macan | Porsche Speedster 356 chesil |
|---|---|---|
| MOT pass rate | 92% ✓ | 88% |
| MOT failure rate | 8% ✓ | 12% |
| Faults & advisories per test | 0.8 | 0.4 ✓ |
| Dangerous-fault share | 4% | 0% ✓ |
| Average mileage | 50,555 mi | 18,100 mi |
| Sample size (vehicles) | 37,639 | 1 |
Most common faults
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))
Porsche Speedster 356 chesil
- Offside Stop lamp not working (1.2.1b)
- Windscreen washer provides insufficient washer liquid (8.2.3)
- registration plate fitted to the front does not have black characters on a white background (6.3.2a)
- registration plate fitted to the rear does not have black characters on a yellow background (6.3.2b)
- Nearside Front Lower Suspension arm has excessive play in a ball joint (2.4.G.2)
- Offside Front Lower Suspension arm has excessive play in a ball joint (2.4.G.2)
Reliability FAQ
On MOT pass rate the Porsche Macan (92%) and Porsche Speedster 356 chesil (88%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Porsche Macan report Full Porsche Speedster 356 chesil 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.