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Porsche 356 sc vs Porsche Cayenne: reliability comparison

MOT pass rates, common faults and mileage compared from real UK MOT data.

Porsche 356 sc
81%
MOT pass rate · 8 vehicles
Porsche Cayenne
84%
MOT pass rate · 40,483 vehicles
Verdict: On MOT pass rate the Porsche 356 sc (81%) and Porsche Cayenne (84%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Porsche 356 sc Porsche Cayenne
MOT pass rate 81% 84% ✓
MOT failure rate 19% 16% ✓
Faults & advisories per test 0.7 ✓ 1.2
Dangerous-fault share 0% ✓ 3%
Average mileage 43,922 mi 87,610 mi
Sample size (vehicles) 8 40,483

Most common faults

Porsche 356 sc

  1. Windscreen has damage to an area less than a 10mm circle within zone 'A' (8.3.1a)
  2. Windscreen has damage to an area less than a 40mm circle outside zone 'A' (8.3.1d)
  3. Offside Front Front wheel bearing has slight play (2.5.A.3c)
  4. Offside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a)
  5. Offside Windscreen washer provides insufficient washer liquid (8.2.3)
  6. Nearside Front Upper Steering pivot point has slight play (2.2.B.1g)

Porsche Cayenne

  1. Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
  2. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
  6. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Reliability FAQ

On MOT pass rate the Porsche 356 sc (81%) and Porsche Cayenne (84%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Porsche 356 sc report Full Porsche Cayenne 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.