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Porsche Cayenne vs Porsche Coupe: reliability comparison

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

Porsche Cayenne
84%
MOT pass rate · 40,483 vehicles
More reliable
Porsche Coupe
80%
MOT pass rate · 58 vehicles
Verdict: On MOT pass rate, the Porsche Cayenne is the more reliable of the two — 84% pass first time versus 80%. It's one signal among several; check the full breakdown below.

Head to head

Measure Porsche Cayenne Porsche Coupe
MOT pass rate 84% ✓ 80%
MOT failure rate 16% ✓ 20%
Faults & advisories per test 1.2 ✓ 1.4
Dangerous-fault share 3% 0% ✓
Average mileage 87,610 mi 79,357 mi
Sample size (vehicles) 40,483 58

Most common faults

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))

Porsche Coupe

  1. Oil leak, but not excessive (8.4.1 (a) (i))
  2. Oil leak
  3. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  4. Nearside Stop lamp not working (1.2.1b)
  5. Windscreen washer provides insufficient washer liquid (8.2.3)
  6. Offside Front wheel bearing has slight play (2.5.A.3c)

Reliability FAQ

On MOT pass rate, the Porsche Cayenne is the more reliable of the two — 84% pass first time versus 80%. It's one signal among several; check the full breakdown below.

Full Porsche Cayenne report Full Porsche Coupe 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.