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Porsche 911 targa tiptronic s vs Porsche Cayenne: reliability comparison

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

Porsche 911 targa tiptronic s
85%
MOT pass rate · 69 vehicles
Porsche Cayenne
84%
MOT pass rate · 40,483 vehicles
Verdict: On MOT pass rate the Porsche 911 targa tiptronic s (85%) 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 911 targa tiptronic s Porsche Cayenne
MOT pass rate 85% ✓ 84%
MOT failure rate 15% ✓ 16%
Faults & advisories per test 0.9 ✓ 1.2
Dangerous-fault share 0% ✓ 3%
Average mileage 70,085 mi 87,610 mi
Sample size (vehicles) 69 40,483

Most common faults

Porsche 911 targa tiptronic s

  1. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Oil leak, but not excessive (8.4.1 (a) (i))
  3. Oil leak
  4. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  5. Nearside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  6. Offside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

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 911 targa tiptronic s (85%) and Porsche Cayenne (84%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Porsche 911 targa tiptronic s 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.