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Porsche 911 vs Porsche Ctr ruf: reliability comparison

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

Porsche 911
85%
MOT pass rate · 74,656 vehicles
Porsche Ctr ruf
67%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Porsche 911 (85%) and Porsche Ctr ruf (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Porsche 911 Porsche Ctr ruf
MOT pass rate 85% ✓ 67%
MOT failure rate 15% ✓ 33%
Faults & advisories per test 1.1 ✓ 1.7
Dangerous-fault share 1% 0% ✓
Average mileage 70,982 mi 108,888 mi
Sample size (vehicles) 74,656 1

Most common faults

Porsche 911

  1. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  3. Under-trays fitted obscuring some underside components
  4. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  5. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Oil leak, but not excessive (8.4.1 (a) (i))

Porsche Ctr ruf

  1. Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))
  2. Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b))
  3. Nearside Headlamp aim projected beam image is obviously incorrect LHD kick up (4.1.2 (c))
  4. Offside Headlamp aim projected beam image is obviously incorrect LHD kick up (4.1.2 (c))
  5. Windscreen washer not working (3.5 (a))

Reliability FAQ

On MOT pass rate the Porsche 911 (85%) and Porsche Ctr ruf (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Porsche 911 report Full Porsche Ctr ruf 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.