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Porsche 911 vs Porsche 968 cabriolet a: 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 968 cabriolet a
58%
MOT pass rate · 8 vehicles
Verdict: On MOT pass rate the Porsche 911 (85%) and Porsche 968 cabriolet a (58%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Porsche 911 Porsche 968 cabriolet a
MOT pass rate 85% ✓ 58%
MOT failure rate 15% ✓ 42%
Faults & advisories per test 1.1 ✓ 2.3
Dangerous-fault share 1% 0% ✓
Average mileage 70,982 mi 60,409 mi
Sample size (vehicles) 74,656 8

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 968 cabriolet a

  1. Centre Exhaust has a minor leak of exhaust gases (7.1.2)
  2. Brake pipe slightly corroded (3.6.B.2c)
  3. Nearside Inner Front Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Inner Front Tyre tread depth below requirements of 1.6mm (4.1.E.1)
  5. rear no.plate cracked
  6. registration plate deteriorated (6.3.1d)

Reliability FAQ

On MOT pass rate the Porsche 911 (85%) and Porsche 968 cabriolet a (58%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Porsche 911 report Full Porsche 968 cabriolet a 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.