Porsche Cayman vs Porsche 944: MOT reliability compared
Updated 05 September 2026.
11.2%
Porsche Cayman MOT failure rate, 16.5 pts lower than Porsche 944
Porsche Cayman is the more reliable MOT performer: 11.2% of Porsche Cayman MOTs fail versus 27.7% for Porsche 944, a 16.5 point gap.
| Metric | Porsche Cayman | Porsche 944 |
|---|---|---|
| MOT failure rate | 11.2% | 27.7% |
| Tests analysed | 188,582 | 103,392 |
| Most common failure | Lamps & electrical (23.9%) | Brakes (43.8%) |
Questions and answers
Which is more reliable, Porsche Cayman or Porsche 944?
Porsche Cayman is the more reliable MOT performer: 11.2% of Porsche Cayman MOTs fail versus 27.7% for Porsche 944, a 16.5 point gap.
What is the MOT failure rate of the Porsche Cayman?
11.2% of Porsche Cayman MOT tests result in a failure, from 188,582 tests.
What is the MOT failure rate of the Porsche 944?
27.7% of Porsche 944 MOT tests result in a failure, from 103,392 tests.