Porsche 911 vs Porsche 944: MOT reliability compared
Updated 05 September 2026.
14.6%
Porsche 911 MOT failure rate, 13.1 pts lower than Porsche 944
Porsche 911 is the more reliable MOT performer: 14.6% of Porsche 911 MOTs fail versus 27.7% for Porsche 944, a 13.1 point gap.
| Metric | Porsche 911 | Porsche 944 |
|---|---|---|
| MOT failure rate | 14.6% | 27.7% |
| Tests analysed | 1,015,318 | 103,392 |
| Most common failure | Lamps & electrical (32.2%) | Brakes (43.8%) |
Questions and answers
Which is more reliable, Porsche 911 or Porsche 944?
Porsche 911 is the more reliable MOT performer: 14.6% of Porsche 911 MOTs fail versus 27.7% for Porsche 944, a 13.1 point gap.
What is the MOT failure rate of the Porsche 911?
14.6% of Porsche 911 MOT tests result in a failure, from 1,015,318 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.