Performance data and technical specs are based on the model from 2005.
Acceleration (0-100 km/h): 5.5 sec.
Topspeed (mph): 171
Acceleration (0-60 mph): 5.5 sec.
Cylinders: B6
Displacement: 3387 ccm (3.4 l)
Engine Power: 291 hp (217 kw)
Gears: Manual, 6-speed
Weight: 1415kg (3120 lbs)
Weight/Power ratio: 4.86 kg/hp
Power/Displacement ratio: 85.92 hp/l
Metric performance data, Porsche Cayman S compared with similar cars:
| Porsche Cayman S | Artega GT | Jaguar XK | Nissan 350Z 35th Anniversary Edition | |
| Topspeed (km/h): | 275 | 270 | 250 | 250 |
| Acceleration (0-100 km/h): | 5.5 | 6.2 | 5.8 | |
| Power: | 291 hp (217 kw) | 296 hp (221 kw) | 294 hp (219 kw) | 296 hp (221 kw) |
| Weight (kg): | 1415 | 1100 | 1595 | 1525 |
English performance data, Porsche Cayman S compared with similar cars:
| Porsche Cayman S | Artega GT | Jaguar XK | Nissan 350Z 35th Anniversary Edition | |
| Topspeed (mph): | 171 | 168 | 155 | 155 |
| Acceleration (0-60 mph): | 5.5 | 6.2 | 5.8 | |
| Power: | 291 hp (217 kw) | 296 hp (221 kw) | 294 hp (219 kw) | 296 hp (221 kw) |
| Weight (lbs): | 3120 | 2426 | 3517 | 3363 |
