* Cayenne: 3.6L naturally aspirated V6 (300 hp)
* Cayenne S: 3.6L turbocharged V6 (400 hp)
* Cayenne GTS: 4.8L naturally aspirated V8 (420 hp)
* Cayenne Turbo: 4.8L twin-turbocharged V8 (500 hp)
* Cayenne Diesel: 3.0L turbocharged V6 (240 hp)
To know the exact engine size, you'll need to specify which 2013 Porsche Cayenne model you're interested in.