There are four trim levels for the Cayman: base; S, GTS and GT4. All are powered by horizontally opposed 6-cylinder engines. In the base Cayman, it's a 2.7L unit making 275 horsepower and 213 pound-feet of torque. The Cayman S and GTS both feature a 3.4L; in the S the engine produces 325 horsepower and 273 pound-feet, while in the GTS it makes 340 horsepower and 280 pound-feet. The GT4 uses an even bigger flat-6 engine, this time displacing 3.8L and making 385 horsepower. Due to the Cayman's light weight, fuel economy is quite good, scoring an EPA estimated highway rating of 30 mpg, with the Cayman S not far behind at 28 mpg. The GTS is only slightly further back at 26 mpg. The Cayman can be equipped with either a 6-speed manual or 7-speed PDK dual-clutch automatic transmission.
Standard items include 18-inch wheels, a 7-inch color touch-screen, partial leather seating surfaces, a programmable garage door opener and power-adjustable seats.
Short of engine, wheel and brake size, equipment differences between the Cayman, Cayman S, and GTS are relatively minor. GTS models, for example, include the Sport Chrono package that tweaks engine response, along with Porsche Active Suspension Management (PASM) as standard equipment, but they can be optioned on the other models. Beyond PASM and Sport Chrono, performance options include ceramic brakes, active body mounts, and torque vectoring between the two rear wheels.
Convenience options include a premium Bose sound system with a 6-disc CD changer, nicer seats, a fully leather clad interior, a 2-zone climate control system, Bluetooth connectivity, a navigation system and parking assist.
Despite being a fast, small and lightweight sports car, Porsche has put serious consideration into the safety systems on the Cayman. The anti-lock brakes work well, but the system is even more effective when attached to the Cayman's massive 4-piston calipers grabbing cross-drilled rotors. Stability control and traction control are both standard but can be switched off. Two-stage front airbags are aided by side and knee airbags to help minimize injury if an accident should occur.