Being priced higher than the Cayman GTS, the GT4 is the flagship model of the 981c codenamed second generation Porsche Cayman. Designed as a track-ready car, the GT4 uses several components derived from the larger Porsche 911 series such as the engine and front suspension.
You might think of the Cayman GT4 as the little brother to the 911 GT3. However, it is in many ways its equal, albeit in a smaller and different package. The GT4’s engine is based on that of a Carrera S, but it is mounted ahead of the rear axle. To do so, the 3.8-liter flat-six was rotated 180 degrees, and in doing so the GT4’s driving characteristics are distinctive of a mid-engine design. Moving that weight forward delivers more predictable handling and improved balance. You may consider the Cayman GT4 entry-level, but what you are entering is the highest level of driving exhilaration. Put the GT4 through its paces and you will immediately become a fan.
In comparison with the Cayman GTS, the GT4 weighs only 10 lb (5 kg) less but features improved handling characteristics due to wider tyres and being fitted with the front suspension from the 911 GT3, as well as a fixed rear wing. Powered by the GT4's 3.8 litre flat-six engine from the 911 Carrera S and producing 385 hp (287 kW) and 310 ft·lb (420 N·m) of torque, the Cayman GT4 is only available with a six-speed manual transmission, marking the last time a Porsche Cayman model is sold with a naturally aspirated flat-6 engine and a six-speed manual transmission, a combination that would disappear with the 718 Cayman's turbocharged flat-four engine.
The Porsche Cayman GT4's performance follows in the footsteps of its subordinate, the Cayman GTS, but with improved performance. Having a more powerful, higher-displacement engine, the Cayman GT4's acceleration has been increased, taking only 9 seconds in a run to 100 mph (161 km/h), as well as having a higher top speed of 196 mph (315 km/h). Using a fixed rear wing, the Cayman GT4 handles and brakes considerably better than the Cayman GTS. These performance stats make the Cayman GT4 the fastest European Sports Car in Forza Horizon 3.