The 911 Carrera 4S is a 2-door, 4-passenger luxury sports car, or convertible sports car, available in 4 trims, ranging from the Coupe to the 4S Cabriolet. Upon introduction, the 4S Cabriolet is equipped with a standard 3.8-liter, H6, 385-horsepower engine that achieves 18-mpg in the city and 25-mpg on the highway. We have the Carrera 4S with a 7-speed automatic transmission with overdrive.