Unique yet instantly recognizable. See how the design of the 911 Targa evolved from the first to the eighth generation. #TimelessMachine __ 911 Targa 4: Fuel consumption combined: 9,8 l/100 km; CO2 emissions: 223 g/km. 911 Targa 4S: Fuel consumption combined 10,3 – 9,9 l/100 km; CO2 emissions combined 235 – 227 g/km.