The Carrera 4S, outfitted with the PDK, accelerates from 0-60 mph in 3.2 seconds. While it may be difficult to determine exterior differences between the 2008 GranTurismo and the 2018 GranTurismo, small modifications have been implemented over the years. The 2018 model has new bumpers at each ends, making the underbody extra aerodynamically environment friendly.…