2015 marks the arrival of a new generation of coupe and convertible M4s (the famous M3 name is now sedan-only). Under the bulbous hood lies a turbocharged 3.0L straight-six that offers up 425 horses and 406 lbs.-ft. of torque. M4 versions send their power to the rear wheels via a six-speed manual or seven-speed automatic. Next to the regular 428i and 435i two-doors, the 435i Gran Coupe with its sleek roofline is part of the coupe family . . . despite its four doors!