Images of the 2015 BMW M3 and M4 have leaked – courtesy of Autocar UK. The M3 and M4 are, essentially, the same vehicle, with the M3 being a coupe and the M4 being a sedan. Both will sport the new M engine – the S55 B30. This is a 3.0-liter twin-turbocharged in-line six-cylinder engine that produces 425 horsepower and 405 pound-feet of torque. Top speed is 155 mph.
The M3 and M4 will be offered with a six-speed manual transmission or a seven-speed M DCT dual-clutch transmission.