In 2000, BMW redefined its super sports coupe, the M3 by placing a 3.2-liter DOHC inline-6 under its hood. Based on the E46 3 Series that underwent a full model change in 1998, the new M3 pumped out a fierce 338 HP at 7900 rpm and a hearty 269.0 lb-ft of torque at 4900. This meant that this amazing machine achieved more than 99 HP per liter when the six cylinder spun to its 7900-rpm redline. What really brought the motor to life was the M3’s new gearbox. Initially, it came equipped with a Getrag 6-speed manual, but later BMW added the SMG II, the company’s prize two-pedal (twin clutch) semi automatic transmission.