2008 BMW M3

The first M3 produced 192 hp from its 2.3-liter four-cylinder engine during its 1988-1991 model year run. A legend was born and Americans embraced the high-rpm, naturally-aspirated M concept. The next generation arrived in 1995 with a 3.0-liter (and later, 3.2-liter) 240-hp inline-six powerplant. In 1997 the first M3 Sedan joined the family and the first M3 Convertible followed shortly thereafter. The most-recent version, available as either a coupe or convertible from 2001-2006, again was offered with six-cylinder power, this time providing 333 hp from its 3.2 liters. This vehicle was BMW�s first use of SMG (Sequential Manual Gearbox) for the US market.
The move to eight cylinders in the fourth generation BMW M3 provides a powerplant offering the seemingly disparate characteristics of more power, increased efficiency and reduced weight when compared with the previous six-cylinder M3 engine. Displacing 3,999 cubic centimeters (4.0 liters), the new light-alloy engine produces 414 hp at 8,300 rpm and 295 pound-feet of torque at 3,900 rpm with 85 percent of the maximum torque available consistently through 6,500 rpm. This power output represents a 15-percent increase over the six-cylinder from the last generation M3 and it comes with an eight-percent fuel-economy improvement when compared to its predecessor. Compression ratio is dialed in to 12.0:1 and redline is set at 8,400 rpm.