The 2009 2010 BMW M3 is a 2- or 4-door, up to 5-passenger luxury sports coupe, convertible sports car, or luxury sports sedan, available in 3 trims, ranging from the Sedan to the Convertible. Upon introduction, the Sedan is equipped with a standard 4.0-liter, V8, 414-horsepower engine that achieves 14-mpg in the city and 20-mpg on the highway. The Convertible is equipped with a standard 4.0-liter, V8, 414-horsepower engine that achieves 13-mpg in the city and 20-mpg on the highway. A 6-speed manual transmission with overdrive is standard on both trims, and a 7-speed manual transmission is optional. 
