The 2004 BMW 3 Series marks the fourth generation ('E46') of one of BMW's most popular models. The vehicle is available in multiple trims, from the 325i Sedan to the high-performance M3 Coupe. Sedan, wagon, coupe, and convertible body styles provide a wide variety of choices. All options offer Rear-Wheel Drive (RWD) standard, with the option for All-Wheel Drive (AWD) in certain trims. Most come with a robust inline-6 engine, delivering anywhere from 184 to 333 horsepower depending on the model. In terms of safety, standard amenities consisted of antilock brakes, traction control, and stability control. BMW's optional iDrive infotainment system debuted this year, providing climate, audio, and (for the first time) navigation functions all in one place. Renowned for its sporty handling, the 2004 3 Series carries BMW's driving-focused philosophy with distinction.