The BMW M4 convertible has arrived. This model is the latest addition to BMW’s line of M performance vehicles boasting a 425 horsepower twin-turbo inline six-cylinder engine. In a mission to shave weight, many of the M4’s components are made of carbon fiber. The interior on this vehicle is absolutely stunning sporting a candy red leather package with carbon fiber accents. Other notable items include the head-up display, built-in navigation, bluetooth, heated steering wheel, rear view camera, keyless access and start, and parking-assist. This new M4 model just sounds better than the other BMW M class models from the past.