The BMW 1 series Coupé appears in its proportions agile, sporting and compact. The overall appearance of the exterior design exudes a challenging dynamism of the surfaces and muscular wheel arches. The long, frameless door accentuates that dynamism by shifting the perceived center of the side towards the rear. Most prominent feature of the side is the protruding shoulder line. The light and airy, trapezoidal greenhouse stands straight atop of the side panel. The horizontal orientation of the emphasized compact rear underlines the sturdy stance and the wide track of the car.