Price wise, you’ll pay more for the 4 Series Gran Coupe than the 3 Series saloon. That’s justified by the car’s extra style as well as its additional kit; even the SE has all-round parking sensors, heated leather seats, DAB, xenons and a multifunction steering wheel. Sport adds styling tweaks and 18in rims among other things, while plushness and variety of cabin trims and materials improve as you move up through the ranks. Luxury and M Sport bring the superb BMW Professional Media pack and metallic paint. The top M Sport has stiffer suspension (which can be removed at no cost), plus an aerodynamic bodykit.