The 4 has grown in other ways, too. It’s 5.2 inches longer, an inch wider, and 0.4 inches taller than its predecessor. Standard LED headlights with U-shaped DRLs flank the grille, while slimmer taillights have LED elements that bring the coupe in line with other modern BMWs.
Compared with the exterior, the cabin is a study in restraint and simplicity. A leather sport steering wheel and redesigned sports seats are standard. As before, the 4 Series can accommodate four; and five at a pinch. The start/stop button has relocated to the center console, and there is a new gear selector. M Sport models gain extras like soft knee padding on the console sides, special door sill plates, and an M Sport steering wheel. BMW’s 12.3-inch Live Cockpit Professional is optional.