It used to be that a “coupe” was a close-coupled passenger vehicle with seating for two, or maybe 2+2, the third and fourth passengers relegated to occasional status. No more, especially at BMW. Production starts next month for the anticipated September launch of the 2020 8 Series Gran Coupe line. Virtually all new from the windshield back, the 2020 8 Series coupes make the persuasive case that at BMW, you can have an exceptional level of performance and luxury with four doors, to boot.

This photo (a European-market model is depicted) shows what BMW’s concept of a Gran Coupe looks like. It’s 9.0 inches longer, 1.2 inches wider and 2.2 inches taller than the current 8 Series. Interior capacity, in terms of square feet, is likewise increased. A variety of lightweight materials are utilized in the Gran Coupe’s construction, including aluminum for the doors, hood, roof, front bulkhead, engine subframe and rear bumper support. The trunk lid is made from dent-resistant plastic, while the cabin dashboard support is made from magnesium and parts of the center driveline tunnel are made from carbon-fiber reinforced plastic. Rear-wheel and all-wheel-drive models will be offered, with a whole array of electronic driver aids that are becoming the norm in this class of vehicle. Standard power is a 3.0-liter inline-six with turbocharging and 335hp; the optional engine is a 4.4-liter V-8 with twin turbochargers that produces 523hp. The driveline is a standard eight-speed Steptronic Sport transmission. Suspension technology includes double wishbones up front with five links at the rear. When the new Gran Coupes go on sale, prices will range from $84,900 to $108,900.