2019 Mercedes-Benz A-Class Sedan teased

Mercedes-Benz has teased the 2019 A-Class Sedan, confirming its credentials as a seriously slippery customer. According to the company, its upcoming three-box A-Class will be the most aerodynamically efficient car in the world with a 0.22 coefficient of drag (Cd), down on the (already-impressive) 0.25Cd offered by the hatchback. Mercedes-Benz is crediting an extensive period of development using computer-aided simulations, and plenty of time in the Sindelfingen wind tunnel.