The new E-Class Coup? offers a very special combination of two attributes for which the Mercedes brand is known: fascination and efficiency. With its classic coup? side aspect – no B-pillars and fully retractable side windows – the new two-door car is a particularly sporty interpretation of the E-Class's dynamic design. At the same time the most aerodynamic variant of the Coup? achieves a new world best in terms of drag coefficient: with a Cd-figure of just 0.24, this model is the world's most aerodynamically efficient series-production car.