The concept of the so-called four-door coupé remains a contradiction in terms. You don't need to be a car buff to know that coupés have two doors, and sedans have four.
The Audi A7 Sportback competes in an increasingly crowded four-door coupé space, but while it's the sleek fastback's design that usually turns heads, you'll find the latest A7's centrepiece under the bonnet.
You can blame Mercedes-Benz for establishing the modern four-door coupé segment. It launched the first-generation CLS way back in 2004, and changed the face of premium motoring forever.
Perhaps the prestigious marque wanted to add some lustre to the somewhat mundane W112 E-class that the CLS was based on. More likely, it saw an opportunity to combine coupé-like exclusivity with four-door ease of use in a unique package.
The result wasn't pretty, thanks in part to a droopy rear and a banana-curved waistline, but it proved popular enough to establish a brand-new genre.
Today, Merc is already on its second-generation CLS, while both BMW and Audi have entered the fray - BMW with its 6-Series Gran Coupé, and the Audi A7 Sportback. Even Volkswagen has a representative in the form of the Passat CC....