Mercedes-Benz calls the CLS-Class a coupe, but it's actually a 4-door sedan that is considerably curvier than most sedans. It occupies a segment that also includes the Audi A7 and Porsche Panamera.

The CLS-Class isn't a large car and the word "sedan" doesn't seem to fit the smallish car with four doors, so Mercedes-Benz calls it a four-door coupe. A new computer-controlled seven-speed automatic ...