The 2013 Mercedes-Benz CLS-Class is available as a 4-door, 4-seat sedan. Starting at $72,000, the 2013 Mercedes-Benz CLS-Class CLS 550 Coupe RWD Sedan is powered by a 4.7L, 8-cylinder engine that returns an EPA estimated 17-mpg in the city and 25-mpg on the highway. The top of the line 2013 Mercedes-Benz CLS-Class CLS 63 AMG Coupe RWD Sedan, priced at $95,900, is powered by a 5.5L, 8-cylinder engine that returns an EPA estimated 16-mpg in the city and 25-mpg on the highway.