The 2014 Mercedes-Benz E-Class is available as a 4-door, 5-seat sedan. Starting at $51,900, the 2014 Mercedes-Benz E-Class E 350 RWD Sedan is powered by a 3.5L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 30-mpg on the highway. The top of the line 2014Mercedes-BenzE-ClassE 250 BlueTEC AWD 4MATIC Sedan , priced at $ 53,900 , is powered by a 2.1L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 27-mpg in the city and 42-mpg on the highway.