The 2008 Mercedes-Benz E-Class is available as a 4-door, 5-seat sedan. Starting at $52,200, the 2008 Mercedes-Benz E-Class E 320 BLUETEC RWD Sedan is powered by a 3.0L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 23-mpg in the city and 32-mpg on the highway. The top of the line 2008Mercedes-BenzE-ClassE 550 AWD 4MATIC Sedan , priced at $ 61,200 , is powered by a 5.5L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 13-mpg in the city and 19-mpg on the highway.