The 2008 Cadillac Escalade is available as a 4-door, 7-seat sport utility. Starting at $55,990, the 2008 Cadillac Escalade Base 4x2 is powered by a 6.2L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 12-mpg in the city and 19-mpg on the highway. The top of the line 2008CadillacEscaladePlatinum Edition AWD , priced at $ 79,095 , is powered by a 6.2L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 12-mpg in the city and 18-mpg on the highway.