The 2007 Acura RDX is available as a 4-door, 5-seat sport utility. Starting at $32,995, the 2007 Acura RDX Base is powered by a 2.3L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 23-mpg on the highway. The top of the line 2007AcuraRDXw/Technology Package , priced at $ 36,495 , is powered by a 2.3L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 23-mpg on the highway.