The 2018 Acura RDX is available as a 4-door, 5-seat sport utility. Starting at $37,500, the 2018 Acura RDX Base AWD is powered by a 3.5L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 27-mpg on the highway. The top of the line 2018 Acura RDX Advance Package FWD, priced at $42,700, is powered by a 3.5L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 28-mpg on the highway.