The 2011 Acura MDX is available as a 4-door, 7-seat sport utility. Starting at $42,930, the 2011 Acura MDX Base is powered by a 3.7L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 21-mpg on the highway. The top of the line 2011 Acura MDX Advance Pkg w/Entertainment Pkg, priced at $54,455, is powered by a 3.7L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 21-mpg on the highway.