The 2011 Acura ZDX is available as a 4-door, 5-seat sport utility. Starting at $46,020, the 2011 Acura ZDX 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 23-mpg on the highway. The top of the line 2011AcuraZDXw/Advance Package , priced at $ 56,570 , is powered by a 3.7L , 6 - cylinder engine that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway.