The 2010 Acura TSX is available as a 4-door, 5-seat sedan. Starting at $29,310, the 2010 Acura TSX 2.4 (A5) is powered by a 2.4L , 4 -cylinder engine that returns an EPA estimated 21-mpg in the city and 30-mpg on the highway. The top of the line 2010AcuraTSX3.5 w/Technology Pkg (A5) , priced at $ 37,950 , is powered by a 3.5L , 6 - cylinder engine that returns an EPA estimated 18-mpg in the city and 27-mpg on the highway.