The 2007 Acura TSX is available as a 4-door, 5-seat sedan. Starting at $28,090, the 2007 Acura TSX (A5) is powered by a 2.4L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 22-mpg in the city and 31-mpg on the highway. The top of the line 2007AcuraTSXWith Navigation (M6) , priced at $ 30,090 , is powered by a 2.4L , 4 - cylinder engine mated to a manual transmission that returns an EPA estimated 22-mpg in the city and 30-mpg on the highway.