The 2004 Acura TSX is available as a 4-door, 5-seat sedan. Starting at $26,490, the 2004 Acura TSX (M6) is powered by a 2.4L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 21-mpg in the city and 29-mpg on the highway. The top of the line 2004AcuraTSXWith Navigation (A5) , priced at $ 28,490 , 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.