The 2010 Subaru Legacy is available as a 4-door, 5-seat sedan. Starting at $29,995, the 2010 Subaru Legacy 2.5GT Limited (M6) is powered by a 2.5L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 18-mpg in the city and 25-mpg on the highway. The top of the line 2010SubaruLegacy2.5i Premium (CVT) , priced at $ 21,995 , is powered by a 2.5L , 4 - cylinder engine that returns an EPA estimated 23-mpg in the city and 31-mpg on the highway.