The 2021 Subaru Legacy is available as a 4-door, 5-seat sedan. Starting at $22,895, the 2021 Subaru Legacy Base is powered by a 2.5LL , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 27-mpg in the city and 35-mpg on the highway. The top of the line 2021SubaruLegacyTouring XT , priced at $ 36,145 , is powered by a 2.4LL , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 24-mpg in the city and 32-mpg on the highway.