The 2007 Toyota Prius is available as a 5-door, 5-seat sedan. Starting at $22,175, the 2007 Toyota Prius Base is powered by a 1.5L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 60-mpg in the city and 51-mpg on the highway. The top of the line 2007ToyotaPriusTouring , priced at $ 23,070 , is powered by a 1.5L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 60-mpg in the city and 51-mpg on the highway.