The 2007 Toyota Avalon is available as a 4-door, 5-seat sedan. Starting at $34,065, the 2007 Toyota Avalon Limited is powered by a 3.5LL , 6 -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 2007ToyotaAvalonXLS , priced at $ 31,325 , is powered by a 3.5LL , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 22-mpg in the city and 31-mpg on the highway.