The 2015 Toyota Avalon is available as a 4-door, 5-seat sedan. Starting at $32,285, the 2015 Toyota Avalon XLE is powered by a 3.5L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 31-mpg on the highway. The top of the line 2015 Toyota Avalon Limited, priced at $39,980, is powered by a 3.5L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 31-mpg on the highway.