The 2006 Toyota Avalon is available as a 4-door, 5-seat sedan. Starting at $33,965, the 2006 Toyota Avalon Limited is powered by a 3.5L, 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 2006 Toyota Avalon XLS, priced at $31,225, is powered by a 3.5L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 22-mpg in the city and 31-mpg on the highway.