The 2018 Toyota Sienna is available as a 4-door, 7-seat passenger van. Starting at $30,850, the 2018 Toyota Sienna L 7 FWD is powered by a 3.5L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 27-mpg on the highway. The top of the line 2018 Toyota Sienna Limited Premium AWD, priced at $48,715, is powered by a 3.5L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 24-mpg on the highway.