The 2017 Buick LaCrosse is available as a 4-door, 5-seat sedan. Starting at $32,065, the 2017 Buick LaCrosse Base FWD is powered by a 3.6L, 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 2017 Buick LaCrosse AWD, priced at $43,265, is powered by a 3.6L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 29-mpg on the highway.