https://www.toyota.com/avalon/compare/avalon-vs-lacrosse -Passengers from the rear seat will be able to extend out more at the Toyota Avalon than the Buick LaCrosse, as a result of its more magnificent head- and legroom. Offering just a little more front head- and legroom than the Toyota Avalon, the Buick LaCrosse could be a little roomier and more comfortable for the driver and front-seat passengers.