Two Sedans with more similarities, such as the body structure, market segment, ground shadow size, height, and maximum occupancy, than differences, like the powertrain, fuel economy, starting price, and horsepower. First of all, the 2018 Honda Clarity Plug-in Hybrid has a more powerful engine than the 2018 Buick LaCrosse Hybrid, but it gets 13 more miles on a gallon of fuel. Also, the 2018 LaCrosse Hybrid is priced $3,835 lower compared to the base MSRP of the 2018 Clarity Plug-in Hybrid. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.