Two Sedans with more similarities, such as the body structure, market segment, starting price, ground shadow size, height, and maximum occupancy, than differences, like the market segment, horsepower, and fuel economy. First of all, the 2015 BMW ALPINA B7 has bigger and thirstier engine; the 2016 Lexus LS 600h L gets 1 more mpg. Among similarities are the body structure, market segment, starting price, ground shadow size, height, and maximum occupancy.