Two Sedans with some similarities, but otherwise different in most aspects such as the model year, powertrain, fuel economy, market segment, starting price, and horsepower. First of all, the 2016 Acura RLX Hybrid is priced $13,650 lower compared to the base MSRP of the 2013 BMW 7 Series, which is older by three model years. Also, the 2013 7 Series has bigger and thirstier engine; the 2016 RLX Hybrid gets 11.4 more mpg. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.