Two SUVs with more similarities, such as the body structure, market segment, starting price, ground shadow size, height, and maximum occupancy, than differences, like the powertrain, horsepower, and fuel economy. First of all, the 2015 Lincoln MKX has a more powerful engine than the 2016 BMW X3 Diesel, and it gets 10 fewer miles on a gallon of fuel. Among similarities are the body structure, market segment, starting price, ground shadow size, height, and maximum occupancy.