Two Sedans with more similarities, such as the body structure, market segment, ground shadow size, height, and maximum occupancy, than differences, like the starting price, horsepower, and fuel economy. First of all, there is a $9,700 difference in the base MSRP. The 2015 Acura RLX has a higher starting price than the 2016 Hyundai Genesis. And finally, the 2016 Genesis has a more powerful engine than the 2015 RLX, and it gets 4.4 fewer miles on a gallon of fuel. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.