Two Sedans with some similarities, but otherwise different in most aspects such as the powertrain, modifications, horsepower, fuel economy, market segment, starting price, and ground shadow size. First of all, the 2017 Alfa Romeo Giulia Quadrifoglio has a more powerful engine than the 2017 Acura RLX Hybrid, and it gets 9 fewer miles on a gallon of fuel. Also, there is a notable difference in the starting price of the 2017 RLX Hybrid, which is $12,050 less than the base MSRP of the 2017 Giulia Quadrifoglio. In addition, the body structure of RLX Hybrid is slightly larger than that of the Giulia Quadrifoglio. Among similarities are the body structure, market segment, height, and maximum occupancy.