Two Sedans with more similarities, such as the body structure, market segment, starting price, height, and maximum occupancy, than differences, like the horsepower, fuel economy, and ground shadow size. First of all, the 2015 Kia K900 has a more powerful engine than the 2016 Lexus GS 350, and it gets 4.5 fewer miles on a gallon of fuel. And finally, the 2015 K900 is slightly larger than the 2016 GS 350. Among similarities are the body structure, market segment, starting price, height, and maximum occupancy.