Two SUVs with more similarities, such as the body structure, market segment, fuel economy, height, and maximum occupancy, than differences, like the starting price, horsepower, and ground shadow size. First of all, there is a notable difference in the starting price of the 2015 Acura RDX, which is $6,805 less than the base MSRP of the 2016 Lexus RX 350. Also, the 2016 RX 350 has a more powerful engine than the 2015 RDX. And finally, the RDX is slightly smaller than the RX 350. Among similarities are the body structure, market segment, fuel economy, height, and maximum occupancy.