What we have here are two SUVs from Acura with some differences, such as the model year, starting price, horsepower, and maximum occupancy. First of all, the 2016 Acura RDX is priced $6,920 lower compared to the base MSRP of the 2014 Acura MDX, which is older by two model years. Also, the 2016 RDX produces fewer horsepower than the 2014 MDX. And finally, the MDX seats two more passengers than the RDX. Among similarities are the body structure, market segment, fuel economy, and height.