2016 Mazda CX-9 is the newer version with some differences, such as the model year, horsepower, and fuel economy.. First of all, the is 2 model years newer than the . And finally, the 2014 CX-9 has a more powerful engine and gets 5 mpg less than the 2016 CX-9. Among similarities are the body structure, starting price, ground shadow size, height, and maximum occupancy.