Two SUVs with more similarities, such as the body structure, starting price, and maximum occupancy, than differences, like the horsepower, fuel economy, ground shadow size, and height. First of all, the 2015 Jeep Compass has bigger and thirstier engine; the 2016 Mazda CX-3 gets 5.7 more mpg. And finally, the 2015 Compass body is slightly larger than the 2016 CX-3, and in addition to that, it's also taller. Among similarities are the body structure, starting price, and maximum occupancy.