Two SUVs with more similarities, such as the body structure, market segment, ground shadow size, height, and maximum occupancy, than differences, like the powertrain, market segment, starting price, horsepower, and fuel economy. First of all, the 2016 BMW X4 has a more powerful engine and gets 4 mpg less than the 2015 Audi Q5 Hybrid. Also, there is a $6,650 difference in the base MSRP. The 2015 Q5 Hybrid has a higher starting price than the 2016 X4. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.