Two SUVs with some similarities, but otherwise different in most aspects such as the ground shadow size, starting price, horsepower, fuel economy, height, and maximum occupancy. First of all, there is a notable difference in the starting price of the 2016 BMW X5, which is $6,780 less than the base MSRP of the 2015 Lincoln Navigator. Also, although the 2016 X5 has a more powerful engine than the 2015 Navigator, it gets 2.3 more mpg. In addition, the X5 is both significantly smaller and slightly shorter than the Navigator. And finally, the Lincoln Navigator seats two more passengers than the BMW X5. Among similarities are the body structure and market segment.