Two SUVs with some similarities, but otherwise different in most aspects such as the powertrain, starting price, horsepower, ground shadow size, height, fuel economy, and maximum occupancy. First of all, the 2015 Infiniti QX50 has a more powerful engine than the 2016 Mercedes-Benz GL-Class Diesel, and it gets 2 fewer miles on a gallon of fuel. Also, there is a notable difference in the starting price of the 2015 QX50, which is $28,600 less than the base MSRP of the 2016 GL-Class Diesel. In addition, the QX50 is both significantly smaller and shorter than the GL-Class Diesel. And then, you'll seat two more passengers in the Mercedes-Benz GL-Class Diesel than in the Infiniti QX50. Among similarities are the body structure and market segment.