Two SUVs with some similarities, but otherwise different in most aspects such as the modifications, cargo volume, horsepower, fuel economy, ground shadow size, and height. First of all, the 2017 Mercedes-Benz G-Class AMG G 65 has a more powerful engine than the 2017 Bentley Bentayga, and it gets 3 fewer miles on a gallon of fuel. Also, comparing the dimensions we see that the 2017 Bentayga is slightly larger, although it's shorter than the 2017 G-Class AMG G 65. In addition, the Bentayga has 21.5 ft² less cargo area behind second-row seats. Among similarities are the body structure, market segment, starting price, and maximum occupancy.