Two SUVs with more similarities, such as the body structure, market segment, starting price, ground shadow size, and height, than differences, like the model year, horsepower, fuel economy, and maximum occupancy. First of all, the 2013 Durango has bigger and thirstier engine; the 2016 Grand Cherokee gets 4.4 more mpg. Also, you'll seat two more passengers in the Durango than in the Grand Cherokee. Among similarities are the body structure, market segment, starting price, ground shadow size, and height.