These two Maserati Quattroporte models are two variations of the same model with one major difference, the modifications. First of all, there is a notable difference in the starting price of the 2016 Maserati Quattroporte, which is $41,600 less than the base MSRP of the 2016 Maserati Quattroporte GTS. Also, the 2016 Quattroporte GTS has bigger and thirstier engine; the 2016 Quattroporte gets 1 more mpg. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.