The 2017 Maserati Quattroporte is available as a 4-door, 5-seat sedan. Starting at $103,400, the 2017 Maserati Quattroporte S RWD is powered by a 3.0L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway. The top of the line 2017MaseratiQuattroporteGranSport AWD , priced at $ 116,000 , is powered by a 3.0L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway.