The 2016 Maserati Quattroporte is available as a 4-door, 5-seat sedan. Starting at $99,900, the 2016 Maserati Quattroporte S RWD is powered by a 3.0L , 6 -cylinder engine that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway. The top of the line 2016MaseratiQuattroporteGTS RWD , priced at $ 141,500 , is powered by a 3.8L , 8 - cylinder engine that returns an EPA estimated 15-mpg in the city and 22-mpg on the highway.