The 2007 Maserati Spyder is available as a 2-door, 2-seat convertible. Starting at $87,252, the 2007 Maserati Spyder GT is powered by a 4.2L , 8 -cylinder engine mated to a manual transmission that returns an EPA estimated 12-mpg in the city and 17-mpg on the highway. The top of the line 2007MaseratiSpyderCambiocorsa , priced at $ 91,415 , is powered by a 4.2L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 12-mpg in the city and 17-mpg on the highway.