The 2010 Porsche Panamera is available as a 4-door, 4-seat hatchback. Starting at $89,800, the 2010 Porsche Panamera RWD is powered by a 4.8L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 24-mpg on the highway. The top of the line 2010PorschePanameraTurbo AWD , priced at $ 132,600 , is powered by a 4.8L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 23-mpg on the highway.