The 2019 Porsche 911 is available as a 2-door, 4-seat coupe. Starting at $187,500, the 2019 Porsche 911 GT3 RS RWD Coupe is powered by a 4.0L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 19-mpg on the highway. The top of the line 2019Porsche911Speedster RWD Cabriolet , priced at $ 274,500 , is powered by a 4.0L , 6 - cylinder engine mated to a manual transmission that returns an EPA estimated 14-mpg in the city and 19-mpg on the highway.