The 2001 Porsche 911 is available as a 2-door, 4-seat coupe. Starting at $111,000, the 2001 Porsche 911 Turbo AWD Coupe is powered by a 3.6L , 6 -cylinder engine mated to a manual transmission that returns an EPA estimated 15-mpg in the city and 22-mpg on the highway. The top of the line 2001Porsche911RWD Cabriolet , priced at $ 76,000 , is powered by a 3.4L , 6 - cylinder engine mated to a manual transmission that returns an EPA estimated 17-mpg in the city and 25-mpg on the highway.