The 2003 Nissan 350Z is available as a 2-door, 2-seat coupe. Starting at $28,350, the 2003 Nissan 350Z Enthusiast (M6) is powered by a 3.5L , 6 -cylinder engine mated to a manual transmission that returns an EPA estimated 20-mpg in the city and 26-mpg on the highway. The top of the line 2003Nissan350ZTouring (M6) , priced at $ 33,280 , is powered by a 3.5L , 6 - cylinder engine mated to a manual transmission that returns an EPA estimated 20-mpg in the city and 26-mpg on the highway.