The 2015 Nissan Quest is available as a 4-door, 7-seat passenger van. Starting at $26,530, the 2015 Nissan Quest S is powered by a 3.5L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 27-mpg on the highway. The top of the line 2015NissanQuestPlatinum , priced at $ 43,180 , is powered by a 3.5L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 27-mpg on the highway.