The 2012 Nissan Xterra is available as a 4-door, 5-seat sport utility. Starting at $25,480, the 2012 Nissan Xterra X 4x2 is powered by a 4.0L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 22-mpg on the highway. The top of the line 2012NissanXterraX (A5) 4x4 , priced at $ 27,530 , 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 20-mpg on the highway.