The 2015 Nissan Xterra is available as a 4-door, 5-seat sport utility. Starting at $23,660, the 2015 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 2015 Nissan Xterra PRO-4X (A5) 4x4, priced at $31,640, 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.