The 2008 Nissan Xterra is available as a 4-door, 5-seat sport utility. Starting at $27,260, the 2008 Nissan Xterra Off Road (M6) 4x4 is powered by a 4.0L, 6-cylinder engine mated to a manual transmission that returns an EPA estimated 16-mpg in the city and 20-mpg on the highway. The top of the line 2008 Nissan Xterra Off Road (A5) 4x4, priced at $28,260, is powered by a 4.0L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 20-mpg on the highway.