The 2013 Nissan Frontier is available as a 4-door, 4-seat regular side. Starting at $17,990, the 2013 Nissan Frontier S (M5) 4x2 King Cab is powered by a 2.5L, 4-cylinder engine mated to a manual transmission that returns an EPA estimated 19-mpg in the city and 23-mpg on the highway. The top of the line 2013 Nissan Frontier SL 4x4 Crew Cab Long Box, priced at $33,790, 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 21-mpg on the highway.