The 2014 Nissan Frontier is a 4-door, 4-seat Regular Side, available in 28 trims, ranging from the S (M5) 4x2 King Cab to the SL 4x4 Crew Cab Long Box. Upon introduction, the $17,990 S (M5) 4x2 King Cab is equipped with a standard 2.5L, 4-cylinder, engine that achieves 19-mpg in the city and 23-mpg on the highway. A Manual transmission is standard. The $34,410 SL 4x4 Crew Cab Long Box is equipped with a standard 4.0L, 6-cylinder, engine that achieves 15-mpg in the city and 21-mpg on the highway. An Automatic transmission is standard.