The 2019 Nissan Frontier is available as a 4-door, 4-seat regular side. Starting at $19,290, the 2019 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 2019NissanFrontierPRO-4X (A5) 4x4 Crew Cab Short Box , priced at $ 34,490 , 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.