The 2020 Jeep Gladiator is available as a 4-door, 5-seat regular side. Starting at $33,545, the 2020 Jeep Gladiator Sport is powered by a 3.6L, 6-cylinder engine mated to a manual transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway. The top of the line 2020 Jeep Gladiator Mojave, priced at $43,875, is powered by a 3.6L, 6-cylinder engine mated to a manual transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway.