The 2021 Jeep Gladiator is available as a 4-door, 5-seat regular side. Starting at $34,960, the 2021 Jeep Gladiator Sport is powered by a 3.6LL , 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 2021JeepGladiatorMojave , priced at $ 45,240 , is powered by a 3.6LL , 6 - cylinder engine mated to a manual transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway.