The 2020 RAM ProMaster City is available as a 4-door, 2-seat cargo van. Starting at $24,480, the 2020 RAM ProMaster City Cargo is powered by a 2.4L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 28-mpg on the highway. The top of the line 2020 RAM ProMaster City SLT Wagon, priced at $27,730, is powered by a 2.4L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 28-mpg on the highway.