The 2012 RAM 1500 is available as a 2-door, 3-seat regular side. Starting at $22,570, the 2012 RAM 1500 ST 4x2 Regular Cab 6.5' Box is powered by a 3.7L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 20-mpg on the highway. The top of the line 2012RAM15004x2 Regular Cab 8' Box , priced at $ 28,905 , is powered by a 5.7L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated