The 2008 Chevrolet Colorado is available as a 2-door, 3-seat regular side. Starting at $18,920, the 2008 Chevrolet Colorado LS 4x4 Regular Cab is powered by a 2.9L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 16-mpg in the city and 22-mpg on the highway. The top of the line 2008ChevroletColoradoWork Truck 4x4 Extended Cab , priced at $ 20,445 , is powered by a 2.9L , 4 - cylinder engine mated to a manual transmission that returns an EPA estimated 16-mpg in the city and 22-mpg on the highway.