The 2008 Dodge Grand Caravan is available as a 4-door, 2-seat cargo van. Starting at $22,520, the 2008 Dodge Grand Caravan SE Passenger is powered by a 3.3L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 24-mpg on the highway. The top of the line 2008 Dodge Grand Caravan Cargo, priced at $21,880, is powered by a 3.3L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 24-mpg on the highway.