I manage a fleet of vehicles for a state owned university. I keep track of all mileage and fuel usage for all my fleet. Most of my road fleet ends up being comprised of Dodge vehicles because they are usually the cheapest bids on the state contract.
For the year of 2004: These are overall averages based on number of miles driven in the year divided by total fuel usage.
1994-2000 Dodge B3500 Maxivans, 5.9L, get between 12.7 and 15.1 mpg with the 2000 models doing the best at 14.9 to 15.1 mpg.1999 Dodge Caravans, 3.0L, get about 22.2 mpg.
2004 Dodge Intrepid Police, 3.5L HO, get about 24 to 25 mpg.1999 Dodge Dakotas, 3.9L autos, get about 14.7 mpg.(good considering they are delivery trucks)
1999 Dodge D1500 1/2 ton, 5.9L autos, get about 7.9 to 8.1 mpg.(these hardly ever see any highway driving, mostly around campus and short trips across town for building materials or parts)Most of our work involves changing oil and filters, rotating and replacing tires and brake jobs.
The older Dodge's had that ECM that was prone to burn up the Alt Field circuit but they have fixed that problem now.