My 1996 Astro AWD 6 cyl gets about 9.5 in the city and 13-15 on the highway. Pretty bad! It has new feet so maybe mileage will improve. You should get 20+ mpg on the high-way(50mph,80kph). If not...
If you're asking the fuel efficiency of a Dodge van, it depends on a number of factors, including the engine, wheelbase, and driving style. Shorty van with a 3.9L 3-Speed, maybe 15/19. Maxivan with a...