* Engine size: The Astro van came with various engine options (e.g., 4.3L V6). A larger engine generally gets worse gas mileage.
* Transmission: Automatic or manual transmissions affect fuel economy.
* Driving conditions: City driving yields significantly lower mileage than highway driving. Things like terrain, weather, and driving style also play a large role.
* Vehicle condition: Proper maintenance (tuned engine, properly inflated tires, etc.) improves fuel efficiency.
* Tank size: While generally around 20-26 gallons depending on trim and options, the exact tank size needs to be verified for a specific van.
Without knowing the specific engine and transmission, and assuming average driving conditions, a reasonable *estimate* might be anywhere from 150 to 300 miles on a full tank. However, this is a very broad range. To get a more accurate figure, you'd need to consult the owner's manual for the *specific* 1995 Astro van or look up fuel economy data based on its engine type and transmission. Even then, real-world results can vary significantly.
