How many Miles per gallon of gas does a 2003 Chevy astro use?

The fuel economy of a 2003 Chevy Astro van varies significantly depending on the engine (4.3L V6 or 4.3L V6 with FlexFuel) and driving conditions (city vs. highway). You won't find a single definitive answer.

However, you can expect EPA estimates to be in the range of 13-19 mpg combined (city and highway driving). City driving will generally yield lower mpg than highway driving. Actual mileage will likely be lower, especially with older vehicles and less-than-ideal maintenance.