What is the gas mileage like in a 97 Chevy Astro van?

The gas mileage of a 1997 Chevy Astro van is notoriously poor. You're looking at around 13-18 miles per gallon (mpg), combined city and highway driving. Actual mileage will vary significantly depending on driving style, engine size (4.3L V6 was most common), vehicle condition, and load. Expect lower mpg if you frequently drive in city traffic or carry heavy loads.