The gas tank capacity of a Chevy Blazer varies depending on the model and the year it was produced. The tanks of earlier models are larger and able to hold 31 gallons of gas, while the later models hold about 19 gallons.
Depending on the year, Chevy Blazers typically get 11 to 17 miles per gallon or 247 to 403 miles per tank. The Chevy Blazer was one of the most popular sports utility vehicles for five decades, according to Edmunds.com. The Blazer title was put on several models of Chevy vehicles. The last of second-generation Blazers were built in 1994, after which the company rechristened them with the Tahoe name.