The 2015 Toyota Avalon XLS has an average fuel economy of about 21 miles per gallon (mpg) in the city and 31 mpg on the highway. Assuming a combined average of around 25 mpg, driving 450 miles would use approximately 18 gallons of gas. This can vary based on driving conditions and individual driving habits.
Copyright © 2026 eLLeNow.com All Rights Reserved.