16.5 barrels/yr. 495 grams/mile. 333 miles. Total Range. Page 1. Dodge. (Showing 1 to 10 of 26 vehicles) Fuel economy of the 2023 Dodge Challenger SRT Demon 170. 1984 to present Buyer's Guide to Fuel Efficient Cars and Trucks. Estimates of gas mileage, greenhouse gas emissions, safety ratings, and air pollution ratings for new and used cars and nRmVA.