Starting with the SXT and GT, the 3.6-liter V6 with 292 horsepower (300 in the SXT with all-wheel drive and the GT), offering adequate power and quite decent highway fuel economy for the car’s size. Review the details on the 2022 Dodge Challenger mpg ratings per trim level: 2022 Dodge Challenger SXT – 19 mpg city/30 mpg highway. 2022 Dodge Challenger GT – 19 mpg city/30 mpg highway. 2022 Dodge Challenger R/T – 15 mpg city/23 mpg highway. 2022 Dodge Challenger R/T Scat Pack – 14 mpg city/23 mpg highway. 2022 Dodge Challenger R/T The V6 gets the best fuel economy of any engine. It earns an EPA-estimated 19 mpg in the city and 30 mpg on the highway, which is about average for a muscle car. The lower-end V8s get about 15/16 mpg in the city and 25 mpg on the highway. The supercharged V8s get the worst fuel economy, at 13 mpg in the city and 22 mpg on the highway. The higher a fuel's octane rating, the greater its resistance to knock and the more power an engine might make. Dodge required 100-octane race gas (and a special ECU) to unlock the full output of Check out the full specs of the 2018 Dodge Challenger SXT, from performance and fuel economy to colors and materials. 3.6L V6 24V VVT, Transmission: 8-Speed Automatic (845RE) 2010 Dodge Challenger Personalize Find a car: 6 cyl, 3.5 L, Automatic 5-spd Compare: Fuel Economy; EPA MPG: Regular Gasoline Combined MPG: 20. combined. city/highway Fuel Economy: 7.5/10. You play, you pay. The V6-powered Challenger with all-wheel drive is rated by Natural Resources Canada (NRCan) at 12.8 L/100 km in the city; 8.7 on the highway; and 11.0 in combined driving. I came in much higher at 14.4 L/100 km. The V6 in rear-wheel-only rings in at a combined 10.3 L/100 km. We expect the new transmission to save a few tenths during the sprint to 60 mph, and it will also improve the fuel economy from 18 mpg city/27 highway to 19/30. Also helping this Challenger’s 7lI5dWU.