The Charger can be more efficient than it looks–especially if you get the eight-speed automatic with the V-6–which earns up to 31-mpg on the highway.
Go with any of the V-8 models and you'd better be prepared to dig deeper into your wallet. Even though HEMI V-8-powered R/T models include Fuel Saver Technology (cylinder deactivation), they return 16/25 mpg, with AWD models down to 15/23. SRT models figure in at 14/23 mpg--which really isn't bad considering their output. And if you're getting an SRT, gas mileage can't possibly be a priority; that model gets 14/23 mpg.
Rear-wheel-drive V-6 models slot in at 19 mpg city, 31 highway--very respectable for a large, performance-oriented sedan. While with all-wheel drive, the V-6 lands at 18/27 mpg.