888-377-7193 The 2012 Dodge Challenger SXT is powered by a 3.6-liter V6 that produces 305 hp and 268 pound-feet of torque. A five-speed automatic is standard. EPA fuel economy estimates stand at 18 mpg city27 mpg highway and 21 mpg combined. The Challenger RT gets a 5.7-liter V8 that when paired with the standard six-speed manual transmission cranks out 376 hp and 410 lb-ft. When hooked up to the available five-speed automatic, output is 372 hp and 400 lb-ft. In testing, a manual-equipped Challenger RT went from zero to 60 mph in 5.5 seconds; the automatic raises that to 5.8 seconds. Fuel mileage estimates are 162519 for the automatic with the manual getting about 1 mpg less .