The standard engine in the Rebel is a 3.6-liter Pentastar V-6 engine that makes 310 horsepower, 269 pound-feet of torque. It is capable of getting 25 mpg on the highway. The optional V-8 engine is a 5.7-liter HEMI that produces 395 horsepower and 410 pound-feet of torque. It is rated at 15 mpg in the city, 21 mpg on the highway.