Chrysler 300 engine choices:
'6.1-liter SRT HEMI® V8 engine with 425 horsepower and 420 lb-ft of torque
Chrysler 300C SRT8 is the most powerful vehicle for under $45,000.*
5.7-liter HEMI® V8 engine with Multiple-Displacement System (MDS), 340 horsepower at 5,000 rpm, and 390 lb-ft of torque, standard on 300C—the most horsepower and torque in its class.† MDS allows the engine to operate on four cylinders when power demands are minimal, increasing fuel efficiency by up to 20 percent. This provides the power of a V8 with the economy of a large V6. (EPA estimated mpg: 17 city/ 25 highway)
3.5-liter high-output V6 SOHC engine with 250 horsepower at 6,400 rpm and 250 lb-ft of torque, standard on 300 Touring and 300 Limited. (EPA estimated mpg: 18 city/ 28 highway)
2.7-liter DOHC 24-valve multipoint fuel injection V6 engine with 190 horsepower at 6,400 rpm and 190 lb-ft of torque, standard on the 300 (EPA estimated mpg: 21 city/ 28 highway) '