2.0L Turbo ECOTEC® DOHC 4-cylinder engine (high-output on GS)

The 2.0L ECOTEC® turbo-charged engine1 in the 2013 Regal has been designed with power and efficiency in mind. Regal Turbo delivers 220 hp2 and 260 lb-ft of torque3 with EPA-estimated 29 automatic/32 manual mpg highway. Regal GS delivers 270 hp4 and 295 lb-ft of torque5 with EPA-estimated 29 automatic/27 manual mpg highway. Simultaneously, technology controls the operation of this expertly crafted power plant. A direct-injection system pushes fuel into the combustion chamber to maximize efficiency, creating better horsepower and performance while maintaining low emissions levels. Each time you press the accelerator, you will feel the exhilaration and excitement that is the Buick Regal.

1 When running on E85, Regal offers an EPA-estimated 13 city/20 highway mpg. E85 FlexFuel capability is not available in CA,CT,MA,MD,ME,NJ,NY,OR,PA,RI,VT and WA. E85 is a combination of 85% ethanol and 15% gasoline. Go to www.afdc.energy.gov/afdc/fuels/ to see if there is an E85 fuel station near you. E85 is not available on Regal GS.
2 220 hp @ 5300 RPM.  Based on an official SAE certification. 
3 260 lb-ft @ 2000 RPM. Based on an official SAE certification.
4 270 hp @ 5300 RPM.  Based on an official SAE certification. 
5 295 lb-ft @ 2400 RPM. Based on an official SAE certification.