The Optima’s parallel hybrid powetrain makes use of a modified 2.4-liter Theta II engine without direct-injection that runs on the Atkinson cycle and delivers 166HP and 151 lb-ft of peak torque. The four-cylinder gasoline unit is linked to a 6-speed automatic transmission and an electric motor capable of delivering 40.2 horsepower (30 kW) and 151.2 pound-feet of torque when electric only. When in hybrid mode, the combined output of the two motors comes to 206.2 horsepower and 195.4 pound-feet of torque. A set of lithium polymer batteries from LG Chem completes the hybrid package.
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