Hyundai Sonata Hybrid version 2011,
2011 Hyundai Sonata Hybrid (US) At the 2008 Los Angeles Auto Show, Hyundai unveiled the Hyundai Blue Drive powertrain for the then next generation Sonata, which uses lithium polymer battery technology. It was reported to be based on Hyundai BLUE-DRIVE concept. The 2011 Hyundai Sonata Hybrid sales began near the end of February 2011. The Sonata Hybrid drivetrain combines a 2.4-liter engine with six-speed automatic transmission, and a 30kW electric motor and lightweight lithium polymer batteries to produce a full gasoline-electric hybrid with 37 miles per US gallon (6.4 L/100 km; 44 mpg-imp) in the city and 40 miles per US gallon (5.9 L/100 km; 48 mpg-imp) on the highway. This powertrain will be shared by the 2011 Kia Optima Hybrid. The 2011 Sonata Hybrid was one of the five finalists for the 2011 Green Car of the Year awarded by the Green Car Journal in November 2010, competing with two plug-in electric vehicles, the Nissan Leaf and the Chevrolet Volt, the 2011 winner. source : wikipedia.org