(Driver): Rollover: Early release (manufactured before 2 July 2010) version of model year 2011: Overall Frontal Rating: Frontal Rating (Driver): Frontal Rating (Passenger): Side Overall Rating (Front): Side Overall Rating (Rear): Side Barrier Rating (Front): Side Barrier Rating (Rear): Side Pole Rating (Driver): Rollover: Australasian NCAP – The Hyundai Sonata scored the highest possible rating of 5 stars Korean NCAP – The Hyundai Sonata scored the highest possible ratings across the frontal, offset and side crash tests China NCAP – The Hyundai Sonata scored the highest possible rating of 6 stars Sonata Hybrid 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 in the U.S. began near the end of February 2011. The Sonata Hybrid drivetrain combines a 2.4-liter engine with six-speed automatic transmission, and a 30 kW electric motor and lightweight lithium polymer batteries to produce a full gasoline-electric hybrid with in the city and on the highway. This powertrain is shared with the 2011 Kia Optima Hybrid; and 2013 Sonata Hybrid. Overview The 2013 Sonata Hybrid has noticeable improvements and has ranked 3rd out of 20 Affordable Midsize Cars (based on U.S. News' analysis of 19 published reviews and test drives as well as their analysis of reliability and safety data). The 2013 hybrid has a long warranty and a spacious, high-quality interior. Its base price ranges from $26,445–$31,324 and weights 3450–3550 pounds. As a hybrid, it emits 0.51 pounds of per mile and has an EPA fuel economy ratings of 36/40 mpg city/highway. Cumulative sales of the Sonata Hybrid in the U.S. reached 7,906 units through July 2011, representing 20 percent of Sonata sales at the time, according to Hyundai. The Sonata Hybrid was the number two selling hybrid since June, outsold only by the Prius. Considering cumulative sales in the U.S. market through December 2011, with 19,672 units sold, the Sonata Hybrid and the Kia Optima Hybrid together ranked second in hybrid sales for calendar year 2011, after the Toyota Prius, and surpassed the Honda Insight in September. Specifications It comes with a 35 kW electric motor (up from 30) and a lithium-polymer battery that is 38 percent larger and more energy dense. The newer electric motor can run up to , meaning