Hyundai didn't bring a finished version of its upcoming Sonata  Hybrid Blue Drive to the L.A. Auto Show as we thought it might, but it did bring a mockup of the hybrid system it will be using. Hyundai's proposed Blue Drive will be a parallel hybrid system utilizing lithium polymer battery power - technology that Hyundai claims will "leapfrog" currently produced nickel-metal hydride batteries by offering more than twice the energy density, 175% greater volumetric energy density, and 30% less weight. The batteries are also said to be more durable and cheaper to produce than lithium-ion batteries.
Hyundai's Blue Drive hybrid system is comprised of a 2.4L Theta II engine, six-speed automatic transmission, and a 30kW electric motor. As a full hybrid powertrain, vehicles using the system - such as the Sonata Hybrid - will be capable of running in either full gasoline, full electric, or combined modes. Start/stop technology will also be employed, while using electric power for steering and air conditioning compressor will help conserve the powertrain's energy.
The upcoming Sonata Hybrid should appeal to hybrid shoppers who can't stand the shape of the Toyota Prius or Honda Insight. With Ford claiming the 2010 Fusion Hybrid will achieve mileage at least 5 mpg better than the Toyota Camry Hybrid, Hyundai should at least match the Camry to compete with those midsize challengers as well as with the Nissan Altima Hybrid and Chevrolet Malibu Hybrid. The production version of the hybrid Hyundai will benefit from the improvements made as part of the Sonata's recent refresh.

hyundai blue drive hybrid powertrain