The best green engine trophy, went to the General Motors Voltec powertrain, which mixes a 1.4-liter range-extender gas engine, two AC electric motors, and a 288-cell lithium-ion battery pack. The powertrain, which sits under the hood of the Chevrolet Volt and Opel Ampera, as well as the forthcoming Cadillac ELR, took the trophy that even IEoY judges admit usually goes to Toyota and its Hybrid Synergy Drive system. More on the awards at Ford EcoBoost, Chevrolet Voltec Win Big at International Engine of the Year - Rumor Central International Engine of the Year Awards 2012 And International Engine Of The Year Winners Named
