Another day, another award for the Prius, Green Engine of the Year

For the eighth time in the last five years, the powertrain of the Toyota Prius has been recognized by jury of the International Engine of the Year competition as one of the best. This time around Engine Technology International magazine replaced the previous best fuel economy category with Best Green Engine. The change was done to recognize the desired for both reduced fuel consumption and emissions. The Prius engine and hybrid transmission combo achieves tank-to-wheel efficiency of 34 percent compared to 14-15 percent for most internal combustion engines. The Prius has also been rated at 104g/km of CO2 on the European driving cycle. The 76hp 1.5L four cylinder combines with a 67hp electric motor/generator to achieve these results. The points spread from the 65 member jury of automotive journalists from 32 countries was actually pretty close for the top two spots with the Prius getting a narrow victory over BMW's single turbo 2.0L diesel with start/stop capability.

[Source:, via Toyota Open Road]

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