Volkswagen Passat EcoFuel squeaks past Prius as greenest car in Europe
Both the Passat and Prius scored 92 out of 100 on the test, but the less expensive natural gas fuel system gave the VW the edge. The test evaluated emissions of CO2, carbon monoxide, nitrogen oxides and hydrocarbons. The EcoFuel TSI engines are available in many of VW's European models including the Golf, Touran and others.
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