The 1.6 CNG ecoFLEX turbo engine in the Opel Zafira Tourer runs on natural gas, biogas or petrol!Panagiotis Karagiannis-11/01/2016-1 minutes readOpel Zafira Tourer: 4 times Environmental Compatibility Champion in its class After 2013, 2014 & 2015, the Opel Zafira Tourer is again...