hi to all, my friend have same car's two difrent models 2010 @78032/km runs & 2011 @ 01375/km runs,
both have Cng, 2010 is from market 2011 ECOTEC (SIS) cng system,
we tested these car's on devils point @ khi _fuel economy, perfomence, pickup, 1rst gear ~ 3rd gear on stop watch, found 50% more power in 2011 in all parameters.
hope you people can feel during drive