To the best of my knowledge, Currently GNFC vinati organic make methanol out of Natural gas & Or Coal and there is carbon emissions involved. Further both natural gas and coal are non renewable form of energy.
But there is a way , if Bio gas is used to produce methanol , then it can be a promising renewable fuel. But Bio gas production is still at a nascent stage Thermax very recently got a order for bio gas … Logistic and distribution of Bio gas need to be established
otherwise , Methanol ethanol are well established as Automobile fuel.
You may please read the post below if you have not gone through
.