A government economic advisor has suggested reintroducing E10 fuel – petrol blended with 10% ethanol – for older vehicles currently facing restrictions. This proposal arises during ongoing debates surrounding petrol prices and fuel efficiency in India. Currently, E10 is largely restricted to newer vehicles due to potential compatibility issues with older engines. The advisor believes revisiting this policy could offer a solution to manage rising fuel costs and promote ethanol consumption. This move aims to support domestic ethanol production, benefiting farmers and reducing reliance on imported oil. However, concerns remain regarding potential engine performance impacts on older vehicle models requiring further study. The suggestion seeks to balance economic benefits with potential technical challenges.