The Indian government is accelerating the shift to higher ethanol fuel blends like E25 and E85 to cut oil imports, lower emissions and support energy security. But what does this transition mean for motorists, engines, fuel efficiency and running costs? Hormazd  Sorabjee - Editor, Autocar India - and Sergius Barretto - Managing Editor, Autocar India - discuss the real-world impact of the ethanol push on this episode of the Autocar Deep Drive Podcast powered by Kotak Mahindra Prime.