New Delhi, Sept. 8 -- The Indian government's nationwide rollout of ethanol-blended petrol, known as E20, has triggered concern among vehicle owners in the world's third-largest auto market.

E20, which contains 20 per cent ethanol mixed with petrol, was first introduced at select stations in April 2023 and expanded nationwide in April 2025.

It replaces the earlier E10 blend (10 per cent ethanol), which most cars and two-wheelers were originally designed to run on.

With older blends like E5 and E10 being phased out, consumers now have no option but to use E20.

The government argues that the switch will cut oil imports by USD 5 billion this year and add nearly USD 4.6 billion to farmers' incomes, as ethanol is produced mainly fr0m sugar...