E20 ethanol-blended petrol affects mileage, claims 2021 Niti Aayog report

The automobile industry and the government have admitted that ethanol-blended petrol (E20) can cause a decrease in mileage in the range 2%-6%. Niti Aayog in its 2021 report on ‘Roadmap For Ethanol Blending in India 2020-25 had recommended that “for better acceptability of higher ethanol blends in the country, retail price of such fuels should be lower than normal petrol." The report had said that while using E20 fuel, there would be a drop in fuel efficiency by nearly 6%-7% for four-wheelers and 3%-4% for two-wheelers designed for E0.