E20 petrol may cut mileage by up to 5% but offers cleaner combustion, energy security benefits: Ministry
The Indian Oil Ministry has defended the nationwide rollout of E20 ethanol-blended petrol, acknowledging a minor 3-5% reduction in fuel efficiency while highlighting benefits like cleaner emissions and energy security. The Ministry cited extensive testing and manufacturer feedback to dismiss concerns regarding engine damage in older vehicles.
Why it matters
As India pushes for energy independence and lower carbon emissions, the transition to E20 fuel is a critical component of national energy policy that impacts millions of vehicle owners.
Petrol blended with 20% ethanol (E20) can reduce fuel economy by 3-5% in some vehicles, the Oil Ministry said on Friday (July 10, 2026), but argued the impact is outweighed by benefits, including a higher octane rating, superior anti-knock characteristics, faster combustion, better pickup, smoother acceleration, cleaner engine operation, and lower lifecycle carbon emissions.
In a detailed question-and-answer document issued to counter criticism of the Ethanol Blended Petrol Programme, the Ministry of Petroleum and Natural Gas said E20 was a "cleaner, higher-quality and more efficient fuel" than E10 or pure petrol and had been rolled out only after years of scientific testing, consultations with automobile manufacturers and the expansion of domestic ethanol production.
The Ministry rejected concerns that the programme had been implemented too quickly, saying India's ethanol blending initiative dates back to pilot projects launched in 2001, with 5% blending introduced in parts of the country by 2006.
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