August 21 , 2025
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- India fast-tracked E20 petrol (20% ethanol blend) nationwide, aiming for economic benefits and reduced emissions.
- Ethanol, mainly from sugarcane and grains, boosts farmer incomes and saves foreign exchange (Rs 43,000 crore estimated in 2025).
- E20 reduces carbon emissions by up to 30% compared to E10; higher octane improves combustion and reduces engine knocking.
- Fuel efficiency may drop 5-7% in modern cars; older vehicles (BS3/BS4) may see drops up to 20%.
- Ethanol can damage rubber seals and parts in non-compatible vehicles, but replacement costs are low.
- Newer cars (BS6 Phase 2, post-April 2023 models) are mostly E20-ready.
- Regular maintenance and use of ethanol-compatible parts are recommended during transition.
- Authorities call E20 a “bridge fuel” towards cleaner electric mobility.
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