Amid growing concerns and social media claims about ethanol-blended petrol (E20), the Ministry of Petroleum and Natural Gas has issued a detailed clarification addressing misinformation surrounding the Ethanol Blended Petrol Programme.
The ministry said claims that E20 fuel damages engines, deteriorates rubber components, causes rust or is unsafe for older vehicles are not supported by scientific evidence. It added that E20 has undergone extensive testing and validation before being introduced and advised consumers not to rely on unverified information.
The ministry said India's transition to E20 has been a planned and phased process spanning over two decades, rather than a sudden policy change.
The government highlighted that:
India's ethanol blending programme began with pilot projects in 2001.
The E5 programme was rolled out across several states by 2006.
The ethanol blending policy was notified in the Gazette of India in 2013.
The National Policy on Biofuels launched in 2018 expanded ethanol production capacity.
Oil Marketing Companies invited investments in dedicated ethanol plants in 2021.
The roadmap for E20 was prepared after consultations with automobile manufacturers, testing agencies, and other stakeholders.
According to the ministry, every stage of the programme involved scientific assessment and stakeholder consultation before implementation.
The ministry said there is no evidence to support claims that E20 petrol damages engines, rubber hoses, fuel tanks or vehicle components.
Before rolling out E20, the government said the fuel underwent extensive testing covering:
Engine durability
Fuel system compatibility
Material compatibility
Corrosion resistance
Vehicle performance
Emissions
Drivability
The ministry added that E20 has also been validated through extensive real-world usage.
According to the clarification, Maruti Suzuki serviced nearly 2.5 crore vehicles, including around 1.5 crore older vehicles that were not originally certified as E20-compatible, without reporting widespread E20-related corrosion, rubber deterioration or abnormal engine damage. The ministry also noted that Hero MotoCorp has reported similar field experience.
The government clarified that many vehicle manuals mentioning "E10 compatible" only reflect the fuel specification that existed when those vehicles were certified.
It said this does not automatically mean such vehicles become unsafe when fuel standards are upgraded after scientific testing, engineering validation, and regulatory approval.
According to the ministry, automobile manufacturers were involved throughout the transition from E10 to E20 and have continued to honour vehicle warranties following the rollout.
Read More: Government Rejects Misleading Claims on E20 Fuel, Says Ethanol Blending Is Scientifically Validated
The ministry acknowledged that some vehicles may experience a 3% to 5% reduction in fuel economy with E20.
However, it said mileage is only one aspect of vehicle performance.
According to the government, E20 also offers:
Higher octane rating
Better anti-knock characteristics
Faster combustion
Improved pickup
Smoother acceleration
Cleaner engine operation
Lower particulate emissions
Around 40% reduction in lifecycle carbon emissions
The ministry said operating separate nationwide supply chains for pure petrol, E10 and E20 would create significant logistical and operational challenges.
It noted that India has more than 1 lakh fuel retail outlets, supported by a vast network of refineries, depots, terminals and pipelines. Maintaining multiple grades of petrol nationwide would increase handling costs, complicate inventory management, and reduce supply chain efficiency.
The government also pointed out that substantial investments have already been made in ethanol production infrastructure, including dedicated ethanol plants, storage facilities, and logistics.
The ministry said ethanol blending is aimed at reducing India's dependence on imported crude oil while supporting farmers and improving energy security.
According to the government, the Ethanol Blended Petrol Programme has so far:
Saved over ₹1.97 lakh crore in foreign exchange.
Replaced nearly 316 lakh metric tonnes of crude oil.
Reduced around 952 lakh metric tonnes of carbon dioxide emissions.
Transferred over ₹1.66 lakh crore directly to Indian farmers.
The ministry added that nearly 20% of every litre of petrol sold today consists of domestically produced ethanol, helping reduce India's exposure to fluctuations in global crude oil prices.
The government said ethanol blending has helped cushion Indian consumers from sharp increases in global fuel prices.
According to the data shared by the ministry, fuel price increases in India over recent years have remained lower than those witnessed in several neighbouring countries and major global economies despite international crude oil volatility.
The Ministry of Petroleum and Natural Gas has reiterated that E20 is a scientifically tested and validated fuel. It said concerns regarding engine damage, rubber deterioration, corrosion and fuel system failure are not supported by evidence from laboratory testing, field validation or real-world vehicle servicing. The ministry has advised consumers to rely on official information and avoid misinformation circulating on social media.
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Published on: Jul 10, 2026, 12:34 PM IST
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