New Delhi: Responding to growing criticism of the E20 ethanol blending programme, the government on Friday issued a detailed clarification dismissing what it called misinformation circulating on social media about the fuel blend's impact on vehicles, water resources and the environment.
In a 10-point statement, the Ministry of Petroleum and Natural Gas maintained that petrol blended with up to 20 per cent ethanol is supported by scientific studies, regulatory oversight and international experience, rejecting allegations that have gained traction online in recent months.
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Water, food and the ethanol story
The ministry disputed claims that producing one litre of ethanol requires 10,000 litres of water, saying ethanol is manufactured using surplus foodgrains approved after meeting national food security requirements. According to the ministry, ethanol distilleries consume about 3-5 litres of processed water per litre of ethanol and increasingly employ Zero Liquid Discharge systems to recycle water.
It also highlighted a shift in feedstock, saying maize now contributes more than 40 per cent of ethanol supplies and requires substantially less irrigation than paddy.
A defensive clarification, not an open enquiry
Seeking to counter concerns that E20 is an untested fuel, the ministry pointed to decades of ethanol blending in countries including the United States, Brazil, Canada, Thailand and Japan, as well as several European nations, though blending levels vary across jurisdictions.
On concerns over vehicle performance—one of the most common complaints raised by motorists on social media—the ministry cited Automotive Research Association of India (ARAI)-led trials involving passenger cars and two-wheelers. It said the studies found no significant impact on drivability or fuel efficiency, with only marginal changes in mileage, and added that vehicles designed for E20 could benefit from ethanol's higher octane rating.
The ministry further cited studies conducted by ARAI, Indian Oil Corporation, the Indian Institute of Petroleum and the Society of Indian Automobile Manufacturers to reject allegations that E20 damages engines or corrodes vehicle components. It acknowledged, however, that certain rubber parts in older vehicles may require earlier replacement.
Warranties, insurance and the trust gap
The government also rejected claims that the use of E20 fuel could invalidate vehicle warranties or insurance policies, saying manufacturers and insurers have clarified that vehicles approved for E20 remain covered under existing terms.
Responding to viral posts claiming insects are attracted to ethanol-blended petrol because it contains sugar, the ministry said fuel-grade ethanol contains no residual sugar after distillation and includes denaturants that repel insects.
The ministry also denied reports that it had described the E20 programme as an "experiment" before the Supreme Court, saying the proceedings related to contractual provisions governing ethanol procurement rather than the merits of the blending policy. It cited a clarification from the Office of the Attorney General in support of its position.
"We saved billions in foreign exchange"
The government also highlighted the programme's economic and environmental benefits, claiming it has saved more than Rs 1.9 lakh crore in foreign exchange, enabled payments exceeding Rs 1.6 lakh crore to farmers, reduced carbon dioxide emissions by about 930 lakh metric tonnes and displaced over 310 lakh metric tonnes of crude oil imports since 2014-15.
India achieved 20 percent ethanol blending in petrol in December 2025, ahead of its target, with blending levels rising from about 1.5 percent in 2013-14, according to the ministry.
PSUWatch's point of view over the Ethanol blending debate
While the government is confident that E20 is scientifically sound and globally validated, but the evidence it offers is internally generated, narrowly scoped, and not transparent enough to settle the dispute with millions of drivers who feel their vehicles are suffering.
Until independent, publicly accessible studies and grievance data are produced, the E20 story will remain split between official optimism and owner anger—and the truth will stay in the middle, unresolved.
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