The Modi government’s July 4, 2026 press briefing on E20 fuel was a textbook case of damage control, where senior officials from the petroleum ministry, auto industry representatives and oil marketing companies took turns dismissing consumer concerns as “rage bait,” while touting the programme’s macroeconomic benefits. It was a public relations event aimed strictly at the media and retail consumers, which warranted the presence of auto executives telling people their car engines are fine. But the 90-minute session, staged amid nationwide complaints and a Supreme Court hearing where the government reportedly called E20 an “experiment” – a claim it now denies – left several massive logistical and economic elephants in the room. While the officials heavily pushed the narrative that the nationwide rollout of E20 is a seamless win-win, it is a more problematic story with several questions on pricing, safety protocols, regulatory consistency and consumer compensation conspicuously overlooked.Here are the critical questions that remain unanswered or inadequately addressed by the official statements so far.If E20 is safe for E10 and E0 vehicles, why are separate E20-certified vehicles being manufactured and mandated?The government and auto industry representatives at the presser claimed that E20 is safe for pre-2023 E10-compatible vehicles, citing Maruti Suzuki’s servicing of 15 million older cars without fuel-related issues. However, this contradicts the regulatory framework that requires all vehicles manufactured after April 2023 to be E20-certified standards, with separate material compatibility and engine tuning specifications. If E20 were truly safe for all existing vehicles without modification, there would be no need for a distinct certification regime, new material standards, or manufacturer retooling. The coexistence of E20-safe claims for old vehicles alongside mandatory E20 certification for new ones suggests either regulatory overreach or incomplete safety assurance for pre-2023 vehicles.The reality is that ethanol is corrosive to older rubber seals, plastic components, and fuel lines. While an older E10 car won’t break down immediately, E20 accelerates wear and tear over time. Furthermore, NITI Aayog’s own data admits that E10-designed vehicles suffer a 1-2% drop in fuel efficiency when running on E20 – with real-world users reporting much higher losses.If ethanol is cheaper than petrol (Rs 58–72/litre versus Rs 102–115/litre), why is E20 not priced lower than regular petrol?Ethanol procurement prices for OMCs range from Rs 57.97/litre (C-heavy molasses) to Rs 71.86/litre (maize-based), while retail petrol in Delhi sells at approximately Rs 102/litre. Despite ethanol being 20–40% cheaper per litre and constituting 20% of E20 fuel, there has been no corresponding price reduction at the pump. The Modi government has not explained the pricing formula that prevents cost pass-through to consumers. Oil minister Hardeep Singh Puri recently noted that E85 would be Rs 20/litre cheaper than E20 due to lower calorific value, implicitly acknowledging that ethanol content affects pricing. But E20 remains priced similarly to E10 despite its ethanol blend.The unaddressed issue is energy density. Ethanol contains about 30% less energy per litre than pure petrol. When you blend 20% ethanol into the mix, the fuel economy of the vehicle drops. In mature flex-fuel markets like Brazil, high-ethanol fuels are heavily subsidised to ensure they cost significantly less than pure petrol, offsetting the mileage loss. In India, the consumer absorbs the loss in mileage while paying the same price, allowing the Oil Marketing Companies and the government to pocket the savings from reduced crude oil imports.If agriculture subsidies, imported fertilisers and water-intensive crops are being used to produce ethanol, how is the programme saving money for the economy or consumers?Ethanol production relies on water- and fertiliser-intensive crops like sugarcane, rice and maize, most of which benefit from government subsidies on power, water and fertilisers and imported inputs such as urea and DAP. The government has not provided a comprehensive cost-benefit analysis that accounts for subsidies on feedstock crops, ethanol procurement price guarantees and EBP programme administration; water diverted from food production, land use changes, and potential food price inflation; and fertiliser imports used for ethanol feedstock cultivation.The ethanol programme is essentially shifting the cost from the crude oil import bill to the agricultural subsidy ledger. It is heavily reliant on water-guzzling crops. Producing one litre of ethanol from sugarcane requires about 3,000 litres of water, while producing it from rice requires over 10,000 litres of water. When you factor in the free or subsidised electricity used to pump that groundwater, the subsidised fertilisers used to grow those crops, and the Minimum Support Price paid to procure them, the true cost of ethanol is massive. Without factoring in these hidden costs, claims of foreign exchange savings from reduced crude imports may be overstated. India is also effectively exporting its rapidly depleting groundwater into its fuel tanks to claim a victory on energy security. The Modi government has not disclosed whether a full lifecycle economic assessment, including agricultural subsidies and environmental externalities, has been conducted and what its findings are.Given ethanol’s hygroscopic nature, what special measures have OMCs implemented to prevent water contamination in E20 fuel during storage and transportation?Ethanol readily absorbs moisture from the atmosphere, which can lead to phase separation (the water and ethanol separate from the petrol and sink to the bottom), microbial growth and engine corrosion. This highly corrosive mixture can rust fuel tanks and destroy injectors. In fact, this storage and moisture risk is the exact reason Bhutan officially rejected E20 fuel from Indian OMCs. 1/2Since people have tagged me to this tweet, please find the written response by the Department of Trade of the Bhutanese Govt confirming to me an offer was made by Indian OMCs & the Department requested the OMCs to supply normal petrol.My verbal interviews confirmed it too. https://t.co/X2AMVOIieC pic.twitter.com/DVBy8WvPcm— Tenzing Lamsang (@TenzingLamsang) July 5, 2026The PIB clarification dismissed viral claims about E20 attracting insects and causing rusting but did not detail the specific infrastructure upgrades, quality control protocols or monitoring systems that OMCs have deployed to mitigate water contamination risks across India’s 90,000 fuel stations. Standard fuel contamination prevention measures are well-documented internationally, yet the government has not disclosed whether Indian OMCs have implemented enhanced protocols for E20’s higher hygroscopic risk compared to E10 or E0 fuel.Why was the NITI Aayog’s 2021 ethanol blending advisory referenced in court proceedings subsequently removed or made inaccessible?During Supreme Court hearings on E20, petitioners cited a 2021 NITI Aayog report, Roadmap for Ethanol Blending in India 2020–25, that projected 6-7% fuel efficiency reduction in cars and 3-4% in motorcycles at E20 blending levels. NITI Aayog explicitly recommended that the Ministry of Petroleum notify a plan for the continued availability of E10 fuel for older vehicles. The Ministry of Petroleum later referenced NITI Aayog’s life-cycle emissions study to support E20’s environmental benefits. However, multiple reports indicate that the original advisory or related pages have been taken down or are no longer publicly accessible, raising transparency concerns. The government has not explained why this foundational policy document was removed, whether its projections were revised, or if subsequent data validated or contradicted its efficiency loss estimates.What compensation or recourse is available to consumers experiencing reduced mileage and increased maintenance costs due to E20?Multiple surveys indicate that 55–66% of pre-2023 vehicle owners report over 10% decline in fuel efficiency and increased wear-and-tear since E20’s rollout. While the Modi government dismisses these as “wild claims” and “rage bait,” it has not addressed whether consumers can claim compensation for demonstrable mileage losses; if insurance policies remain valid for E20-related engine damage (despite PIB assurances, no specific guidance has been issued); and why E0/E10 fuel is no longer available at most pumps, effectively removing consumer choice.The Supreme Court rejected petitions seeking ethanol-free fuel options, citing national interest and farmer benefits, but this does not resolve the individual consumer’s economic burden. The Modi government has not explained why citizens should bear the cost of a policy whose claimed macroeconomic benefits of reduced imports and saved foreign exchange are public goods, while the microeconomic costs like lower mileage and higher maintenance are privatised.