India’s push toward cleaner and more domestically sourced fuel has taken another step forward, with the Central government introducing tax incentives for higher ethanol-blended petrol variants. The move comes as policymakers continue to promote ethanol blending as a strategy to reduce crude oil imports, support domestic agriculture, and lower emissions from the transport sector.
In its latest decision, the government has waived excise duty on petrol blended with 22%, 25%, 27%, and 30% ethanol, known respectively as E22, E25, E27, and E30. Under the revised structure, excise duty on these fuel variants will be nil.
The announcement comes at a time when fuel prices have been under pressure. Petrol and diesel prices have risen by a cumulative ₹7.5 per litre following the escalation of tensions in West Asia. Earlier, in March, the government had reduced excise duty on petrol and diesel by ₹10 per litre, a measure that involved foregoing more than ₹1 lakh crore in annual revenue.
Understanding the New Ethanol Fuel Categories
The naming convention of ethanol-blended fuel is based on the percentage of ethanol mixed with petrol by volume.
E22 contains 22% ethanol and 78% petrol. Similarly, E25 contains 25% ethanol, E27 contains 27%, and E30 contains 30% ethanol. The petrol component attracts applicable excise duties, while the ethanol portion is subject to central, state, Union Territory, or integrated taxes.
On 20 May, the government notified specifications for these new fuel blends. The standards were issued by the Bureau of Indian Standards (BIS), which laid down requirements for fuel produced by blending petrol with anhydrous ethanol, a form of ethanol that is free from moisture. These standards are intended for use in positive ignition engine-powered vehicles.
However, while the specifications have been notified, E22 to E30 fuels have not yet been introduced for retail sale across fuel stations.
Also Read: Mistral AI Eyes €3 Billion Raise as Europe Pushes for a Stronger Place in the Global AI Race
E20 Becomes the New Normal
At present, E20 petrol is the most widely available ethanol-blended fuel in India. The blend contains 20% ethanol and became mandatory across the country from 1 April 2026.
Before the transition to E20, E10 fuel, containing 10% ethanol, was the standard blend used for several years. The shift accelerated after NITI Aayog released its Ethanol Blending Roadmap in 2021, advancing the E20 target from 2030 to 2025.
The rollout gained momentum in 2023 when Prime Minister Narendra Modi launched E20 fuel during India Energy Week. Initially introduced at 84 fuel stations across 11 states and Union Territories, the programme gradually expanded nationwide. From April 2023 onward, all newly sold vehicles were required to be E20 compliant.
The government reported in August 2025 that oil marketing companies had achieved an average ethanol blending rate of 19.93% in July 2025, reaching the target nearly six months ahead of schedule.
Vehicle Compatibility Remains a Challenge
Despite the widespread availability of E20 fuel, a significant portion of India’s vehicle fleet is not fully compatible with higher ethanol blends.
Analysis of vehicle registration data from the Ministry of Road Transport and Highways’ Vahan dashboard shows that fewer than 30% of petrol passenger vehicles and two-wheelers registered in 2025 were ethanol compliant.
Approximately 9 lakh passenger vehicles out of 30.36 lakh registrations were compatible with ethanol-blended fuel. Among two-wheelers, around 50.2 lakh vehicles out of 13.76 crore registered units were E20 compliant.
Looking at the broader vehicle population accumulated over the last 15 years, ethanol-compatible vehicles account for only about 3% of passenger vehicles and two-wheelers currently on Indian roads, assuming older vehicles remain in operation.
Questions Around Mileage and Maintenance
Fuel efficiency remains one of the most discussed aspects of ethanol-blended petrol.
According to a survey conducted by LocalCircles involving 24,710 respondents, about half reported a decline in fuel efficiency over the previous nine months. Some participants stated that mileage had fallen by as much as 20%.
The survey also found that around one-third of car owners who purchased vehicles before 2022 experienced higher-than-usual wear and tear or repair requirements during the same period. Reported issues included problems involving engines, fuel lines, fuel tanks, and carburettors.
Even as concerns persist among some vehicle owners, the government continues to support higher ethanol blending levels as part of its long-term energy strategy.
E85 Arrives With a Lower Price Tag
The next phase of India’s ethanol programme began on 5 June when Union Petroleum and Natural Gas Minister Hardeep Singh Puri introduced E85 fuel at an Indian Oil Corporation outlet in New Delhi.
E85 contains 85% ethanol and is initially being made available at 50 fuel stations across the country. According to the minister, the fuel will be priced ₹20 lower than the current E20 blend.
The launch was accompanied by the introduction of E85-compatible vehicle variants, including select motorcycles from Hero MotoCorp and a Wagon R model from Maruti Suzuki India. These launches signal efforts to build a broader ecosystem capable of supporting higher ethanol usage.
The government is also considering policy measures aimed at encouraging hybrid-fuel vehicles. According to Puri, E85 availability is expected to expand significantly, with the fuel planned to reach as many as 500 fuel stations by the end of the year.
For consumers, the eventual pricing and benefits of E22, E25, E27, and E30 fuels will become clearer once these blends are officially rolled out through retail fuel networks across the country.
Also Read: FIFA World Cup Trophy’s Gold Value Climbs to Record $713,000 Ahead of 2026 Tournament
