Gadkari clarifies E-20 vehicle impact
Key Highlights
- Government is conducting scientific testing of E-25 petrol.
- No timeline has been set for its commercial rollout.
- E-25 will be introduced only after complete safety and engine validation.
- E-20 petrol remains the current nationwide standard.
- SIAM, ARAI and Indian Oil conducted studies on E-20 fuel.
- No major engine damage found in cars and two-wheelers using E-20.
- Older BS-III vehicles may experience performance-related impacts.
- Government says scientific approval will precede any future fuel upgrade.
The Centre has confirmed that it is currently testing E-25 petrol but has ruled out any immediate plans for its commercial launch until extensive scientific evaluations and safety assessments are completed.
The clarification comes amid growing public debate over ethanol-blended fuels, particularly E-20 petrol, which is now widely available across fuel stations in India. E-25 petrol contains 25% ethanol and 75% petrol, compared to the existing E-20 blend comprising 20% ethanol and 80% petrol.
According to information shared by the Ministry of Information and Broadcasting, the government is proceeding cautiously with the development of E-25 fuel. Officials said the higher ethanol blend will only be introduced after detailed verification of engine compatibility, fuel system performance, emission standards and vehicle safety through scientific testing.
The government stressed that there is no urgency to launch E-25 and that implementation will take place only after obtaining approval from automobile manufacturers, research agencies and scientific experts.
Addressing concerns over ethanol-blended fuel in the Rajya Sabha, Union Road Transport and Highways Minister Nitin Gadkari referred to a joint study conducted by the Indian Oil Corporation (IOC), the Society of Indian Automobile Manufacturers (SIAM) and the Automotive Research Association of India (ARAI).
The study found that E-20 petrol does not require major modifications in the engines of most modern cars and two-wheelers. It also concluded that the fuel did not cause noticeable engine damage or mechanical failures during testing.
However, Gadkari acknowledged that certain older BS-III compliant vehicles could experience some impact while operating on E-20 fuel, whereas newer vehicle models designed to accommodate ethanol-blended fuels are expected to function normally.
The government’s clarification comes amid complaints from some vehicle owners who have reported reduced fuel efficiency and concerns over engine performance after switching to E-20 petrol. Authorities maintain that scientific evidence does not indicate widespread damage to compatible vehicles and that further improvements in fuel standards will be implemented only after rigorous testing.
India’s ethanol blending programme is part of a broader strategy to reduce crude oil imports, strengthen energy security, lower carbon emissions and support domestic sugarcane and biofuel industries. As research on higher ethanol blends continues, the government says consumer safety and vehicle compatibility will remain its top priorities before any nationwide rollout of E-25 petrol.
