New Delhi, Dec. 4 -- The Centre on Wednesday told Parliament that vehicles have not shown any significant variations in performance or adverse impact on components from using 20% ethanol-blended petrol. The Centre said this is based on an August 2025 response by the ministry of petroleum and natural gas, which administers the Ethanol Blending Program, even though vehicles sold prior to April 1, 2023, were only compliant with E10 (10% blended fuel). The ministry of petroleum's response was based on studies conducted by the Indian Oil Corporation Limited (IOCL), Society of Indian Automobile Manufacturers (SIAM) and Automotive Research Association of India (ARAI). The response on Wednesday came after TMC Rajya Sabha MP Derek O' Brien asked Uni...