India, Dec. 3 -- The Union government on Wednesday told the parliament that vehicles have not shown any significant variations in vehicle performance or adverse impact on components from using 20% ethanol blended petrol.

The government said this is based on an August 2025 response by the ministry of petroleum and natural gas, which administers the Ethanol Blending Programme, even though vehicles sold prior to 1st April 2023 were only compliant with E10 (10% blended fuel) .

The ministry of petroleum's response was based on studies conducted by Indian Oil Corporation Limited (IOCL), Society of Indian Automobile Manufacturers (SIAM) and Automotive Research Association of India (ARAI).

The response on Wednesday came after Trinamool Congres...