The government has acknowledged that car owners using E20 petrol in vehicles originally designed for E10 fuel could see a decline in fuel efficiency, while reiterating that the impact is significantly lower than what many have clamied on social media.
In a written reply in the Lok Sabha on July 30, the Ministry of Road Transport and Highways said studies conducted by the Automotive Research Association of India (ARAI), the Society of Indian Automobile Manufacturers (SIAM) and Indian Oil Corporation found that fuel efficiency in BS-III, BS-IV and BS-VI vehicles designed for E10 petrol could decline by 2-6% when these vehicles are operated on E20 fuel.
