New Delhi, Oct. 26 -- The government has allowed the use of E100 ethanol fuel in vehicles specifically designed to run on flexible fuel, under amendments to the Central Motor Vehicles Rules, 1989, notified by the Ministry of Road Transport and Highways.

According to the Gazette notification, the government has included E100 alongside E85 in the emission standards prescribed for flex-fuel vehicles, paving the way for vehicles designed to operate on nearly pure ethanol.

The notification, issued under G.S.R. 911(E), states, "E85 or E100 shall be used in the vehicles designed by the original equipment manufacturers as Flex-fuel vehicles."

E100 refers to fuel containing 100 per cent ethanol, while E85 contains 85 per cent ethanol. Flex-fuel...