India Opens the Door to 100% Ethanol Cars With New Motor Vehicle Rules

The government has amended motor vehicle rules to allow specially designed vehicles to run on E100 fuel, containing nearly 100 per cent ethanol, marking another step in India's efforts to reduce dependence on imported crude oil and expand the use of alternative fuels.

The Ministry of Road Transport and Highways (MoRTH) notified changes to the Central Motor Vehicles Rules on Monday, October 26, revising vehicle classifications, fuel specifications and technical provisions related to emission testing.

The new rules permit flex-fuel vehicles designed and certified to operate on ethanol blends ranging from E20 to E100. However, the relaxation does not apply to conventional petrol vehicles. Cars designed for E20 petrol or regular fuel cannot use higher blends such as E85 or E100, as these require vehicles specifically engineered to handle the fuel.

The government has also increased the relevant vehicle weight threshold for light petrol and diesel vehicles from 3,000 kg to 3,500 kg under the amended provisions.

The move comes as India seeks to reduce its reliance on crude oil imports, which place considerable pressure on the country's import bill and current account balance. With the West Asia conflict highlighting the vulnerability of global energy supplies, alternative fuels have gained further importance in India's energy strategy.

India has already introduced E20 petrol, containing 20 per cent ethanol and 80 per cent petrol, across the country. Flex-fuel technology takes this effort further by allowing compatible vehicles to operate on substantially higher ethanol concentrations.

In June, Maruti Suzuki India introduced the Wagon R Flex Fuel, designed to run on ethanol-petrol blends ranging from E20 to E100. Other major manufacturers, including Toyota, Tata Motors and Hyundai, are also developing flex-fuel vehicles for the Indian market.

The amendments follow earlier proposals to expand the use of alternative fuels, including E85, E100, B100 biodiesel and hydrogen-compressed natural gas combinations.

By creating a regulatory framework for higher ethanol blends, the government aims to encourage alternative-fuel vehicle development and gradually reduce the country's dependence on imported fossil fuels.