India Updates Emission Standards to Include 100% Ethanol Fuel
The Central Government has amended the Central Motor Vehicles Rules, 1989, to include provisions for vehicles running on 100 per cent ethanol (E100) fuel, expanding the regulatory framework for ethanol-powered flex-fuel vehicles. The amendments came into effect on Monday, according to a notification issued by the Ministry of Road Transport and Highways.
Under the revised rules, several references to E85 fuel in emission standards and testing requirements have been replaced with “E85 or E100”, formally extending the provisions to vehicles designed to operate on higher ethanol blends, including pure ethanol.
However, the government has clarified that E85 or E100 fuel can be used only in flex-fuel vehicles specifically designed by original equipment manufacturers (OEMs). This restriction ensures that such fuels are used in vehicles engineered to meet the relevant technical and emission requirements.
Changes to Vehicle Emission and Fuel Standards
The amendments also revise certain vehicle classifications and technical requirements. In one emission-related table, the gross vehicle weight threshold has been increased from 3,000 kg to 3,500 kg.
Other changes include updated references to hydrogen-compressed natural gas (HCNG), petrol blended with up to 20 per cent ethanol (E20), and biodiesel standards. The notification also incorporates technical corrections to emission-testing tables and related notes.
The revised framework is part of India’s broader efforts to expand the use of alternative fuels and promote ethanol blending in the transport sector.
Ethanol Fuel Could Reduce Running Costs
Earlier this year, Union Road Transport and Highways Minister Nitin Gadkari said that operating a car entirely on ethanol could bring fuel costs down to the equivalent of approximately ₹25 per litre. The actual cost to consumers would depend on fuel prices, vehicle efficiency and local market conditions.
Gadkari has also highlighted the adoption of ethanol as an alternative automotive fuel, stating that ethanol is being used in 19 countries and that no complaints had been received from vehicle users in India, according to his remarks.
India’s Ethanol Demand May Rise Under E25 Blending
Meanwhile, a report by Brickwork Ratings has projected that India’s ethanol demand could reach 17.9 billion litres by the financial year 2030-31 under an E25 blending scenario in its base case.
The report noted that India’s installed ethanol distillation capacity currently stands at 18.25 billion litres, which is sufficient to meet projected demand under its base and bear scenarios.
Under the base-case projection, capacity utilisation could reach approximately 98 per cent. If ethanol blending remains at E20, demand could stand at 14.3 billion litres under the bear scenario, implying capacity utilisation of around 78 per cent.
The latest amendments to the motor vehicle rules could support the wider regulatory adoption of ethanol-based fuels. However, the growth of the sector will also depend on vehicle compatibility, fuel availability, production capacity and the economics of ethanol blending.
