India's road transport ministry has amended the Central Motor Vehicle Rules to permit flex-fuel vehicles capable of running on E100, a fuel made with almost pure ethanol. The approval applies only to vehicles specifically designed and certified for high-ethanol fuel.
The change does not cover ordinary vehicles. Cars approved for E20 or conventional fuel cannot use E85 or E100, according to a senior ministry official cited by PTI. This means the new rule creates a separate category for compatible vehicles rather than changing the fuel requirements for all petrol cars.
What the amended rules change
The Ministry of Road Transport and Highways has revised technical references used in vehicle classifications, fuel specifications, emissions tables and testing requirements. The changes also raise the weight limit for covered light petrol and diesel vehicles from 3,000 kg to 3,500 kg.
E20 contains 20% ethanol and 80% petrol. The approved range for specially developed flex-fuel vehicles extends from E20 to E100. E85 contains 85% ethanol and 15% petrol, while E100 refers to fuel made with almost 100% ethanol.
The distinction is important for vehicle owners. A vehicle that can operate on regular petrol or E20 is not automatically suitable for higher ethanol blends. Only models that have been designed and certified for those fuels fall within the permission.
Vehicle industry and government strategy
Maruti Suzuki India introduced the Wagon R Flex Fuel in June as India's first flex-fuel passenger vehicle. The model can operate on ethanol-petrol blends ranging from E20 to E100.
Toyota Motor Corporation, Tata Motors and Hyundai Motor Company are also developing flex-fuel vehicles for the Indian market. Their work comes as policymakers promote higher ethanol blending and seek to reduce dependence on imported crude oil.
The government has already introduced E20 fuel as part of this strategy. The policy aims to reduce reliance on imported crude oil, which the report identifies as a major factor contributing to the country's current account deficit.
Flex-fuel vehicles are built to handle blends such as E85 and E100, unlike conventional petrol vehicles approved only for lower ethanol mixtures. The ministry had earlier proposed changes to vehicle emissions rules to expand the use of higher ethanol blends and alternative fuels.
Those proposed changes also addressed a wider framework for vehicles using E85, E100, B100 biodiesel and hydrogen-CNG combinations. The stated aim was to create a route for flex-fuel and fully biofuel-powered vehicles across different vehicle categories.
What this means for drivers
The approval does not mean that every vehicle can now use E100. Drivers must follow the fuel compatibility and certification applicable to their specific vehicle. Existing cars designed for E20 or regular fuel remain outside the permission for E85 and E100.
The rule change instead supports the development and certification of vehicles built for higher ethanol content. It also gives manufacturers a regulatory framework for bringing more such models to the Indian market.
Conclusion
The amended rules permit E100 use only in specially designed and certified flex-fuel vehicles. Regular vehicles approved for E20 or conventional fuel cannot use E85 or E100.
Frequently Asked Questions
Q. What has the road transport ministry approved?
The ministry has amended the Central Motor Vehicle Rules to permit flex-fuel vehicles that can run on fuel ranging from E20 to E100.
Q. Can all petrol vehicles use E100?
No. E100 is permitted only for vehicles specifically designed and certified for high-ethanol fuel.
Q. Can an E20 vehicle use E85 or E100?
No. Vehicles approved for E20 or conventional fuel cannot use E85 or E100.
Q. What is E85?
E85 contains 85% ethanol and 15% petrol.
Q. What is E100?
E100 refers to fuel made with almost 100% ethanol.
Q. Which flex-fuel passenger vehicle was introduced in India?
Maruti Suzuki India introduced the Wagon R Flex Fuel in June. It can run on blends ranging from E20 to E100.
Q. Which other companies are developing flex-fuel vehicles?
Toyota Motor Corporation, Tata Motors and Hyundai Motor Company are developing flex-fuel vehicles for the Indian market.
Q. Why is the government promoting ethanol blending?
The strategy aims to reduce dependence on imported crude oil, which contributes significantly to the country's current account deficit.
