# Government Approves E100 Pure Ethanol Fuel, Standard Cars Restricted From Using It > The Ministry of Road Transport and Highways has notified amendments to Central Motor Vehicles Rules, paving the way for 100 percent ethanol and E85 flex-fuel vehicles. However, ordinary cars running on standard petrol cannot use these high-blend fuels. **Type:** article · **Category:** Auto · **Published:** 2026-10-27 · **Source:** TrendKia **Canonical:** https://trendkia.com/en/auto/government-approves-e100-pure-ethanol-fuel-standard-cars-restricted-from-using-it-52171 · **Language:** English **Tags:** Ethanol Fuel, Flex Fuel Vehicles, Road Transport Ministry, Vehicle Rules, Alternative Energy In a significant shift toward alternative energy, the Ministry of Road Transport and Highways has notified amendments to the central motor vehicle rules on Monday, clearing the path for flex-fuel vehicles capable of running on 100 percent ethanol and E100 fuel. Flex-fuel automobiles are engineered to handle high-level ethanol blends including E85, which contains 85 percent ethanol, alongside pure E100 fuel. ## Restrictions Apply To Standard Petrol And Conventional Vehicles A senior ministry official clarified that fuel blends containing more than 20 percent ethanol can only be utilized in vehicles specifically designed and certified to run on high-ethanol concentrations. This means motorists driving ordinary cars powered by standard petrol or E20 fuel, which contains 20 percent ethanol, will not be permitted to fill up with E85 or E100 fuel. ## Weight Limits Revised For Light Petrol And Diesel Vehicles The revised regulations also introduce adjustments to vehicle classification thresholds, fuel specifications, and technical parameters utilized during emission testing procedures. As a direct result of these modifications, the weight limit for affected light petrol and diesel commercial and passenger vehicles has been raised from 3000 kilograms to 3500 kilograms. ## Push For Ethanol Blending Aims To Curtail Crude Oil Imports The central administration has been actively promoting ethanol blending in standard petrol to steadily diminish the nation's reliance on imported crude oil. The country has already rolled out E20 fuel, consisting of 20 percent ethanol mixed with 80 percent petrol, across various regions. Demonstrating industry adoption, Maruti Suzuki India introduced the country's first flex-fuel passenger car, the WagonR, in June of this year, which can operate seamlessly on fuel ranging from E20 up to E100. ## Major Automotive Manufacturers Developing Flex-Fuel Models Alongside Maruti Suzuki, several other prominent automobile manufacturing firms including Toyota, Tata Motors, and Hyundai are actively developing flex-fuel vehicle options tailored for domestic consumers. Prior to this notification, the ministry had proposed amendments to vehicle emission standards to expand the legal framework governing alternative fuels and higher ethanol blending ratios. ## Upcoming Integration Of Biodiesel And Hydrogen CNG Blends The proposed modifications to the Central Motor Vehicles Rules, 1989, are specifically structured to incorporate regulatory frameworks not only for E85 and E100 but also to facilitate the adoption of B100 biodiesel and hydrogen-CNG blended fuels in the near future. ## What this means for you This regulatory update carries direct implications for vehicle owners, prospective car buyers, and the domestic energy sector. - **Across India:** Motorists will gain broader access to environmentally sustainable alternative fuel vehicles as manufacturers introduce new models. Automotive companies benefit directly from updated weight thresholds for light commercial and passenger transport. - **Everyday Drivers:** Owners of standard petrol vehicles or E20 cars are strictly barred from utilizing E85 or E100 fuels. Attempting to run conventional engines on these high-blend fuels can cause severe mechanical damage. - **Economic Impact:** Expanded ethanol integration is designed to reduce the national crude oil import bill while supporting domestic agricultural producers. Car buyers will see an increasing lineup of flex-fuel passenger vehicles in showrooms. - **Automotive Sector:** Major manufacturers like Maruti Suzuki, Toyota, Tata Motors, and Hyundai must align their engine development and emission compliance with the updated rules. This transition accelerates the commercial availability of diverse green fuel options nationwide. ## Why this happened The recent amendments introduced by the government stem from broader national energy security goals and strategic environmental mandates. - **Reducing Import Dependency:** The nation imports a massive share of its crude oil requirements, placing continuous pressure on foreign exchange reserves. Increasing ethanol blending helps displace imported petroleum with domestic alternatives. - **Promoting Green Alternatives:** The transport ministry established the necessary legal and technical framework to integrate high-blend ethanol, B100 biodiesel, and hydrogen-CNG mixtures into the national transportation network. - **Supporting Agricultural Economy:** Producing ethanol from domestic agricultural sources provides a reliable revenue stream for farmers and sugar mills while utilizing surplus harvest yields. - **Adapting To Technological Shifts:** With major automakers engineering advanced flex-fuel propulsion systems, updating the motor vehicle rules became essential to regularize new vehicle classifications and weight limits. ## Questions & Answers ### 1. What are E100 and E85 fuels? E100 is 100 percent pure ethanol fuel, while E85 consists of an 85 percent ethanol blend combined with petrol. ### 2. Can standard petrol cars use E100 fuel? No, standard petrol cars and conventional E20 vehicles are strictly prohibited from using E85 or E100 fuels. ### 3. Which vehicles are permitted to run on E100 and E85? Only flex-fuel vehicles specifically engineered and certified to handle high ethanol concentrations can operate on these fuels. ### 4. What major change did the transport ministry announce? The ministry amended the Central Motor Vehicles Rules to legalise E100 flex-fuel vehicles and increased the weight limit for affected light vehicles from 3000 kg to 3500 kg. ### 5. Which company launched India's first flex-fuel passenger car? Maruti Suzuki India launched the country's first flex-fuel passenger car, the WagonR, in June of this year. ### 6. Why is the government promoting ethanol blending? The government is promoting ethanol blending to steadily decrease the nation's reliance on imported crude oil. ### 7. Which other automakers are developing flex-fuel cars? Alongside Maruti, companies such as Toyota, Tata Motors, and Hyundai are developing flex-fuel vehicles for the Indian market. ### 8. What additional fuels are covered under the proposed rule changes? The proposed amendments also establish provisions for utilizing B100 biodiesel and hydrogen-CNG blended fuels. --- _TrendKia — Har trend, sabse pehle.. Machine-readable view; canonical HTML at the URL above._