MoRTH Amends Motor Vehicle Rules to Include E100 Alongside E85 Flex Fuel Vehicles

The Ministry of Road Transport and Highways (MoRTH) has notified amendments to the Central Motor Vehicles Rules, 1989, to facilitate the adoption of flex fuel vehicles capable of operating on E85 and other high-ethanol fuels. The amendments expressly include E100 alongside E85 in emission certification provisions.

Vehicles certified for these fuels must comply with the emission and safety requirements applicable to their respective categories. The amended Central Motor Vehicles Rules, 1989 also update biodiesel-related provisions and make technical corrections. They take effect from the date of publication in the Official Gazette.

About E85 and E100 Flex Fuel Vehicles

E85 is a petrol-ethanol blend containing up to 85% ethanol by volume, while E100 consists predominantly of ethanol. Flex fuel vehicles are designed to operate on a range of petrol and ethanol blends using a single fuel tank.

Depending on their design and certification, these vehicles may operate on blends extending to E85 or E100. Their fuel system components and materials are selected for approved blends, while engine controls automatically adjust operation according to fuel composition.

Ethanol Use and Fuel Compatibility

The Ministry stated that greater use of domestically produced ethanol can reduce dependence on imported crude oil. Ethanol use in suitably designed vehicles may also help reduce certain exhaust pollutants and greenhouse gas emissions, depending on the feedstock and production process.

However, E85 and E100 fuels are intended only for vehicles specifically designed and certified to use them. Compatibility with E10 or E20 fuel does not establish that a vehicle is suitable for E85.

No Requirement for Existing Vehicles to Switch

The notification does not require owners of existing vehicles to switch to E85 or modify their vehicles, either now or in the future. Motorists have been advised to check their vehicle's fuel compatibility sticker and follow the manufacturer's guidance in the owner's manual before selecting a fuel at the station.