Business
Centre updates motor vehicle rules to formally recognize pure ethanol fuel use
Originally reported by ET Industry as: Govt amends motor vehicle rules to allow E100 fuel for flex-fuel vehicles, clarifies E20 vehicles unaffected
26 Oct 2026, 1:54 pm IST · Xecute.finance News Desk
The crisp read
The administration has modified the Central Motor Vehicles Rules, 1989, to officially permit E100 fuel usage in compatible flex-fuel automobiles. Officially published on October 23, 2026, the update incorporates E85 and E100 into current emission frameworks alongside revised testing criteria.
Why it matters: Indian auto manufacturers and investors must track alternative fuel integration timelines and vehicle compliance regulations.
Deep dive - the full story
The Centre has amended the Central Motor Vehicles Rules, 1989, to recognise E100 fuel for flex-fuel vehicles designed to run on up to 100% ethanol. Notified on October 23, 2026, the changes add E100 alongside E85 in emission regulations and update fuel specifications and testing requirements.
This regulatory update enables the commercial adoption of pure ethanol fuel blends for specialized automobiles without disrupting standard fuel categories. Flex-fuel engines engineered for high ethanol concentrations can now legally operate on E100 under updated compliance frameworks, providing regulatory clarity for green fuel initiatives.
Stakeholders should review the official notification dated October 23, 2026, to ensure upcoming vehicle models meet the newly defined emission standards and fuel testing parameters.
Source: economictimes.indiatimes.com
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