The Ministry of Road Transport and Highways (MoRTH) issued a notification on 26 October 2026 amending the Central Motor Vehicles Rules (CMVR). The changes allow specially certified flex‑fuel vehicles to use blends up to E100. The weight ceiling for light petrol and diesel cars is also lifted from 3 000 kg to 3 500 kg.
Key Developments
- Authorization for vehicles designed for E85 and E100 to be sold under the amended CMVR.
- Only vehicles certified for higher blends may use them; cars running on E20 or regular petrol cannot use E85/E100.
- Vehicle‑weight limit for light‑weight petrol and diesel cars increased to 3 500 kg.
- Technical references for emission testing, fuel specifications, and classification thresholds have been revised.
- The amendment also opens space for B100 biodiesel and hydrogen‑CNG blends in future vehicle categories.
Important Facts
In June 2026, Maruti Suzuki India launched the Wagon R Flex Fuel, the first Indian passenger car capable of running on blends from E20 to E100. Other major manufacturers such as Toyota, Tata Motors, and Hyundai are developing similar models. The government’s push for ethanol blends is part of a broader strategy to curb the current account deficit caused by heavy crude‑oil imports.
Exam Relevance
These amendments intersect with several UPSC syllabus areas: GS 2 (Polity) – regulatory changes to vehicle law; GS 3 (Economy) – impact on oil import bill, bio‑fuel industry, and energy security; GS 4 (Ethics & Integrity) – policy decisions balancing environmental goals with consumer safety; and GS 1 (Geography) – implications for agricultural ethanol production and rural livelihoods.
Way Forward
- Infrastructure for ethanol distribution must expand to support higher blends.
- Consumer awareness campaigns are needed to explain certification requirements.
- Continuous monitoring of emission standards will ensure environmental benefits.
- Further policy incentives could accelerate adoption of flex‑fuel vehicles across commercial fleets.