E30 is petrol blended with 30% ethanol. In May 2026 India notified fuel standards for blends up to E30 (IS 19850:2026), setting the technical foundation for the post-E20 roadmap of higher blends and flex-fuel vehicles.
Why E30 now
With E20 achieved early and an ethanol surplus building, higher blends absorb domestic production and deepen import substitution. The notified standards give automakers and oil companies a rulebook to plan against.
What it means for vehicles
Moving past E20 increasingly points to flex-fuel vehicles that can run a range of ethanol blends. Existing E20-rated cars continue on E20; higher blends roll out alongside compatible fleets.
E20 vs E25 vs E30
| Blend | Ethanol % | Status |
|---|---|---|
| E20 | 20% | Achieved 2025 |
| E25 / E27 | 25–27% | Transitional |
| E30 | 30% | Standards notified May 2026 |
See the numbers for yourself.
Frequently asked
Part of our pillar guide — India's ethanol economy in 2030