Overview
- The government has defended the national rollout of 20 percent ethanol petrol, citing multi-thousand-kilometre field trials by ARAI, IOCL, IIP-Dehradun and SIAM that reported no major drivability or material-compatibility faults.
- Authorities have launched ARAI trials of a higher 25 percent blend with E10- and E20‑compliant vehicles over 150,000 kilometres and will send results to ICAT for vetting with outcomes expected by the end of 2027.
- Public complaints and viral social media reports claim reduced mileage and engine problems after E20 use, but the ministry says these reports are false or isolated and that insurance and warranty remain valid for compatible vehicles.
- The Bureau of Indian Standards has warned that increasing ethanol from 20 to 25 percent is a significant step that needs careful validation, and industry observers note fuel‑efficiency, emissions chemistry and infrastructure deserve closer study.
- The ethanol blending programme is presented by the government as a way to cut crude imports, lower net CO2 through biogenic ethanol, and raise rural incomes after rapid expansion in domestic ethanol capacity.