India’s top economic adviser urges a return to low‑ethanol (E10) petrol to shield the nation’s ageing vehicle fleet
Executive summary: India’s Chief Economic Adviser recommended that the government consider reintroducing petrol with an ethanol blend below 20 % (E10) to protect old vehicles and two‑wheelers from potential fuel‑related damage. Such a shift would lower ethanol demand, influence fuel pricing, and require adjustments in automotive compatibility testing and fuel‑distribution infrastructure.
Who is involved: India’s Chief Economic Adviser, the Indian government, automobile manufacturers (especially legacy‑vehicle producers), ethanol producers, and fuel retailers.
Likely next: The government may review the current ethanol‑blending target by Q4 2026; automakers could issue compatibility assessments for E10; if adopted, a revised biofuel policy could be announced before year‑end.
India's Chief Economic Adviser has urged a return to E10 petrol, a blend capped at 10 percent ethanol, arguing that higher concentrations risk damaging the extensive fleet of older cars and two‑wheelers still on the country's roads. The appeal highlights a direct conflict between the national drive to increase ethanol blending — aimed at reducing oil imports and supporting rural incomes — and the mechanical limitations of vehicles that were not engineered for such fuels. This tension raises the prospect of a formal reassessment of the ethanol‑blending mandate that currently envisions a steady rise toward 20 percent. If policymakers act on the adviser's warning, fuel suppliers would need to maintain parallel distribution for lower‑blend petrol, adding complexity to logistics and pricing. Automakers, for their part, could face renewed pressure to certify older models for higher ethanol or to accelerate the rollout of compatible powertrains, while the existing vehicle stock ages further. In the near term, the government is likely to convene consultations to weigh a slower blending trajectory or a permanent E10 baseline for legacy vehicles. The outcome will shape investment decisions across the fuel supply chain and determine how quickly India can advance its biofuel targets without imposing costly retrofits or premature scrappage on a significant share of its motorized population.
Timeline
- — India’s Chief Economic Adviser Calls for Return of E10 Petrol (OilPrice)
Analysis — what this means
Likely next events
- Government committee to evaluate ethanol blend levels by 30 September 2026
- Automaker association to release E10 compatibility report for two‑wheelers by 15 October 2026
- Ethanol producers to submit impact analysis on demand reduction by 31 October 2026
Sectors affected
- Automotive (legacy petrol cars and two‑wheelers)
- Ethanol production and supply
- Fuel retail and distribution
Regulatory implications
- Possible amendment to India’s National Biofuel Policy to permit E10 blend (currently targeting E20)
- Review of vehicle emission and fuel‑compatibility standards for pre‑2020 fleet
Historical parallels
- India’s increase from E10 to E20 ethanol blend in 2020 under the National Biofuel Policy
- Brazil’s temporary reduction of ethanol blend from E27 to E18 in 2015 due to reports of engine wear in older vehicles
Key entities
Sources
Open the full interactive case file on Beyond →