Overview
- Mahindra says it is developing flex-fuel engines engineered for E30 and higher blends, with ethanol content sensors and fuel-rail or injector heaters, but it has not given a launch timeline.
- Automotive experts quoted by PTI warn E20 can trim fuel economy by roughly 2–5% and may cause long-term wear in non-compliant vehicles’ gaskets, hoses and pipes.
- The Oil Ministry counters that efficiency losses are marginal in calibrated vehicles and highlights higher octane, improved drivability and emissions benefits as it targets E30 by 2030.
- A 2022 Renault Triber owner received an official advisory that the model has not been tested for E20 and use is not advisable, underscoring consumer uncertainty and pump-label confusion.
- Flex-fuel tech featured at Auto Expo 2025, including Hyundai’s Creta 1.0 Flex Fuel, Tata’s E85-compatible Punch, Maruti’s Wagon R Flex Fuel and Toyota’s Innova Hycross capable of running on E20 and higher-rated fuel.