India has mandated that gas stations now exclusively offer E20 petrol, a fuel blend containing 20 percent ethanol. This shift, affecting millions of motorists nationwide, has prompted concerns among vehicle owners about its impact on car performance.

Krishna Kumar, a bank employee in New Delhi, reported that after switching to E20 petrol, his 2021 Maruti Suzuki Baleno sedan experienced a noticeable drop in mileage—from about 18 km per litre to nearly 15 km per litre—and slower acceleration, especially when overtaking, driving uphill, or using the air conditioner. Kumar emphasized the need for increased awareness about how E20 may affect older petrol vehicles, stating, “Car owners should be properly informed so they can make the right decisions and avoid unexpected changes in performance and fuel economy.”

Independent automobile expert Sajad Ahmad Wani explained that the effects of E20 fuel depend largely on a vehicle’s design and age. He noted that vehicles not compatible with E20 might not show immediate problems but could experience accelerated wear on rubber hoses, seals, gaskets, and certain fuel system components over time.

From the supply side, Shyamasis Das, a research fellow at the Centre for Social and Economic Progress (CSEP) in New Delhi, said he does not see fuel availability as an issue. However, Das’s support for the ethanol program has faced criticism due to his family’s commercial interests in agro-processing and ethanol production companies, including CIAN Agro Industries and Manas Agro Industries.

The government’s ethanol push aims to promote cleaner fuels, but the rapid implementation has left some vehicle owners questioning the readiness and communication surrounding the transition.

Sources