New Delhi, May 26 -- A little over a year after India formally completed its nationwide rollout of E20 petrol in April 2025, a new survey has found that the performance of vehicles has seen a notable drop. While the government celebrates achieving its 20% ethanol-blending target six years ahead of schedule, consumers, particularly those driving older vehicles are reporting severe drops in mileage and accelerated engine damage.

According to a survey by LocalCircles, out of 24,710 surveyed, half of them reported that fuel efficiency has dipped in the last 9 months, with some saying that the mileage has reduced up to 20 per cent.

It also found that among those owning vehicles purchased before 2022, around 29 per cent of owners have experie...