Is E-20 petrol reducing mileage and damaging vehicles? | Onmanorama Explainer

Has your vehicle's mileage dropped after the switch to E20 petrol? Is the new ethanol-blended fuel affecting older vehicles, or are these just perceptions?

As E20 becomes the standard petrol across India, many motorists in Kerala report lower mileage, fuel system issues and rising maintenance costs. But what does the evidence actually say?

In this Onmanorama Explainer, we speak to motorists, automobile service professionals and road safety experts to examine both sides of the debate. While the Government of India and vehicle manufacturers maintain there is no verified evidence linking E20 to engine failures, experts are calling for greater transparency and long-term independent studies to better understand its impact on India's diverse vehicle fleet.