What is E20 petrol?
E20 is petrol blended with 20% ethanol by volume. The name describes the petrol at the pump, not your car. Your car's own E20 answer is one tap away.
ReviewedE20 answers
Straight answers to your E20 questions.
Each page gives you the short answer, what it means for your car and the Government or maker document it comes from.
Questions drivers ask first
Why did India move to E20?
The Government's stated reasons are to reduce dependence on imported petroleum, lower specified emissions, build a domestic ethanol economy and support farm-linked income.
ReviewedDoes E20 reduce mileage?
E20 can change mileage a little, and there is no single figure for every car. Engine design and tuning, traffic, tyre pressure, servicing and driving style all move the number.
ReviewedWill E20 damage my engine?
Over 3 crore petrol cars and 20 crore two-wheelers run on E20. Service data shows no abnormal corrosion or wear. Government of India, 23 July 2026.
ReviewedDoes E20 void my vehicle warranty?
No. E20 from the pump does not void your warranty; the industry and the Government have both said so in writing. What a claim covers still comes from your maker's written warranty terms and the cause of the fault.
ReviewedYour own car
These answers are about E20 in general. Your car’s own answer, with its maker’s document, is in the car finder.