E20 vs XP100 - Is It Worth Switching?
Thinking of using ethanol-free XP100 to dodge the E20 mileage drop? XP100 costs a lot more per litre. This calculator does the honest math on whether any mileage gain actually pays for the premium.
What is XP100 - and is it really ethanol-free?
XP100 is IndianOil's 100-octane premium petrol, and it is currently the only widely sold ethanol-free petrol in India. Other "premium" fuels - XP95, BPCL Speed 97, HPCL Power - are higher octane but still contain 15–20% ethanol, so they are not an escape from ethanol.
The honest verdict on mileage
Higher octane (like XP100) mainly benefits high-compression / performance engines. In a normal commuter car or bike, you may recover a little of the E20 mileage loss, but rarely enough to offset a price gap of roughly ₹60 per litre. Where XP100 can make sense: peace of mind for a cherished older vehicle, or genuine performance cars designed for high octane.
XP100 is sold at limited outlets. Use our Ethanol-Free & Premium Petrol Finder to see where it's available and how the fuel grades compare.