Fuel isn’t getting cheaper.
Paid ₹500 for XP100 → 2.994L.
167₹ per litre (100 octane rating)
Paid ₹500 for E20 → 4.273L 117₹ per litre (only ~3.418L is actual petrol). (91 octane rating)
We pay petrol prices but get a petrol-ethanol cocktail.
The math is interesting.