Fuel Cost Calculator
Daily, monthly, yearly and trip fuel cost for petrol, diesel and CNG cars. Same formula CarWale and CarDekho use on every mileage page.
Enter running details
Tip: use real-world city mileage, not ARAI.
Cost per km
₹6.87
petrol @ ₹103 ÷ 15 km/l
Running cost
Compare with EV
An EV on home charging (₹8/unit, 120 Wh/km) costs ~₹1/km — about ₹1,200/month for this same 1,200 km vs ₹8,240 on petrol.
Open EV vs Petrol calculator →How fuel cost is calculated
Cost per km = fuel price ÷ mileage. Monthly cost = daily km × 30 × cost per km. A petrol SUV at 12 km/l and ₹103/litre costs ₹8.58/km — ₹10,300/month at 40 km/day. The same running on CNG at 22 km/kg costs ~₹3.45/km, and on an EV at home rates ~₹1–1.5/km. Small mileage errors swing results a lot, so always use your measured city mileage.
Frequently asked questions
What is the monthly fuel cost for 1,000 km?
At 15 km/l and ₹103/litre: (1000 ÷ 15) × 103 ≈ ₹6,867. Change mileage or price above for your car.
How do I improve mileage?
Steady 60–80 km/h, correct tyre pressure, light load, timely service and minimal idling with AC can improve real-world mileage 10–20%.