Calculate monthly fuel cost for petrol, diesel, CNG, and electric vehicles. City-wise June 2026 prices, mileage comparison, 5-year cost projection — free and instant.
Step-by-step guide to get the most from this tool
Choose your city for auto-filled prices, or enter manually.
Set your vehicle mileage and monthly km driven.
See monthly, annual, per-km cost and fuel consumption.
Switch to Compare tab for petrol vs diesel vs CNG vs electric with 5-year chart.
What makes this tool stand out
Petrol, diesel, CNG, and electric (EV) comparison.
Mumbai, Delhi, Bengaluru, Chennai, Pune defaults (June 2026).
Monthly, annual, and per-km cost for all fuels.
Cumulative cost bar chart to plan long-term.
See CNG/EV savings vs petrol automatically.
Costs recalculate as you adjust inputs.
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Quick answers to common questions
Monthly fuel needed = monthly km ÷ vehicle mileage. Monthly cost = fuel needed × price per litre/kg/kWh. Cost per km = fuel price ÷ mileage.
As of June 2026, approximate prices are: Mumbai ₹104/L, Delhi ₹95/L, Bengaluru ₹102/L, Chennai ₹101/L, Pune ₹104/L. Prices vary by pump and change frequently — edit in the calculator.
Usually yes. CNG costs less per kg and many vehicles get better km/kg. Use the Compare All Fuels tab to see exact savings for your monthly driving.
Home charging averages around ₹8/kWh in India. An EV doing 7 km/kWh costs roughly ₹1.14/km vs ₹6–7/km for petrol at typical mileages.
Defaults: Petrol 15 km/L, Diesel 18 km/L, CNG 20 km/kg, EV 7 km/kWh. Enter your actual vehicle mileage for accurate results.
Yes. The comparison tab shows annual costs and a 5-year cumulative bar chart for all four fuel types at your monthly km.
Yes. Select "Enter manually" for city, or edit the auto-filled price for any city.
It depends on city prices and vehicle. Electric is often cheapest per km; CNG is typically cheaper than petrol/diesel for compatible vehicles.
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Auto-filled from city — edit to override
At 1500 km/month with default mileage per fuel type
Over 5 years, EV saves ₹5,21,143 vs petrol