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Your car's real-world mileage is usually lower than the ARAI-certified figure. Track it accurately using your odometer readings and actual fuel filled.
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Real Mileage
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Distance Covered
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Cost Per KM
Compare running cost across Petrol, Diesel, CNG, and Electric for the same distance — useful when deciding your next vehicle's fuel type.
Pick a popular route or enter your own distance to estimate trip fuel cost.
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Fuel Needed
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One-Way Fuel Cost
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Round Trip Cost
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⛽ City-Wise Fuel Price Reference (Early July 2026)
City
Petrol (₹/L)
Diesel (₹/L)
CNG (₹/kg)
Fuel prices change daily and vary by dealer within the same city. Figures above are representative as of early July 2026 — always check today's exact price at your pump or fuel price app, or simply overwrite the price field above with today's rate for an accurate result.
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Fuel Cost & Mileage Calculator 2026 — Petrol, Diesel, CNG & EV Running Cost in India
Fuel is one of the largest ongoing costs of vehicle ownership in India, and unlike a one-time purchase decision, it compounds every single day you drive. Petrol and diesel prices are revised daily by oil marketing companies based on international crude oil rates, but the retail price you actually pay varies significantly by state because of differing VAT rates — a state like Telangana can charge over 35% VAT while Gujarat charges under 14%, which is why the same litre of petrol can cost ten to fifteen rupees more in one city than another just an hour's drive away.
This calculator covers all four common fuel types on Indian roads today. Petrol and diesel costs are calculated simply as distance divided by your mileage, multiplied by the price per litre. CNG works the same way but measured in kilograms rather than litres, and typically costs 30-45% less per kilometre than petrol thanks to lower per-unit pricing and often better efficiency. Electric vehicles are calculated differently — using electricity consumption in kWh per 100km and your per-unit electricity tariff — and usually come out as the cheapest per-kilometre running cost of all four, especially if you charge overnight at home on a normal domestic tariff rather than at a public fast-charging station.
Remember that the mileage figure on your vehicle's brochure (ARAI-certified) is measured under controlled test conditions and is almost always higher than what you'll see in real city traffic with air conditioning, aggressive acceleration, and stop-start driving. Use the Real Mileage Calculator tab with your actual odometer readings and fuel filled to get your vehicle's true mileage, then use that number — not the brochure figure — for accurate cost planning. Small, consistent habits like maintaining correct tyre pressure, avoiding harsh acceleration, and timely servicing typically improve real-world mileage by 5-15%.
FAQ — Fuel Cost & Mileage Calculator 2026
How do I calculate fuel cost for a trip? ▾
Divide your trip distance by your vehicle's mileage (km/L) to get litres needed, then multiply by the current fuel price per litre. Example: a 500 km trip at 15 km/L mileage needs 33.3 litres — at ₹103/L that's approximately ₹3,433. For CNG, use km/kg instead of km/L and price per kg.
Why is my real mileage lower than the brochure/ARAI figure? ▾
ARAI-certified mileage is measured on a controlled test track under ideal conditions — no traffic, no AC load variance, and a fixed test cycle. Real-world city driving with traffic, AC usage, cargo weight, and driving style typically brings mileage down 15-30% below the certified figure. Use the Real Mileage Calculator with your own odometer and fuel-filled data for an accurate personal figure.
Is CNG really cheaper than petrol? ▾
Yes — CNG typically costs 30-45% less per kilometre than petrol in most Indian cities, combining a lower per-kg price with generally comparable or better mileage on CNG-optimized engines. The main trade-offs are slightly reduced boot space (for the cylinder), fewer CNG filling stations outside major cities, and marginally lower power output compared to pure petrol mode.
How is EV running cost calculated? ▾
EV cost is calculated using electricity consumption in kWh per 100km (typically 10-18 kWh/100km for cars, lower for two-wheelers) multiplied by your electricity tariff per unit (kWh). Home charging on a domestic tariff (roughly ₹6-9/unit) is usually far cheaper per km than petrol or diesel — often 70-80% less — while public fast-charging stations cost more but are still typically cheaper than petrol.
Why do fuel prices differ so much between cities in the same state? ▾
Within the same state, VAT is generally uniform, but retail prices can still vary slightly due to transportation/freight cost from the depot, local dealer commission, and distance from the refinery. Larger differences occur between states because each state government sets its own VAT rate on fuel independently — this is the single biggest reason for city-to-city price gaps nationally.
How can I improve my vehicle's real-world mileage? ▾
Maintain manufacturer-recommended tyre pressure (under-inflated tyres can cost 3%+ mileage), avoid harsh acceleration and braking, service your vehicle on schedule including air filter and spark plug checks, remove unnecessary weight from the vehicle, and use AC judiciously — at highway speeds above 80 km/h, keeping windows closed with AC on is actually more fuel-efficient than open windows due to reduced aerodynamic drag.
Are the fuel prices on this calculator accurate for today? ▾
Fuel prices are shown as representative figures based on early July 2026 city averages and are meant as a helpful starting point, not a live feed. Since prices change daily and vary slightly by fuel station, always overwrite the price field with today's actual price from your pump, fuel company app, or a live price tracker for a fully accurate cost estimate.