Trip Fuel Cost Calculator - Estimate Petrol/Diesel Cost
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What will this drive cost you?
Pick your fuel type, enter the distance and your vehicle's efficiency — get the full cost, tolls included, split across vehicles or passengers.
How to calculate your road trip fuel cost
Fuel is usually the single biggest cost on any Indian road trip after accommodation, and it's the easiest one to underestimate. A car that does 15 km/l feels efficient in the city, but load it with luggage and four passengers, add hill climbs, and real-world mileage on a route like Delhi–Manali or Mumbai–Goa often drops by 15–20%. This calculator uses your vehicle's actual mileage figure (not the manufacturer's claimed number) along with today's local fuel price, so the estimate reflects your trip, not a generic average.
Enter the one-way distance, your fuel type, and your car's mileage. Switch on round trip if you're driving back the same way — tolls and fuel are automatically doubled. If you're travelling in a convoy, set the number of vehicles, and if you're splitting fuel costs with co-passengers, set the number of people to see the per-head share instantly.
Petrol vs diesel vs CNG vs EV — which is cheaper for long drives?
Diesel vehicles typically return 15–25% better mileage than their petrol counterparts and diesel is usually priced lower per litre, which is why diesel SUVs remain popular for long highway drives in India. CNG works out cheapest per kilometre for cars that support it, but tank range is shorter, so factor in refuelling stops on routes with sparse CNG stations (hill routes especially). EVs have the lowest running cost per km, but for road trips beyond city limits, charging infrastructure availability along the route matters more than the per-unit cost — check charging points on your specific route before relying on this as your only calculator input.
Frequently asked questions
Does this calculator include toll charges?
Yes — enter your one-way toll and parking estimate and it will double it automatically if round trip is selected. For an accurate toll figure, most Indian highway toll calculators (NHAI FASTag toll calculator) will give you the exact one-way toll for your route.
Why is my actual fuel bill higher than the estimate?
Real mileage drops with AC use, hill driving, heavy luggage, and traffic idling. As a rule of thumb, use 85% of your car's claimed mileage figure for a more realistic hill-route estimate.
How do I split fuel cost fairly among co-passengers?
Set the "number of people" field to however many are sharing the fuel cost, and the calculator divides the total (fuel + toll) evenly. For splitting other trip expenses like food and stay separately, use our Trip Expense Splitter.
Can I use this for a multi-car convoy?
Yes, set "number of vehicles" to however many cars are travelling together — fuel and toll costs are multiplied per vehicle, and the total is what the whole convoy will spend.
Is this calculator accurate for hatchbacks vs SUVs?
The calculator works for any vehicle — just enter your specific vehicle's real mileage rather than a generic figure, since hatchbacks, sedans and SUVs vary widely in fuel efficiency.
Road trip essentials worth carrying
Handy for any long drive, picked for Indian road conditions
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