100 km Fuel Cost Calculator
Work out the fuel cost of a 100 km trip in India for petrol, diesel, CNG or an EV. A 100 km drive costs about ₹693 on petrol (15 km/L), ₹511 on diesel, ₹281 on CNG, or just ₹140 on an electric car. Enter your mileage below for an exact figure.
₹693Petrol (15 km/L)
₹511Diesel (18 km/L)
₹281CNG
₹140Electric (EV)
Calculate Your 100 km Trip Cost
Based on petrol ₹104/L, diesel ₹92/L, CNG ₹76/kg and electricity ₹9/kWh (typical 2025-26 metro prices).
100 km Fuel Cost by Vehicle Mileage
| Mileage | Petrol | Diesel | CNG | EV |
|---|---|---|---|---|
| 10 km/L , SUV / MUV | ₹1,040 | ₹920 | ₹281 | ₹140 |
| 12 km/L , Sedan / Hatchback | ₹867 | ₹767 | ₹281 | ₹140 |
| 15 km/L , Efficient hatchback | ₹693 | ₹613 | ₹281 | ₹140 |
| 18 km/L , Hybrid / diesel | ₹578 | ₹511 | ₹281 | ₹140 |
| 20 km/L , Very efficient | ₹520 | ₹460 | ₹281 | ₹140 |
CNG and EV costs are largely mileage-independent here (CNG at 27 km/kg, EV at 15.5 kWh/100 km). Prices vary by city and station.
Planning a 100 km Trip
A 100 km trip is a short intercity hop or a day’s local running, comfortably done on a single tank in any car and often cheaper by CNG or EV if you have one.
Frequently Asked Questions , 100 km Fuel Cost
How much petrol is needed for 100 km?
At 15 km per litre, a 100 km trip needs about 6.7 litres of petrol, costing roughly ₹693 at ₹104 per litre. A more efficient car at 18 km/L needs less. Use the calculator above for your vehicle.
What is the diesel cost for 100 km?
A 100 km trip in a diesel car at 18 km per litre uses about 5.6 litres, costing around ₹511 at ₹92 per litre. Diesel is usually cheaper per km than petrol thanks to better mileage and a lower price.
How much does a 100 km road trip cost in India?
For fuel alone, a 100 km trip costs roughly ₹693 (petrol), ₹511 (diesel), ₹281 (CNG) or ₹140 (EV). Add tolls, food and any stay for the full trip budget.
Is CNG cheaper than petrol for 100 km?
Yes, significantly. A 100 km trip costs about ₹281 on CNG versus ₹693 on petrol, a saving of around ₹412, which is why CNG is popular for high-mileage drivers despite the higher upfront vehicle cost.
How much does an EV cost for 100 km?
Charging an electric car for 100 km costs only about ₹140 at home rates (₹9 per kWh), the cheapest option by far, roughly a fifth to a tenth of petrol. Public fast-charging costs more.
These estimates use typical 2025-26 metro fuel prices (petrol ₹104/L, diesel ₹92/L, CNG ₹76/kg, electricity ₹9/kWh). Actual costs vary by city, station, driving conditions and your vehicle. Not financial advice.