400 km Fuel Cost Calculator
Work out the fuel cost of a 400 km trip in India for petrol, diesel, CNG or an EV. A 400 km drive costs about ₹2,773 on petrol (15 km/L), ₹2,044 on diesel, ₹1,126 on CNG, or just ₹558 on an electric car. Enter your mileage below for an exact figure.
₹2,773Petrol (15 km/L)
₹2,044Diesel (18 km/L)
₹1,126CNG
₹558Electric (EV)
Calculate Your 400 km Trip Cost
Based on petrol ₹104/L, diesel ₹92/L, CNG ₹76/kg and electricity ₹9/kWh (typical 2025-26 metro prices).
400 km Fuel Cost by Vehicle Mileage
| Mileage | Petrol | Diesel | CNG | EV |
|---|---|---|---|---|
| 10 km/L , SUV / MUV | ₹4,160 | ₹3,680 | ₹1,126 | ₹558 |
| 12 km/L , Sedan / Hatchback | ₹3,467 | ₹3,067 | ₹1,126 | ₹558 |
| 15 km/L , Efficient hatchback | ₹2,773 | ₹2,453 | ₹1,126 | ₹558 |
| 18 km/L , Hybrid / diesel | ₹2,311 | ₹2,044 | ₹1,126 | ₹558 |
| 20 km/L , Very efficient | ₹2,080 | ₹1,840 | ₹1,126 | ₹558 |
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 400 km Trip
A 400 km journey is a typical weekend getaway distance, three to six hours of driving, well within one tank for most cars. Fuel type makes a real difference to the cost at this range.
Frequently Asked Questions , 400 km Fuel Cost
How much petrol is needed for 400 km?
At 15 km per litre, a 400 km trip needs about 26.7 litres of petrol, costing roughly ₹2,773 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 400 km?
A 400 km trip in a diesel car at 18 km per litre uses about 22.2 litres, costing around ₹2,044 at ₹92 per litre. Diesel is usually cheaper per km than petrol thanks to better mileage and a lower price.
How much does a 400 km road trip cost in India?
For fuel alone, a 400 km trip costs roughly ₹2,773 (petrol), ₹2,044 (diesel), ₹1,126 (CNG) or ₹558 (EV). Add tolls, food and any stay for the full trip budget.
Is CNG cheaper than petrol for 400 km?
Yes, significantly. A 400 km trip costs about ₹1,126 on CNG versus ₹2,773 on petrol, a saving of around ₹1,647, which is why CNG is popular for high-mileage drivers despite the higher upfront vehicle cost.
How much does an EV cost for 400 km?
Charging an electric car for 400 km costs only about ₹558 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.