Fuel prices in Siwan today
Petrol, per litre
₹114.56
No change
Diesel, per litre
₹100.50
No change
LPG, 14.2 kg cylinder
₹1,040.00
No change
Diesel price in Siwan: last 10 days
| Date | Per litre | Change |
|---|---|---|
| 6 October 2026 | ₹100.50 | No change |
| 5 October 2026 | ₹100.50 |
We started recording diesel prices for Siwan in October 2026, so this table grows every day. The price has held at ₹100.50 since 5 October 2026.
What diesel costs in Siwan
| Litres | Cost |
|---|---|
| 1 litre | ₹100.50 |
| 2 litres | ₹201.00 |
| 5 litres | ₹502.50 |
| 10 litres | ₹1,005.00 |
| 20 litres | ₹2,010.00 |
| 50 litres | ₹5,025.00 |
| Full tank | Cost |
|---|---|
| Scooter, full tank (about 5 litres) | ₹502.50 |
| Motorcycle, full tank (about 12 litres) | ₹1,206.00 |
| Hatchback, full tank (about 35 litres) | ₹3,517.50 |
| SUV, full tank (about 50 litres) | ₹5,025.00 |
Siwan compared with the rest of Bihar
Diesel in Siwan is the 28th cheapest of 38 districts in Bihar. The state average is ₹100.25, and Patna pays ₹99.36. Across the state the price differs by ₹1.71, from Patna to West Champaran: districts further from the oil companies' depots pay more for transport.
| Cheapest districts | Price |
|---|---|
| Patna | ₹99.36 |
| Munger | ₹99.57 |
| Khagaria | ₹99.63 |
| Vaishali | ₹99.67 |
| Samastipur | ₹99.69 |
| Dearest districts | Price |
|---|---|
| West Champaran | ₹101.07 |
| Kishanganj | ₹101.07 |
| Araria | ₹101.07 |
| Supaul | ₹100.86 |
| East Champaran | ₹100.84 |
See every district in the diesel price list for Bihar.
Diesel price in the metros
| City | Price | Than Siwan |
|---|---|---|
| New Delhi | ₹95.20 | ₹5.30 less |
| Mumbai | ₹97.83 | ₹2.67 less |
| Kolkata | ₹99.82 | ₹0.68 less |
| Chennai | ₹99.55 | ₹0.95 less |
| Bangalore | ₹99.56 | ₹0.94 less |
| Hyderabad | ₹104.23 | ₹3.73 more |
Why diesel costs ₹100.50 in Siwan
The pump price is built up in layers: the oil company's base price (which follows crude oil and the rupee), freight to the pump, the central excise duty, the dealer's commission, and the state's VAT, which is charged on top of everything else. VAT is why diesel costs a different amount in each state, and freight from the nearest depot is why it differs between districts of Bihar. Prices have been revised daily, at 6 am, since June 2017.
Frequently asked questions
What is the diesel price in Siwan today?
Diesel costs ₹100.50 per litre in Siwan, Bihar on 6 October 2026. That is the same as yesterday.
Is diesel cheaper elsewhere in Bihar?
Siwan is the 28th cheapest of 38 districts in Bihar. Diesel is cheapest in Patna (₹99.36) and dearest in West Champaran (₹101.07), a gap of ₹1.71 a litre.
When does the diesel price change in Siwan?
Oil companies can revise petrol and diesel prices every day; the new price applies from 6 am. On most days the price does not move. In Siwan it has been ₹100.50 since at least 5 October 2026.
How much does a full tank cost in Siwan?
At ₹100.50 a litre, 5 litres for a scooter cost ₹502.50, 12 litres for a motorcycle ₹1,206.00 and 35 litres for a hatchback ₹3,517.50.
Why do diesel prices differ between pumps in Siwan?
Indian Oil, Bharat Petroleum and HPCL each set their own retail price, so pumps of different companies in the same town can differ by a few paise. Each pump must display its current price.
Last checked on 6 October 2026. Prices are the retail selling prices oil companies publish for each district; a pump of another company nearby can differ by a few paise.