The rising petrol prices in all four metro cities and the increase in CNG costs in Delhi and Mumbai could hit your wallet hard, costing anywhere from a few hundred to a few thousand rupees, if you drive 1,000 kilometre or more each month. Petrol prices have gone by up by Rs 3.3/litre, while CNG prices have jumped by Rs 2 in both Delhi and Mumbai. Depending on the mileage of your car and distance you travel daily to work, the additional fuel expense might really strain your budget.
In this report, we’ll take a look at the new petrol and CNG prices; compare the costs of petrol and CNG (before and after the price hike) for a 1,000 km commute by a car, and see how much CNG vehicles can save compared to petrol cars over the same distance (1,000 km) .
Petrol price changes in metropolitical cities (w.e.f May 15, 2026)
The biggest price rise has been in Kolkata, where the petrol price increased by Rs 3.3 to Rs 108.7 per litre, the lowest hike is in Chennai, where petrol is selling at Rs 103.7 after a Rs 2.8 increase.
| City | Per litre petrol price before May 15 | Per litre petrol price effective May 15 | Hike |
| Delhi | ₹ 94.8 | ₹ 97.8 | ₹ 3.0 |
| Kolkata | ₹ 105.5 | ₹ 108.7 | ₹ 3.3 |
| Mumbai | ₹ 103.5 | ₹ 106.7 | ₹ 3.1 |
| Chennai | ₹ 100.8 | ₹ 103.7 | ₹ 2.8 |
CNG price (city-wise)
As far as CNG prices are concerned, Mahanagar Gas Limited increased the CNG price by Rs 2 each in Mumbai and Delhi. The rates are unchanged in Kolkata and Chennai.
| City | CNG price (earlier) | CNG price (now) |
| Delhi | ₹ 77.09 | ₹ 79.09 |
| Kolkata | ₹ 93.50 | ₹ 93.50 |
| Mumbai | ₹ 84.00 | ₹ 82.00 |
| Chennai | ₹ 91.50 | ₹ 91.50 |
How much will car travel cost you after hike in petrol and CNG prices?
Traveling in a petrol car is going to be costlier in all four metropolitan cities, while CNG car travel will be more expensive in Delhi and Mumbai. However, when we look at the fuel prices, CNG cars will remain significantly cheaper than petrol cars
Fuel cost calculations for petrol and CNG cars after price hike
In our calculations, we will show you the fuel costs of both petrol and CNG cars over a distance of 1,000 kms. We are considering cars with mileages of 15 km/l, 20 km/l and 25 km/l. Here’s what we will be calculating:
- Fuel costs of a petrol car/1000 km (pre and post price hike)
- Fuel costs of CNG car/1000 km (pre and post price hike)
- Money saved through a CNG car (pre and post price hike)
- Amount saved through CNG despite a hike in CNG prices (in cases of Delhi and Mumbai)
| Particulars | Car mileage 15 km/l | Car mileage 20 km/l | Car mileage 25 km/l |
| Petrol expense (earlier) | ₹ 6,318 | ₹ 4,739 | ₹ 3,791 |
| Petrol expense (now) | ₹ 6,518 | ₹ 4,889 | ₹ 3,911 |
| CNG expenses (earlier) | ₹ 5,139 | ₹ 3,855 | ₹ 3,084 |
| CNG expenses (now) | ₹ 5,273 | ₹ 3,955 | ₹ 3,164 |
| Money saved through CNG vs petrol (earlier) | ₹ 1,179 | ₹ 884 | ₹ 707 |
| Money saved through CNG vs petrol (now) | ₹ 1,245 | ₹ 934 | ₹ 747 |
| Extra amount saved through CNG despite price hike | ₹ 67 | ₹ 50 | ₹ 40 |
Extra fuel expenses on every 1,000 km car ride in Mumbai (petrol vs CNG)
| Particulars | Car mileage 15 km/l | Car mileage 20 km/l | Car mileage 25 km/l |
| Petrol expense (earlier) | ₹ 6,903 | ₹ 5,177 | ₹ 4,142 |
| Petrol expense (now) | ₹ 7,112 | ₹ 5,334 | ₹ 4,267 |
| CNG expenses (earlier) | ₹ 5,467 | ₹ 4,100 | ₹ 3,280 |
| CNG expenses (now) | ₹ 5,600 | ₹ 4,200 | ₹ 3,360 |
| Money saved through CNG vs petrol (earlier) | ₹ 1,436 | ₹ 1,077 | ₹ 862 |
| Money saved through CNG vs petrol (now) | ₹ 1,512 | ₹ 1,134 | ₹ 907 |
| Extra amount saved through CNG despite price hike | ₹ 76 | ₹ 57 | ₹ 46 |
Extra petrol expenses on every 1,000 km car ride in Kolkata (petrol vs CNG)
| Particulars | Car mileage 15 km/l | Car mileage 20 km/l | Car mileage 25 km/l |
| Petrol expense (earlier) | ₹ 7,030 | ₹ 5,273 | ₹ 4,218 |
| Petrol expense (now) | ₹ 7,247 | ₹ 5,435 | ₹ 4,348 |
| CNG expenses | ₹ 6,233 | ₹ 4,675 | ₹ 3,740 |
| Money saved through CNG vs petrol (earlier) | ₹ 797 | ₹ 598 | ₹ 478 |
| Money saved through CNG vs petrol (now) | ₹ 1,013 | ₹ 760 | ₹ 608 |
| Extra amount saved through CNG after petrol price rise | ₹ 217 | ₹ 163 | ₹ 130 |
Extra petrol expenses on every 1000 km car ride in Chennai (petrol vs CNG)
| Particulars | Car mileage 15 km/litre | Car mileage 20 km/litre | Car mileage 25 km/litre |
| Petrol expense (earlier) | ₹ 6,720 | ₹ 5,040 | ₹ 4,032 |
| Petrol expense (now) | ₹ 6,911 | ₹ 5,184 | ₹ 4,147 |
| CNG expenses | ₹ 6,100 | ₹ 4,575 | ₹ 3,660 |
| Money saved through CNG vs petrol (earlier) | ₹ 620 | ₹ 465 | ₹ 372 |
| Money saved through CNG vs petrol (now) | ₹ 811 | ₹ 609 | ₹ 487 |
| Extra amount saved through CNG after petrol price hike | ₹ 191 | ₹ 144 | ₹ 115 |
