Petrol price hiked up to Rs 108, CNG in Delhi at Rs 79: How much extra you now need to pay for your car; Petrol Vs CNG comparisons for Delhi, Mumbai, Kolkata, Chennai

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)
  

Extra fuel expenses on every 1000 km car ride in Delhi (petrol vs CNG)

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