CNG prices have risen in Mumbai, Chennai, Bengaluru and other locations. Check petrol, diesel and CNG prices today. Petrol and diesel prices remain unchanged today across the listed Indian cities. However, CNG prices have increased in several places, including Mumbai, Chennai and Bangalore. Chennai, Mathura and Meerut recorded the largest CNG increases, at ₹2 each.New Delhi petrol costs ₹102.12 while diesel stands at ₹95.20. In Mumbai, petrol is ₹111.