New Delhi, April 23. Petrol and diesel prices remained unchanged for the 17th day in a row on Saturday. According to the price notification of Indian Oil Corporation, petrol in Delhi costs Rs 105.41 per litre and diesel Rs 96.67 per litre. In Mumbai, a litre of petrol is available at Rs 120.51 per litre while diesel at Rs 104.77. In Chennai, a litre of petrol costs Rs 110.85 while diesel Rs 100.94. In Kolkata, the price of a litre of petrol is Rs 115.12 while diesel is Rs 99.83. The fuel prices were on freeze since November 4, 2021, but the daily revision resumed on March 22 after record 137 days gap. There was increase of Rs 10 for petrol and diesel prices each though 14 revisions. The last revision was made on April 6 by 80 paise a litre each. Fuel prices across the country vary depending upon local taxation and freight charges. The central government also collects excise duty from them.