Petrol and diesel prices today were hiked for the sixteenth straight day across the country. On Tuesday, petrol prices in Delhi, Mumbai and Chennai were at Rs. 78.43 per litre, Rs. 86.24 per litre and Rs. 81.43 per litre while diesel prices were at Rs. Rs. 69.31 a litre, Rs. 73.79 a litre and Rs. 73.18 a litre respectively, according to Indian Oil Corporation. In Kolkata, while petrol price crossed Rs. 82 per litre for the first time ever, diesel price was only 14 paise away from Rs. 72 per litre.