Petrol and diesel prices in India, which never fell in-line with the falling crude oil prices, may soon skyrocket to Rs 80-85 per litre by September-end as crude oil marches on recovery towards pre-coronavirus price levels. Petrol prices surged by Rs 1.74 per litre in a three-day straight hike in fuel prices. Petrol price on Tuesday rose by 54 paise per litre to Rs 73 and diesel price by 58 paise per litre to Rs 71.17 in Delhi. The surge in petrol and diesel prices may get steeper and the prices may further rise by Rs 5-6 per litre in a week as the effect of weak rupee couples with rising crude oil prices, Ajay Bansal, president of All India Petroleum Dealers Association, told Financial Express Online.