Hike in petrol prices to have a direct impact on Indian economy and Rupee. In the steepest ever hike, petrol price was increased today by Rs 7.50 a litre with effect from midnight tonight. State-owned oil firms said they will raise petrol price by Rs 6.28 per litre excluding local sales tax or VAT. The hike translates into Rs 7.50 per litre in Delhi. Petrol in Delhi currently costs Rs 65.64 a litre and after the increase it will be priced at Rs 73.14 per litre.