NEW DELHI: Petrol price was hiked by a steep Rs 2.35 per litre on Saturday, the sixth increase in rates in three months, and diesel by 50 paise per litre on falling rupee and firming international oil prices. The increase in rates, which will be effective from Saturday midnight tonight, are excluding local sales tax or VAT, Indian Oil Corp, the nation’s largest fuel retailer, announced. The actual hike will vary from city to city.