Petrol and diesel prices were hiked again by 80 paise a litre each, taking the total increase in rates in the last two weeks to Rs 9.20 per litre. Petrol in Delhi will now cost Rs 104.61 per litre as against Rs 103.81 previously, while diesel rates have gone up from Rs 95.07 per litre to Rs 95.87, according to a price notification of state fuel retailers.