Oil marketing companies (OMCs) hiked fuel rates across four metro cities on Friday. A litre of petrol touched Rs. 90.57 per litre in Mumbai, while diesel was capped at Rs. 79.01 per litre. In Delhi, petrol was retailed at Rs. 83.22 and diesel was sold at Rs. 74.42 per litre on Friday. A litre of petrol was purchased at a price of Rs. 86.51 in Chennai and Rs. 85.03 in Kolkata, as mentioned in price notification of state-owned fuel retailers. Diesel was being sold at Rs. 79.01 per litre in Mumbai, Rs. 78.69 per litre in Chennai and Rs.76.27 per litre in Kolkata on Friday.