Petrol prices will go up by Rs.1.82 per litre, excluding taxes, from midnight Friday due to the fall in the value of the rupee and hardening of crude prices in international market, state-run Indian Oil Corporation (IOC) said.

"Since the last price change, the downwards slide of rupee has continued and USD-INR exchange rate has deteriorated to Rs.58.94 per the US dollar during the fortnight. Further, international MS prices have also increased since the last price change," the country's largest oil marketing firm said.