Diesel will cost Rs 44.95 per litre with effect from midnight tonight as against Rs 44.45 currently, Indian Oil Corp, the nation's largest fuel retailer, said.
"The current level of international prices and INR-USD exchange rate warrant a price increase, which is being passed on to consumers with this price revision," IOC said.
At the last revision on September 1, petrol price was cut by Rs 2 per litre and diesel by 50 paise.
A litre of petrol in Delhi currently costs Rs 61.20.
Bihar goes to poll from October 12 and is being considered a major test of popularity for the ruling BJP.
This is the first increase in diesel price in four months. Diesel price was hiked by Rs 2.71 per litre on May 16. Rates have on consecutive fortnights declined.
Petrol price since mid-May have been cut by a cumulative Rs 5.09 per litre in Delhi (Rs 7.89 in Mumbai where there was no VAT increase). Similarly, diesel rates have been cut Rs 7.83 per litre in Delhi (Rs 10.35 in Mumbai).
