New Delhi, Aug 25 (IANS): Petrol prices have been on the rise for the sixth consecutive day on Tuesday, while diesel held on to its price line that it has maintained since July 30.

In the international market, the crude price has also remained firm hovering over $ 45 a barrel.

State-owned oil marketing companies increased the price of petrol by 11 paise per litre in Delhi, Mumbai and Kolkata on Tuesday while the price rose by nine paise in Chennai.

According to the IndianOil website, petrol prices in Delhi, Kolkata, Mumbai and Chennai increased to Rs 81.73, 83.24, 88.39, 84.73 per litre respectively. However, diesel prices are holding steady in these metros at Rs 73.56, Rs 77.06, Rs 80.11 and Rs 78.86 per litre.

Petrol prices have now risen in nine of the last 10 days and in the national capital, it is now expensive by Rs 1.30 a litre during the period.

Benchmark Brent crude has remained firm and contracts for November delivery on the intercontinental exchange have risen to $ 45.75 a barrel. The US WTI crude is also holding up -- over $ 42 a barrel.