Petrol and diesel prices were hiked marginally on Tuesday, marking a sixth consecutive day of upwards price revision. In Delhi, the price of petrol was at Rs. 71 per litre with effect of 6 am on Tuesday, February 19, according to Indian Oil Corporation. With that, petrol prices returned to the Rs. 71 per litre mark for the first time since January 31, when the fuel rate was at Rs. 71.09 per litre, data from Indian Oil Corporation - the country's largest fuel retailer - showed. The rate of diesel in the national capital was at Rs. 66.17 per litre on Tuesday.

In Mumbai, petrol and diesel prices were at Rs. 76.64 a litre and Rs. 69.3 a litre respectively, according to IOC.

Currently, the prices of petrol and diesel are reviewed by oil marketing companies on a daily basis, and any changes are effected at fuel stations at 6 am.

Petrol and diesel prices are determined broadly by the rates of crude oil overseas and rupee-dollar in the forex market.

The fuel rates vary from city to city and from pump to pump depending on local taxes and transportation cost.

In Kolkata, the price of petrol stood at Rs. 73.11 per litre on Tuesday, while that of diesel was at Rs. 67.95 per litre.

In Chennai, the petrol rate was at Rs. 73.72 per litre and diesel prices at Rs. 69.91 per litre.

On Tuesday, the petrol prices were hiked by 9-11 paise per litre in the four metros, compared with the previous day's rates. Diesel prices were increased by 6-7 paise per litre, according to the data.

Petrol prices are up Rs. 2.16 per litre and Rs. 2.17 per litre in Delhi and Mumbai so far this year. Diesel prices have been raised by Rs. 3.31 per litre and Rs. 3.54 per litre respectively.

Petrol prices are up Rs. 2.16 per litre and Rs. 2.17 per litre in Delhi and Mumbai so far this year. Diesel prices have been raised by Rs. 3.31 per litre and Rs. 3.54 per litre respectively.

Global crude oil prices have declined 23.3 per cent since the October high of $86.74 a barrel. However, Brent futures - the global benchmark for crude oil - have risen about 23.6 per cent so far in 2019.

The rupee has weakened about 2.3 per cent against the dollar so far this calendar year.