Four major supermarkets are cutting the price of petrol and diesel.
Asda, Tesco, Sainsbury's and Morrisons all announced that from Saturday they will be reducing petrol and diesel by up to 2p a litre.
The cut - the second this week - is in response to lower wholesale fuel prices.
Asda said that from Saturday morning its customers would pay no more than 131.7p a litre for petrol and 135.7p a litre for diesel.
Asda petrol trading director Andy Peake said: "We're pleased to be reducing the price of fuel yet again for all our customers.
"Our national price cap benefits everyone across the country, meaning that no-one filling up at Asda will be forced to pay a premium for their fuel because of where they live."
Tesco petrol category director Peter Cattell said: "Tesco is dropping the price of petrol and diesel by up to 2p per litre from tomorrow.
"As Britain's biggest fuel retailer, with 497 forecourts, more motorists make savings at Tesco petrol filling stations than any other fuel retailer."
Richard Crampton, Sainsbury's head of fuel, said: "We are always looking at ways to help our customers save money and we know that fuel is a big part of household budgets which is why we are pleased to announce that from tomorrow, we will be cutting petrol and diesel prices by up to 2p per litre across our 280 forecourts."