Petrol prices are set to rise by up to four pence a litre in the next few days, retailers have predicted.
The rise was forecast by the Petrol Retailers Association (PRA), and would add around ?2 to the cost of filling a typical family car.
It comes as forecourts pass on increased wholesale costs to motorists.
"Independent retailers have been soaking up this increase at the expense of already tight margins because they know how hard the motorist is squeezed," said PRA chairman Brian Madderson.
But he warned: "The floodgates will have to open soon."
The AA forecast a smaller rise of about 2.5 pence per litre, as it accused the industry of failing to pass on falls in wholesale prices as quickly as increases.
The Office of Fair Trading will decide next week whether to launch an investigation into the fuel market.
Link: Petrol Price Rise On Way As 'Floodgates Open' - Yahoo! News UK
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