TESCO cut petrol by 6.5p a litre and diesel by 4.5p yesterday after a long-awaited forecourt price war finally broke out at the supermarkets.
Asda was first on Friday, cutting petrol by 5p per litre and diesel by 3p.
It is understood that Sainsbury’s and Morrisons will move at the weekend after trimming prices in recent days.
Drivers are now paying an average of 174p for unleaded and 185p for diesel at the pumps — slashing £5 off a tank, according to the AA.
But it added that should double after wholesale petrol prices, which peaked above £1 a litre on June 1, dropped below 80p two weeks ago.
Prices have been driven down by smaller firms under-cutting big names.
RAC spokesman Simon Williams said: “It appears to be the case that it’s no longer the big four supermarkets that lead on price, but instead smaller independent sites that are prepared to buck the national forecourt trend.
“The price retailers pay has fallen by a massive 17p a litre. Yet average pump prices have reduced by a paltry 4p.”
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The industry is being investigated by the Competition and Markets Authority over pricing concerns.