Over the past eight weeks, the average price paid for unleaded by drivers across the UK has fallen by just 9pm. per liter – all of which fell in July – despite wholesale petrol prices falling by 20 p.m. The same time period. According to the motoring body, the wholesale cost of unleaded has now returned to the prices reached at the start of May, meaning a liter should be 167p, not 183p. The difference in wholesale-to-consumer costs means drivers are paying almost £9 more for a tank of petrol than they should, it said. A diesel tank should be lower than the end-July average, the RAC added. Subscribe to the Business Today daily email or follow Guardian Business on Twitter @BusinessDesk “July has been an unreasonably difficult month for motorists due to the reluctance of the big four supermarkets to reduce their prices to a more reasonable level, reflecting the continued and significant reductions in the wholesale cost of petrol and diesel,” the spokesman said. RAC fuel. , Simon Williams. Williams added that it was independent retailers, not supermarkets, who were leading the charge for fairer prices across the country, which forced supermarkets to lower prices. “The best tip for filling is no longer to assume that supermarkets are the cheapest, but to shop around as you are more likely to find an independent retailer that does the right thing and fairly reflects lower wholesale costs by charging a lower price,” said Williams.