Average UK diesel prices rose above £2 a litre for the first time at 8am on Wednesday, after reaching record highs earlier in the week, the RAC said. The price is above the previous record set in June 2022 after Russia's invasion of Ukraine. Filling a family car now costs about £110, around £31 more than at the start of the Iran war on Feb. 28. Diesel has also risen sharply across supermarkets, with Asda increasing prices by 59.3p per litre since Feb. 27, ahead of Morrisons and Sainsbury's. The RAC said 86p of a £2 litre goes to the Treasury through fuel duty and VAT, and called for tax cuts. Petrol stood at 174.7p a litre, including 82p in tax. Planned fuel-duty increases of 3p a litre in January and 2p in March would add 6p at the pump after VAT. Emma Reynolds said the Government had options to give families and businesses more breathing space, while John Healey said the Treasury would set out its plans at next month's Budget. Further increases remain a concern if Donald Trump blocks US diesel exports. The UK has about 4.6 million diesel vans and 10.3 million diesel cars, alongside 18.9 million petrol cars, according to the RAC.