Drivers at major UK supermarkets, including Tesco, Sainsbury's, Morrisons, and Asda, are experiencing rising petrol prices, which are nearing 159.0p per litre, the highest average price in three and a half years. Compared to last year, petrol is now 26p more expensive per litre. Factors contributing to the variation in fuel prices across different locations include proximity to fuel sources, delivery costs, and local competition among supermarkets. While these supermarkets have national pricing for groceries, fuel prices are set based on local market conditions. Tesco and Sainsbury's have confirmed that they do not have a single national price for fuel, instead adjusting prices based on local data. AA expert Lee Morley noted that rising fuel prices are a significant burden on household budgets, urging drivers to be strategic about their fuel purchases. He recommended shopping around for the best prices, maintaining vehicle efficiency, and utilizing the AA App to locate cheaper fuel options while traveling.