Diesel fuel prices in the United States have reached a new record high, according to data released Friday by the American Automobile Association (AAA). The national average price for a gallon of diesel reached $5.85. This price reflects the cost of 3.8 liters of diesel fuel. The surge in diesel prices is raising concerns about increased transportation costs and potential impacts on the broader economy. AAA data serves as a key indicator for fuel price trends across the country. This record high is likely to affect both businesses and consumers reliant on diesel-powered vehicles and equipment.