Diesel prices in the United States have reached a record high as disruption linked to the US war with Iran puts pressure on fuel costs.

The national diesel price climbed to $5.85 a gallon on Friday, according to the AAA motorists’ association.

That compares with $3.71 a gallon a year earlier, an increase of $2.14 per gallon, or about 57.7 percent.

The surge is particularly significant because diesel is a critical fuel for several major parts of the US economy.

It is widely used in road freight and hauling as well as agriculture and construction.

Higher diesel prices can therefore increase operating and transportation costs across multiple industries.

The latest record comes amid disruption associated with the conflict between the United States and Iran, adding further pressure to energy markets and fuel prices.