Gas prices hit $4 nationwide for the first time wince 2022

The average price of a gallon of gasoline hit $4 Tuesday for the first time since mid-2022, as the cost of oil surges due to the Iran war

The average price of a gallon of gasoline hit $4 Tuesday for the first time since mid-2022, as the cost of oil surges due to the Iran war.

In the month since the United States and Israel attacked Iran, the average price of unleaded gas has spiked more than a dollar a gallon. On Tuesday morning, the average price nationwide was $4.02 per gallon, motor club AAA said.

It's not just retail gasoline. The diesel fuel used to power trucks delivering goods to stores, farm equipment and public transit has risen to $5.45 per gallon, more than $1.80 higher than it was a year ago.

Driving that is the soaring cost of crude oil worldwide. U.S West Texas Intermediate (WTI) crude has risen more than 50% since the war began Feb. 28, while Brent, the international benchmark, has seen a jump of nearly 60%.

On Monday, U.S. crude oil settled above $100 per barrel for the first time since Russia's full-scale invasion of Ukraine in 2022. Brent crude oil is poised to see its largest one-month increase on record.