Diesel reached a national record average of $6.43 per gallon as supply concerns linked to Strait of Hormuz disruptions and the Russia-Ukraine war tightened markets. Regular gasoline averaged $4.47, about $1.53 higher since recent U.S.–Iran hostilities escalated, and local spikes above $8 were photographed in Los Angeles. With Brent near $103 and WTI around $102 per barrel, experts warn of sharply higher winter heating bills — more than 31% for heating-oil households — and broader inflationary effects.
Diesel Hits Record $6.43/Gallon As Strait Of Hormuz Disruption And Ukraine War Drive Prices Higher
Frederic J. Brown/AFP via Getty Images - PHOTO: Diesel prices are displayed above $8 per gallon at a gas station in Los Angeles, on Sept. 17, 2026.
The national average price for a gallon of diesel reached a record-high $6.43 on Friday morning, according to the latest figures from GasBuddy. The jump reflects growing supply worries tied to geopolitical tensions and sustained pressure on global crude markets.
What’s Driving Prices
Energy markets are being squeezed by ongoing disruption in the Strait of Hormuz following a reported U.S.-Israeli strike on Iran in February and by continued fallout from Russia’s invasion of Ukraine. The latter has included an escalation in long-range Ukrainian strikes on Russian oil facilities, tightening global supply and contributing to higher refined-fuel costs.
Consumer Impact
Higher diesel and gasoline prices ripple across the economy. GasBuddy reported the nationwide average for a gallon of regular gasoline at $4.47 on Friday — roughly $1.53 higher than before recent U.S.–Iran hostilities escalated. Photographs from Sept. 17, 2026, showed diesel selling for more than $8 per gallon at a Los Angeles station, illustrating how local prices can spike above national averages.
Heating Bills and Household Costs
Rising fuel costs are especially worrying for households that rely on heating oil. A report from the National Energy Assistance Directors Association (NEADA) warns that heating-oil customers could face winter bills more than 31% higher than last year. NEADA also projects overall winter heating costs to rise by around 8.7% for households that do not use fuel oil.
Crude Prices
Global crude prices remain elevated despite modest intraday declines. Brent crude, the international benchmark, traded near $103 per barrel (down about 1.3%), while West Texas Intermediate (WTI), the North American benchmark, was around $102 per barrel (down about 0.4%) as of Friday trading.
Sources: GasBuddy, National Energy Assistance Directors Association, market price data.
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