Gasoline prices in the United States surged above $4 per gallon on Tuesday, March 31, 2026, marking the highest national average since 2022 and raising fresh concerns about inflationary pressures on American households.
The national average reached approximately $4.02, ending nearly four years below this threshold.
The spike follows escalating conflict in the Middle East. Since late February 2026, operations involving the United States, Israel and Iran have disrupted global oil supplies, particularly through the Strait of Hormuz, a critical route for about 20% of global crude shipments.
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Crude prices have climbed past $100 per barrel, feeding through to higher refining costs and retail fuel prices.
Gasoline has risen roughly 35% since late February, echoing the 2022 surge triggered by Russia’s invasion of Ukraine, when some regions saw prices approach $5 per gallon.
Diesel, vital for freight, now averages above $5.45 per gallon, driving up shipping and consumer goods costs.
Analysts warn that if tensions persist, fuel prices could climb further, intensifying financial strain on households and businesses.