Gas Prices

How the Iran war is driving up gas prices across America. Track price changes, find savings tips, and calculate your personal cost increase.

7 questions answered · 3 recent updates · Last updated: March 14, 2026

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CNBC
CNBC March 13, 2026
gas prices

Gas Hits $3.58 National Average, Up 20% Since War Started

The national average for regular gasoline hit $3.58/gallon on March 12, up from $2.98 before the war -- a 20% increase in just two weeks. Diesel reached $4.86/gallon. California prices are even higher, with some stations in San Francisco charging $6.50/gallon. Analysts warn prices could reach $4-5 nationally if the Strait of Hormuz remains disrupted.

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High Impact Questions

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How does the Iran war affect my daily commute costs?

Commuters are paying significantly more. Gas prices averaged $3.58/gallon by March 12, up from $2.98 before the war -- a 20% increase. For someone driving 30 miles round-trip daily, that's roughly $40-60 more per month. Public transit may see fare increases as diesel costs rise. Carpooling apps are seeing increased demand. Tips to save: check tire pressure (proper inflation saves 3% on fuel), drive 55-60 mph for optimal efficiency, combine errands, and ask your employer about remote work options. Some companies are reinstating commuter benefits.

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How high could gas prices actually get?

Nationally $4-5/gallon if Strait of Hormuz stays disrupted. California and Hawaii could see $6-7+. Worst case with prolonged blockade: $6+ nationally.

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Should I fill up my gas tank now before prices go higher?

Yes, topping off now is a reasonable move. Prices are expected to keep rising over the next few weeks as Strait of Hormuz disruptions continue.

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When will gas prices go back down after the Iran war?

It depends on how long the Strait of Hormuz remains closed. If naval escorts resume shipping by late March, prices could ease within 2-4 weeks. If the blockade persists past April, elevated prices could last months.

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Will gas prices keep going up because of the Iran war?

Yes, gas prices have already jumped about 50 cents per gallon since strikes began on Feb 28, and could rise further if Strait of Hormuz disruptions continue.

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