What a gallon of gas might cost by May amid attacks on Iran

Ethan
8 Min Read

Here’s how much you could pay for a gallon of gas by May because of the attacks on Iran

Americans almost always see gasoline prices climb in the spring as refineries switch to summer blends and road trips ramp up. Add fresh attacks involving Iran—and the risk that shipping or oil output in the Persian Gulf gets disrupted—and that seasonal bump can turn into something bigger. While the exact impact depends on how the situation evolves, the mechanics are clear: even a modest “risk premium” on crude oil filters into the pump within a few weeks.

What you could pay by May: scenario ranges

Note: These are national-average ranges. Local prices vary widely; West Coast and Northeastern states typically run higher, and taxes, refinery outages, and fuel formulation rules can widen spreads. If you want today’s starting point, check current averages from AAA or the U.S. Energy Information Administration (EIA).

– Baseline spring without major escalation
– What happens: Markets price in headlines but oil supply isn’t materially disrupted; Brent holds roughly steady or adds up to $5 per barrel versus early spring levels.
– By May: National average gasoline roughly $3.30–$3.80 per gallon, with most of the increase reflecting the normal seasonal transition to summer gasoline (often 10–30 cents) and routine refinery maintenance.

– Limited escalation, periodic disruptions
– What happens: Attacks and reprisals raise insurance and shipping costs in the Gulf; Iranian exports dip modestly; traders add a risk premium to crude. Brent rises about $10–$15 per barrel.
– By May: National average $3.80–$4.25. High-cost regions (California and parts of the West Coast) commonly see $4.75–$5.50 under this setup.

– Significant disruption to flows or transit
– What happens: Partial interruptions to shipments through the Strait of Hormuz or sustained attacks on regional energy infrastructure push Brent up $20–$30 per barrel for several weeks.
– By May: National average $4.25–$5.00. West Coast $5.50–$6.50; parts of the Northeast and isolated markets with refinery outages can briefly print higher.

– Severe, prolonged outage or wider regional conflict
– What happens: A multi‑week halt or severe restriction to Hormuz traffic (through which about a fifth of global oil consumption typically transits) or major damage to regional production/export facilities. Brent spikes $40–$60+ per barrel.
– By May: National average $5.50–$7.00. Hotspots could touch $7–$9 until supply chains reroute and governments intervene.

Why prices move this way

– The crude pass‑through: Crude oil makes up the largest share of what you pay at the pump. A common rule of thumb is that every $10-per‑barrel move in crude translates to roughly 20–30 cents per gallon at retail, after a lag of two to eight weeks. The lag reflects refinery runs, inventories, and wholesale contract timing.

– The Strait of Hormuz effect: Around 17–21 million barrels per day of crude and condensates typically pass through this narrow waterway. Even a credible threat to that flow raises insurance costs and rerouting times, lifting global benchmarks (Brent) and U.S. wholesale gasoline futures (RBOB).

– Refining and seasonal factors: Spring maintenance and the federally required shift to summer gasoline blends reduce supply and add cost, usually 10–30 cents per gallon on their own. Any unplanned refinery outage can add sharp, localized spikes.

– Taxes and margins: Federal and state fuel taxes are fixed per gallon, not a percentage of price, so they don’t cushion crude spikes. Distribution/retail margins can widen temporarily when wholesale prices are volatile.

What could limit the damage

– Spare capacity and policy tools: Saudi Arabia and the UAE hold most of OPEC’s spare capacity and could raise output if disruptions are sustained. The U.S. and other countries also have strategic reserves that can be released to cool price spikes. Waivers on gasoline volatility rules and temporary shipping and blending flexibilities can also ease regional pressures.

– Demand response and economics: Slower global growth or a strong U.S. dollar can mute oil rallies. If prices spike, discretionary driving often dips, easing demand.

– Rapid de‑escalation: If attacks subside and shipping normalizes, the geopolitical premium often evaporates quickly, as seen after past Middle East flare‑ups.

Regional differences to expect

– West Coast: Limited refinery connectivity to the rest of the country and strict fuel specs make prices higher and more volatile. California can run $1–$1.50 above the national average even without geopolitical shocks.

– Gulf Coast and South: Closer to refining hubs and pipelines, typically lower prices and faster normalization if crude premiums fade.

– Midwest and Northeast: Vulnerable to refinery outages and seasonal constraints; swings can be sharper than the national average.

Timeline: how fast it shows up at the pump

– Futures markets react in minutes; wholesale rack prices adjust in days.
– Retail stations with high turnover update faster; stations with larger tanks or slower sales adjust more slowly.
– Most of the crude-to-retail pass-through from a sustained shock shows up within two to eight weeks—meaning events in March and April are largely reflected by May.

What to watch next

– Brent crude near-term trend: Sustained moves above psychological levels (e.g., $100 per barrel) often feed through to consumer expectations and retail margins.
– RBOB gasoline futures and crack spreads: Signals of whether refiners or crude are driving the move.
– Shipping and insurance in the Gulf: Reports of delays or rising war-risk premia point to persistent costs.
– U.S. gasoline inventories and refinery utilization: Lower stocks and maintenance bottlenecks amplify price moves.
– Government actions: Strategic reserve releases, OPEC+ guidance, and temporary fuel-spec waivers can materially alter outcomes.

How to blunt the impact personally

– Drive smarter: Moderate speeds and gentle acceleration can save 10–20% on fuel. Keep tires properly inflated.
– Time your fill-ups: Wholesale prices move first; retail follows. If you see local prices rising daily, filling sooner can avoid the late-week catch‑up.
– Use rewards and apps: Grocery and station loyalty programs often shave 5–25 cents per gallon.
– Consider alternatives: Carpooling, public transit, or even short-term telework during spikes can cut costs. For frequent long-distance drivers, a hybrid or EV can reduce exposure in future seasons.

A note on uncertainty

I don’t have real-time access to the latest data on the specific attacks or today’s national average. The ranges above reflect typical pass‑through dynamics, seasonal patterns, and historical market behavior during Middle East disruptions. For the most current starting point, check AAA for today’s national and state averages and EIA’s weekly retail gasoline price reports. If you share your location or your local price today, I can refine the May outlook for your area.

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