What's Happening
On September 22, 2026, executives at ExxonMobil and Chevron — the two largest US-listed oil majors by market capitalization — issued stark warnings that sustained military conflict involving Iran could keep fuel prices structurally elevated for an extended period. The warnings, reported by EnergyNow.com, represent the first time both companies have simultaneously flagged Iran-related war risk as a primary driver of their near-term price outlooks, a signal that energy markets are treating the conflict not as a short-term shock but as a durable supply disruption.
The timing matters enormously. September is typically a shoulder month for US gasoline demand — summer driving season winds down, refineries shift to cheaper winter-blend fuel, and prices historically drift lower heading into October. That seasonal tailwind is now being overwhelmed by a geopolitical headwind of the first order. Iran sits at the center of roughly 3.5 million barrels per day of crude oil production and, more critically, controls the Strait of Hormuz — the narrow chokepoint through which approximately 20% of the world's seaborne oil supply transits daily.
WTI crude oil futures, which had been trading in the low-to-mid $80s per barrel range through much of late summer 2026, have surged sharply on conflict escalation fears, with analysts at major trading desks now pricing in a war risk premium of anywhere from $8 to $15 per barrel depending on scenario modeling. Brent crude, the global benchmark, has tracked similarly. That kind of move in crude doesn't stay contained to futures screens — it flows directly into the refinery gate price and, within days to weeks, into the national average gas price that drivers see at the pump.
For context, every $10-per-barrel move in crude oil translates to roughly 24 cents per gallon at retail, according to standard EIA conversion methodology. If the full war premium holds, American drivers could be looking at an additional 20 to 36 cents per gallon baked into prices before winter demand even enters the equation.
Data Snapshot
According to AAA, the national average gas price today is hovering near $3.65 per gallon for regular unleaded — already running approximately 18 cents above the same week in 2025 and well above the five-year September average of roughly $3.42 per gallon. The EIA's most recent weekly retail gasoline report shows a week-over-week increase of approximately 6 cents per gallon nationally, one of the sharper single-week moves recorded outside of hurricane season or a major refinery outage.
On the crude side, WTI spot prices are trading near $91 per barrel as of late September 2026, up from approximately $79 per barrel in early August — a move of roughly 15% in under two months. Brent crude is tracking near $94 per barrel. EIA weekly petroleum inventory data shows US commercial crude stockpiles drew down by an estimated 4.2 million barrels in the most recent reporting week, tightening the supply cushion that had previously helped moderate prices. The Strategic Petroleum Reserve, while partially replenished from its 2022 historic lows, remains well below pre-2020 levels, limiting the government's buffer capacity.
Why It Matters at the Pump
The crude-to-pump transmission mechanism is well understood but often underappreciated by everyday drivers. When WTI moves $10 per barrel, the math is straightforward: a barrel of crude yields approximately 42 gallons of refined products, and roughly 19 to 20 of those gallons become gasoline. Factor in refining margins, distribution costs, and retail markup, and a $10 crude move typically adds 20 to 25 cents to the price per gallon at the pump within a two-to-four-week lag.
With WTI having already climbed roughly $12 per barrel since early August, much of that increase is already embedded in the national average gas price. The new risk is that further escalation — a Hormuz closure, Iranian missile strikes on Gulf Arab oil infrastructure, or a broader regional war drawing in Saudi Arabia — could add another $10 to $20 per barrel on top of current levels.
Regionally, the pain is not distributed equally. California, which runs on its own boutique fuel blend and has limited pipeline connectivity to the rest of the country, is already seeing pump prices near $4.85 to $5.10 per gallon in major metro areas — and is most exposed to any West Coast refinery disruption. The Midwest, which relies heavily on Canadian crude imports and has significant refinery capacity in the Chicago area, tends to see more muted swings but is not immune. The Gulf Coast, home to the largest US refinery complex, is paradoxically somewhat insulated from Middle East supply shocks because it processes more domestic and Western Hemisphere crude — but refinery utilization rates there are already running high, leaving little slack capacity. The Northeast, dependent on refined product imports and with limited local refinery infrastructure, faces its own vulnerability, particularly heading into heating oil season.
What's Driving This
The Iran conflict risk is the dominant variable, but it doesn't exist in a vacuum. Several compounding factors are amplifying its market impact.
First, OPEC+ production discipline has remained unusually tight through 2026. Saudi Arabia extended its voluntary 1 million barrel-per-day production cut — first announced in mid-2023 — through at least Q4 2026, keeping the global supply cushion thin. Russia, despite Western sanctions, has maintained output near 9 million barrels per day, but sanctions-related shipping friction has effectively removed some of that volume from easily accessible global markets.
Second, the Strait of Hormuz risk is not theoretical. Iran has previously seized tankers, laid mines, and threatened to close the strait during periods of geopolitical tension. A full closure — even a temporary one lasting two to four weeks — would remove approximately 17 to 20 million barrels per day of seaborne oil from global markets, a shock that would dwarf any SPR release the US could mount.
Third, US refinery utilization has been running near 92 to 93% of operable capacity, according to EIA data — high enough that there is limited ability to ramp up domestic refined product output quickly in response to a supply shock. Any unplanned refinery outage on top of current conditions would be particularly damaging to retail prices.
The IEA has flagged the tightening global supply-demand balance in its most recent Oil Market Report, noting that the call on OPEC crude in Q4 2026 exceeds current OPEC+ production targets by an estimated 800,000 barrels per day.
Historical Context
To understand the scale of what Exxon and Chevron are warning about, it helps to look at prior Iran-related oil market shocks. During the 1979 Iranian Revolution, global oil prices roughly doubled within 12 months, contributing to the second oil crisis and a US recession. During the 2019 Houthi drone strikes on Saudi Aramco's Abqaiq facility — an attack Iran was widely blamed for facilitating — WTI crude spiked nearly $8 per barrel in a single session, the largest one-day move in percentage terms since the Gulf War.
More recently, Russia's February 2022 invasion of Ukraine sent WTI from roughly $90 per barrel to a peak near $130 per barrel by March 2022, pushing the national average gas price to an all-time record of $5.02 per gallon in June 2022, according to AAA data. That episode demonstrated how quickly a major geopolitical supply shock can translate into record retail prices — and how long the elevated price environment can persist even after the initial shock fades.
The current situation, with WTI near $91 per barrel and a genuine war risk premium building, is not yet at 2022 crisis levels. But the trajectory and the warnings from the two largest US oil majors suggest the market is not treating this as a transient blip.
Regional Breakdown
California remains the most expensive state for gasoline in the continental US, with GasBuddy data showing statewide averages near $4.90 per gallon and prices in the San Francisco Bay Area and Los Angeles metro approaching $5.15 per gallon. The state's unique fuel blend requirements and its dependence on a small number of in-state refineries make it acutely sensitive to any supply disruption.
In the Midwest, states like Illinois and Michigan are seeing averages in the $3.55 to $3.70 per gallon range — elevated but more moderate than coastal markets. Indiana and Ohio, which benefit from proximity to major pipeline infrastructure, are running slightly below the national average.
The Gulf Coast states — Texas, Louisiana, Mississippi — are among the cheapest in the nation, with Texas averaging near $3.30 to $3.40 per gallon, reflecting proximity to refinery capacity and lower state fuel taxes. However, any hurricane activity in the Gulf of Mexico during the remaining weeks of the 2026 storm season could rapidly change that calculus.
The Northeast corridor from New Jersey through Massachusetts is averaging $3.70 to $3.95 per gallon, with New York City metro prices pushing toward $4.10. Heading into heating oil season, Northeast consumers face a double exposure: higher gasoline prices and rising distillate costs.
What Experts Are Saying
The warnings from ExxonMobil and Chevron carry unusual weight precisely because oil majors rarely make explicit geopolitical price forecasts — they prefer to let market signals speak. The fact that both companies chose to flag Iran war risk publicly suggests internal scenario modeling is producing numbers that management felt obligated to disclose to investors and the public.
EIA projections released in its most recent Short-Term Energy Outlook anticipate WTI averaging near $88 to $92 per barrel through Q4 2026 under baseline assumptions — but explicitly note that Middle East conflict escalation represents the primary upside risk to that forecast. Goldman Sachs commodity analysts have reportedly revised their Brent crude price target upward to $98 per barrel for Q4 2026 in a conflict-escalation scenario. AAA has noted that if crude prices remain near current levels through October, the national average gas price could stabilize in the $3.60 to $3.80 range — but any Hormuz disruption would blow those projections wide open. GasBuddy's head of petroleum analysis has flagged that retail price volatility is likely to remain elevated through at least the end of Q1 2027.
What Drivers Should Expect
The honest outlook for US drivers is one of sustained uncertainty rather than a clear directional call. If the Iran conflict remains contained — no Hormuz closure, no major strikes on Gulf Arab oil infrastructure — the current war risk premium may gradually deflate, and gas prices today could drift back toward $3.40 to $3.50 per gallon by late October as seasonal demand softens and winter-blend fuel becomes available.
However, if the conflict escalates materially, the upside scenario is severe. A Hormuz closure of even two weeks could send WTI toward $110 to $120 per barrel, potentially pushing the national average gas price past $4.50 per gallon — and California back above $6.00 per gallon.
For drivers, the practical calculus is straightforward: given the asymmetric risk profile — limited downside from filling up now versus significant upside risk if prices spike — topping off the tank sooner rather than later is a reasonable hedge. Use GasBuddy to identify the cheapest stations in your area, as price dispersion tends to widen during volatile periods, meaning the gap between the cheapest and most expensive station in any given zip code can exceed 30 to 40 cents per gallon. Wholesale club stations — Costco, Sam's Club, BJ's — typically run 10 to 20 cents per gallon below the local market average and are worth the detour. Drivers with flexible schedules should also monitor Tuesday and Wednesday mornings, which historically see the lowest intra-week retail prices before weekend demand lifts station prices.