A year ago, filling up a midsize SUV cost about $50. In May 2026, that same fill-up runs north of $75. Do it twice a week across two family vehicles, and the annual toll becomes impossible to ignore: the average American household with two cars is now spending roughly $960 more on gasoline per year than it did before the Iran conflict shut down the world’s most important oil chokepoint.
That figure is not pulled from a single government report. It is a derived estimate, built on federal mileage and fuel-efficiency data and applied to current pump prices. But the price itself is no estimate. The national average for a gallon of regular gasoline stood at $4.48 as of the week ending May 5, 2026, according to the U.S. Energy Information Administration. Before the Strait of Hormuz disruptions began, that average hovered near $3.00, meaning drivers are paying close to 50 percent more per gallon than they were a year ago.
How the Strait of Hormuz became a $4.48 problem
The Strait of Hormuz, a narrow passage between Iran and Oman, carries roughly one-fifth of the world’s daily oil supply. When the Iran conflict escalated into direct strikes on tanker routes, that flow contracted fast, and global crude markets repriced almost overnight. Brent crude, the international benchmark, surged past $110 per barrel in early 2026 after trading below $80 for much of the prior year.
The International Energy Agency’s March 2026 Oil Market Report documented the scale of the disruption: crude and refined-product exports through the strait fell sharply enough to trigger the largest coordinated emergency stockpile release in the agency’s history. On March 11, IEA member countries agreed to draw down 400 million barrels from strategic reserves. The agency’s follow-up April report confirmed that restricted Hormuz flows remained the single most important variable in the global supply picture, though it stopped short of predicting when tanker access might normalize.
OPEC+ members with spare capacity, particularly Saudi Arabia and the UAE, have increased output modestly, but not enough to fully offset the lost Hormuz volumes. U.S. shale producers have ramped drilling in the Permian Basin, yet new wells take months to reach peak production. For now, the supply gap persists, and the strategic reserves are doing the heavy lifting.
How the $960 figure adds up
No federal agency has published a 2026-specific estimate of annual fuel spending for two-car households since the war began. The $960 figure is a calculation, not an official statistic, but it rests on credible federal inputs.
The foundation is the EIA’s analysis of the National Household Travel Survey, conducted by the Federal Highway Administration. That data shows households with two vehicles drive substantially more total miles than single-vehicle homes, though each additional car tends to be used less intensively than the primary one. Pair those mileage patterns with the national fuel-efficiency averages tracked in FHWA Highway Statistics 2024, Table VM-1, and you can estimate how many gallons a typical two-car household burns in a year. Multiply the roughly $1.50 per-gallon price increase by that annual consumption, and the result lands near $960.
One important caveat: the estimate assumes families are still driving the same amount they did before the war. Some households have trimmed discretionary trips, consolidated errands, or leaned harder on one vehicle. But no updated travel survey exists yet to measure those adjustments, so the $960 figure represents a pre-war-behavior baseline applied to current prices. Families who have cut back are likely spending less; families locked into long commutes or rigid schedules may be spending more.
Why the pain hits some families harder than others
A national average hides wide regional gaps. Drivers in California, where state taxes and reformulated-fuel requirements push prices well above the national mean, are absorbing a larger hit. Households in Gulf Coast states, closer to refining capacity, tend to pay less per gallon but often drive longer distances for work and errands. Rural families face the sharpest bind: longer commutes, fewer public-transit options, and older, less fuel-efficient vehicles.
Income matters, too. For a household earning $150,000, an extra $960 a year is an annoyance. For a family earning $45,000, it is the equivalent of losing an entire biweekly paycheck to the gas pump.
The NHTS data highlights another layer. Two-car households often use the second vehicle for shorter, more discretionary trips: school pickups, grocery runs, weekend activities. Those are the miles most easily cut. But for families where both adults commute by car, or where shift work and childcare schedules make trip-chaining impractical, the flexibility is limited.
No federal program currently targets fuel-cost relief at the household level. Congress has debated temporary gas-tax suspensions during past price spikes, but no such measure has advanced in 2026. Some states have explored rebate or tax-holiday proposals, though none had taken effect as of late May 2026.
What determines whether $960 gets worse
Three variables will shape whether the burden grows, holds, or eases in the months ahead.
Hormuz access. The IEA’s April report made clear that tanker flows through the strait remain the single biggest lever on global supply. Any diplomatic progress or military de-escalation that reopens the waterway would relieve pressure on crude prices within weeks. Conversely, a further escalation could push prices higher still.
The reserve drawdown clock. The 400-million-barrel release is large by historical standards, but global oil consumption runs above 100 million barrels per day. If the reserves thin out before commercial supply recovers, a second price spike becomes a real possibility.
Consumer behavior. Sustained high prices eventually push drivers to cut mileage, carpool, or switch vehicles. Early EV sales data for 2026 points to faster adoption, but the electric fleet is still too small to meaningfully dent national gasoline demand in the near term. The more immediate pressure valve is simply driving less, and that trade-off falls hardest on the families with the fewest alternatives.
How two-car families are absorbing the hit right now
For a household running two vehicles on regular gasoline, the math as of late May 2026 is blunt: roughly $80 more per month leaving the checking account compared with a year ago, with no federal rebate, no gas-tax holiday, and no sign that Hormuz shipping lanes will reopen on a predictable timeline. The $960 annual estimate rests on pre-war driving patterns and may overstate the cost for families who have already cut trips. It almost certainly understates it for families who have not. Either way, the gap between what Americans paid at the pump before the conflict and what they pay now is wide, documented, and, for millions of households, growing harder to absorb with each fill-up.
