Explainer: Why Gasoline Prices Lag Behind Crude Oil Drops

The recent 60-day ceasefire between the United States and Iran has brought a wave of relief to global energy markets, reopening the Strait of Hormuz and sending crude oil prices tumbling.[1][3]

Since their peak in March, U.S. crude oil prices have plummeted by roughly 40%, dropping below $70 a barrel for the first time in months as maritime traffic normalizes.[2][3]

Yet, for American drivers pulling up to the pump, the relief has felt sluggish. While the national average for a gallon of regular gasoline has fallen from a peak of $4.56 to $3.92, that represents only a 14% decline.[1][2]

This glaring discrepancy prompted President Donald Trump to order the Department of Justice to investigate major oil producers, including ExxonMobil and Chevron, for alleged price gouging.[1][2][3]

In a late-night social media post, the president argued that pump prices should be falling "commensurate with the sharply lower prices they are paying for oil," capturing a frustration shared by millions of consumers.[1][2]

However, energy economists and supply chain experts point out that the disconnect between crude oil and retail gasoline is a well-documented structural feature of the energy market, not necessarily a sign of illicit collusion.[4][6]

To understand why pump prices lag, one must first look at the physical journey of oil. Crude oil is merely a raw material; it cannot be pumped directly into a car's gas tank.[6]

It must first be purchased by refineries, which use complex thermal and chemical processes to "crack" the heavy hydrocarbon molecules into lighter, usable products like gasoline, diesel, and jet fuel.[5][6]

The profitability of this process is measured by a metric known as the "crack spread," typically calculated using a 3-2-1 ratio: three barrels of crude yield roughly two barrels of gasoline and one barrel of diesel.[5]

When geopolitical conflicts disrupt global shipping, as seen recently in the Middle East, refineries often scramble to secure alternative supplies, and their utilization rates max out.[5]

Even when the price of the raw crude drops, the cost of the refined product can remain elevated if refining capacity is tight or if the system is still clearing out expensive inventory purchased weeks earlier.[5][6]

Beyond the refinery, the retail market operates on a behavioral economic principle famously dubbed the "rockets and feathers" effect.[4]

Coined by economists to describe asymmetric price transmission, the phenomenon observes that retail gas prices shoot up like a rocket when crude prices rise, but drift down like a feather when crude prices fall.[4]

The root of this effect lies in the ownership structure of local gas stations. Contrary to popular belief, the vast majority of branded gas stations are not owned by "Big Oil" corporations, but by independent small-business franchisees.[6]

When wholesale gasoline prices spike suddenly, these independent owners face a dilemma: if they immediately pass the full cost onto consumers, they risk losing market share to the station across the street.[4][6]

As a result, station owners often absorb the initial price shock, operating at razor-thin or even negative margins during the "rocket" phase to keep their customers loyal.[4]

When wholesale prices eventually fall, station owners do not immediately slash their retail prices. Instead, they enter the "feather" phase, holding pump prices steady for a few weeks to recoup the losses they sustained during the spike.[4]

Furthermore, crude oil only accounts for roughly 50% to 60% of the final price of a gallon of gasoline. The remainder consists of relatively fixed costs that do not change when the global oil market fluctuates.[6]

State and federal taxes, transportation, marketing, and station operating costs remain constant whether crude is trading at $120 or $70 a barrel.[6]

Mathematically, a 40% drop in the price of crude oil only applies to half the cost of the final product, meaning the maximum theoretical drop at the pump would be closer to 20%, even before accounting for refining margins and the rockets-and-feathers lag.[6]

While political pressure and DOJ probes often follow periods of high energy costs, understanding the underlying mechanics of the supply chain offers consumers a clearer picture of why the relief at the pump always takes a little longer to arrive.[4][6]