Crude oil prices influence gasoline and diesel because crude is a major refinery input, but there is no fixed crude-to-pump-price multiplier. Refining margins, fuel supply and demand, distribution, taxes, local conditions and the timing of retail adjustments all affect what drivers pay. Higher fuel prices can also raise U.S. inflation directly and feed into some other prices indirectly, usually with a smaller and less predictable effect.
The figures below describe the United States; “gasoline” is used for U.S. petrol data. Pump prices and tax structures vary by state and locality, and the inflation findings are U.S.-specific.
How a crude-oil price change reaches the pump
Crude is the principal feedstock for gasoline, but the retail price per gallon includes several other components. The U.S. Energy Information Administration (EIA) separates the price into crude oil, refinery costs and profits, distribution and marketing costs and profits, and taxes. When taxes and retail distribution costs are comparatively stable, changes in crude and refining costs account for much of the movement in gasoline prices, though the mix varies over time and place. EIA: Factors affecting gasoline prices
- Crude oil: the raw material refineries buy.
- Refining: the cost of processing crude into usable fuels, plus the margin between the value of refined products and crude.
- Distribution and marketing: costs and margins between the refinery and the retail station.
- Taxes: federal, state and, in some places, local charges.
These shares are not fixed. EIA estimates crude cost from refiners’ acquisition costs and refining costs and profits from the difference between wholesale product value and crude cost. Taxes use national-average federal and state rates; distribution and marketing is calculated as the residual after the other components. Because pump prices often adjust after spot and wholesale prices move, the component shares can shift during the transition. For example, the measured refinery share may rise during an upswing before retail prices catch up; later, the distribution-and-marketing share may appear larger as pump prices adjust. EIA: Gasoline and Diesel Fuel Update methodology and data
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What recent component estimates show
The EIA’s U.S. monthly estimates illustrate why “crude is about half the pump price” should not be treated as a constant. In November 2025, crude accounted for 47.3% of the regular-gasoline price; in April 2026, 57.1%; and in May 2026, 51.9%. In May 2026, the average retail price was $4.479 per gallon: 21.7% was attributed to refining, 14.8% to distribution and marketing, and 11.5% to taxes. These are historical national monthly estimates, not a local price quote or a forecast of how a future crude-price change will pass through. EIA: Gasoline and Diesel Fuel Update
Why pump prices may not move in step with crude
Crude prices are only one influence on the wholesale cost of gasoline or diesel. A crude-price change can coincide with a change in refinery margins, product availability, demand, taxes or distribution costs. Retail stations may also take time to reflect changes in wholesale prices, so the pump price can lag the market moves that preceded it. The direction of the crude move alone does not determine the size or timing of a local price change.
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Taxes charged per gallon also affect how a market change compares with the final pump price. As of January 2026, EIA reported these U.S. averages:
| Fuel | Federal taxes and fees | Average state taxes and fees |
|---|---|---|
| Gasoline | 18.40 cents per gallon | 33.27 cents per gallon |
| Diesel | 24.40 cents per gallon | 35.50 cents per gallon |
The state figures exclude county and local taxes; local taxes and market conditions can differ. These national averages are not a statement of the tax bill in any particular state. Because much of the tax is a fixed amount per gallon, the same absolute increase in the fuel’s pre-tax cost can represent a different percentage of the final price depending on fuel type and location. EIA: Average state and federal motor fuel taxes
Why diesel can cost more or less than gasoline
Diesel shares the crude-oil input with gasoline, but it is a separate refined product with its own wholesale market. Its pump price reflects crude, refinery processing and product-specific margins, distribution and marketing, taxes, station operations and local conditions. Diesel prices can therefore move differently from gasoline even when both respond to crude.
Since September 2004, U.S. diesel has generally been priced above regular gasoline, according to EIA. The agency points to increased global demand for distillate products and the costs of producing and distributing ultra-low-sulfur diesel in the United States as factors behind that historical pattern. It is not a rule for every date or station. EIA: Factors affecting diesel prices
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Refinery margins and seasonal demand matter
A crack spread is an indicator of the potential profitability of refining crude into products, and EIA uses crack spreads as a proxy for refinery margins. A higher diesel crack spread can add to diesel’s wholesale cost independently of a change in crude. Distillate demand also includes uses beyond road transport, such as agriculture and, in the northeastern United States, seasonal heating. In an analysis dated September 18, 2026, EIA said tight distillate supply and elevated crude prices raised diesel prices, while a high diesel crack spread added to retail prices. That describes the market conditions at that time, not a permanent relationship. EIA: Diesel prices and distillate-market conditions, September 18, 2026
Diesel can affect household costs beyond what drivers pay at the pump: when it is expensive, freight by road and rail can cost more. How much those costs reach consumer prices depends on businesses’ costs, pricing choices and the wider economic conditions.
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How fuel prices affect household inflation
Fuel prices affect inflation through a direct channel and an indirect one. The direct, first-round effect is a change in the price consumers pay for motor fuel or household fuels such as heating oil. The indirect effect can occur when businesses pass higher fuel, freight or other energy-related input costs on through the prices of goods and services. Wage responses are another possible second-round channel, but the size and timing of indirect effects vary with the duration of the shock, firms’ costs and pricing decisions, substitution and broader economic conditions. An oil-price increase does not automatically make every consumer price rise.
Fuel’s weight in the U.S. CPI basket
The Consumer Price Index (CPI) tracks price changes in a representative basket, not any individual household’s spending. In the U.S. CPI for All Urban Consumers (CPI-U), gasoline of all types had a relative importance of 2.895% in December 2025, while household energy had a relative importance of 3.402%. Those are CPI basket weights, not a prediction that a particular crude-price change will move CPI by the same percentage. Household energy includes electricity and utility piped gas as well as other fuels; their prices depend on their own supply sources, rates, regulation and fees. Fuel oil alone had a relative importance of 0.083%. BLS: CPI relative importance BLS: Energy in the CPI
For a household, the effect may differ from the CPI average. Driving distance, vehicle efficiency, heating needs, location and energy choices all affect how exposed its budget is to changing fuel prices. CPI category weights describe the population-level index, not a household budget calculator.
Why the effect on non-energy prices is usually indirect and lagged
Federal Reserve economists Cristina Conflitti and Matteo Luciani reported in an August 2017 study, with an accessible revised note dated April 2019, that oil prices passed through to core inflation only through their effect on the economy as a whole. Their estimate was small, statistically different from zero and long lasting. A separate Federal Reserve summary characterizes empirical estimates of energy pass-through into core inflation as generally small, with long and variable lags. These findings support a limited, indirect and uncertain effect on prices beyond energy—not no effect, and not a one-for-one relationship. Federal Reserve: Oil Prices and Inflation Dynamics Federal Reserve: Energy prices and inflation, October 21, 2004
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- Weekly gasoline and diesel prices: EIA’s Gasoline and Diesel Fuel Update reports regional gasoline and on-highway diesel pump prices. Check the reporting week and series definition when comparing values. EIA weekly fuel-price data
- Consumer price changes: BLS CPI indexes measure price change over time. BLS average fuel prices per gallon instead describe price levels; a price-per-gallon series and an inflation index answer different questions. BLS Consumer Price Index
- Fuel categories: BLS groups motor fuel within private transportation and transportation, and household energy within fuels and utilities under housing. Its household-energy categories include fuel oil, propane/kerosene/firewood, electricity and utility gas. BLS: Motor fuel in the CPI BLS: Energy in the CPI
These measures answer different questions: EIA’s pump-price series show what drivers pay, while CPI indexes show how a broader set of consumer prices changes over time. Neither alone predicts what an individual household will spend.
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