
Diesel fuel prices are influenced by a variety of factors, including crude oil costs, which regularly account for around 50% of end consumer prices. Diesel prices often fluctuate seasonally, with higher demand for heating oil in the fall and winter affecting the diesel fuel market. International demand for distillate fuel, supply and demand dynamics, transportation costs, and local market conditions also play a role in diesel price variations. Additionally, factors such as refinery problems, import delays, and transitions to lower-sulfur diesel fuels can impact production, distribution, and taxation costs, further contributing to fluctuations in diesel fuel prices.
| Characteristics | Values |
|---|---|
| Cost of crude oil | Accounts for about 50% of the monthly average U.S. retail on-highway diesel fuel prices |
| Demand for distillate fuel | Affects U.S. diesel fuel prices |
| Heating oil demand | Influences diesel fuel prices |
| Transportation costs | Increase with distance from the Gulf Coast |
| Refinery problems | Cause diesel inventories to decline rapidly |
| Taxes | State taxes on retail, on-highway diesel fuel in California totaled 96.32 cents per gallon as of January 1, 2024 |
| Transition to less polluting fuels | Affects diesel fuel production and distribution costs |
| International conflict | Intensification of conflict between Israel and Iran is likely to increase oil commodity prices |
| Economic recession | Fuel prices declined during the economic recession in early 2020 |
| State gas-tax holidays | Some states have temporarily suspended their state diesel or gas tax |
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Crude oil prices
The conflict between Israel and Iran, for example, has the potential to impact oil prices globally. If the conflict were to escalate and block the Strait of Hormuz, an oil corridor for approximately 20% of global crude oil, prices could soar to $120-$130 per barrel, as seen after Russia's invasion of Ukraine.
In addition to geopolitical factors, crude oil prices are influenced by economic disruptions such as the pandemic-related supply shocks in 2021 and 2022. The transition to less polluting, lower-sulfur diesel fuels in the United States has also impacted diesel fuel production and distribution costs, with federal excise taxes for on-highway diesel fuel being higher than for gasoline.
The price of diesel fuel is also affected by the demand for heating oil, as the two fuels are produced simultaneously. Seasonal variations in heating oil demand can influence diesel fuel prices, particularly in regions farther from the Gulf Coast, which is the source of about half of US diesel fuel production.
Furthermore, international demand for distillate fuel, which is similar to diesel fuel, can affect US diesel fuel prices. The price of diesel fuel is also influenced by transportation costs, local market conditions, and the location and ownership of retail outlets.
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Supply and demand
The retail price of diesel fuel is influenced by supply and demand dynamics, which can cause price fluctuations. Diesel fuel prices are significantly impacted by the cost of crude oil, which typically accounts for about 50% of the monthly average US retail price. When crude oil prices rise, diesel prices tend to follow suit. Conversely, a decrease in crude oil prices can lead to lower diesel prices, as seen in the latter half of 2024.
Demand for diesel fuel is closely tied to economic trends. When the economy is strong, demand for diesel fuel, particularly in sectors such as transportation and agriculture, tends to increase. During the fall and winter seasons, the demand for heating oil, which is similar to diesel fuel, can also influence diesel fuel prices. Regional variations exist, with areas farther from the Gulf Coast, a major source of US diesel fuel production, generally facing higher prices due to increased transportation costs.
International demand for distillate fuel, which includes diesel and heating oil, also plays a role in US diesel fuel prices. Changes in demand for one type of fuel can affect the price of the other. Additionally, the transition to lower-sulfur diesel fuels in the US has impacted production and distribution costs, and diesel fuel taxes are typically higher than those for gasoline, further influencing diesel fuel prices.
The conflict between Israel and Iran has the potential to disrupt the global crude oil market. If the Strait of Hormuz, an oil corridor for about 20% of global crude oil, is blocked due to escalating tensions, oil prices could soar, as seen after Russia's invasion of Ukraine. This would lead to increased consumer diesel prices once existing inventories are depleted.
In summary, the interplay between the supply of crude oil and international demand for distillate fuel, coupled with economic factors and seasonal variations, drives diesel fuel prices. External factors, such as geopolitical conflicts, can also significantly impact diesel fuel costs.
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Taxes
The federal excise tax for on-highway diesel fuel is also higher than that for gasoline, contributing to higher diesel fuel prices. As of February 6, 2024, the federal excise tax for diesel fuel was 24.3 cents per gallon, which is 6 cents per gallon higher than the tax on gasoline. This disparity in taxation contributes to the price difference between diesel and gasoline.
The transition to less polluting, lower-sulfur diesel fuels has also impacted production and distribution costs, influencing the final price consumers pay at the pump. Additionally, international demand for distillate fuel affects diesel fuel prices in the United States. As heating oil and diesel fuel are practically the same, changes in demand for one can influence the price of the other.
During seasonal shifts, such as fall and winter, the demand for heating oil can affect diesel fuel prices. This occurs because heating oil and diesel fuel are produced simultaneously, so increased demand for heating oil can put pressure on the diesel fuel market. Regional variations also exist, with areas farther from the Gulf Coast, a major source of U.S. diesel fuel production, tending to have higher diesel fuel prices due to increased transportation costs.
In response to rising fuel prices, some states have proposed or implemented gas-tax holidays or rebates to provide relief to consumers. As of August 2022, 29 states had proposed legislation regarding their state fuel taxes, with six states, including California and New York, temporarily suspending their state diesel or gas tax.
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Seasonal demand
Diesel fuel prices are influenced by seasonal demand, which can cause fluctuations throughout the year. One significant factor is the demand for heating oil during the fall and winter months. As heating oil and diesel fuel are produced simultaneously, an increase in heating oil demand can impact the diesel fuel market. This dynamic is particularly notable in regions with significant swings in farmers' demand for diesel fuel, contributing to price variations.
The interplay between heating oil and diesel fuel demand is influenced by their close relationship as practically the same fuels. Consequently, changes in demand for one fuel type can have a ripple effect on the price of the other. This dynamic is further accentuated in regions farther from the Gulf Coast, which is the source of approximately half of the diesel fuel production in the United States. The distance from the production hub increases transportation costs, which are reflected in higher diesel fuel prices for consumers in these areas.
International demand for distillate fuel also plays a role in shaping U.S. diesel fuel prices. The global popularity of diesel engine cars and the use of distillate fuel for electricity generation in various countries contribute to fluctuations in diesel fuel prices. Additionally, unexpected declines in petroleum supply due to refinery issues or import delays can lead to rapid decreases in diesel inventories. In such scenarios, wholesalers and marketers may bid higher for available supplies, further driving up prices, especially if the diesel fuel transportation system cannot efficiently redistribute supplies across regions.
The transition to less polluting, lower-sulfur diesel fuels in the United States has also impacted production and distribution costs, with federal excise taxes for on-highway diesel fuel being higher than those for gasoline. These factors collectively contribute to the dynamic nature of diesel fuel prices, which are influenced by seasonal demand, production costs, and the intricate interplay between regional and international market forces.
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Transportation costs
The West Coast of the United States, particularly California, experiences higher diesel prices due to transportation issues. The West Coast liquid fuels market is relatively isolated and primarily relies on in-region refinery production. As a result, when a refinery outage occurs, it can be costly to transport supplies from outside the region, leading to higher prices for consumers.
International demand for distillate fuel, which includes heating oil and diesel fuel, also impacts transportation costs and diesel prices in the United States. Changes in demand for one type of distillate fuel can affect the price of the other. For instance, during the fall and winter seasons, an increase in heating oil demand can put pressure on the diesel fuel market and drive up prices.
Additionally, the transition to less polluting, lower-sulfur diesel fuels in the United States has affected diesel fuel production and distribution costs, further influencing the final price that consumers pay.
The diesel fuel transportation system's ability to efficiently move supplies between regions also plays a role in maintaining stable prices. If the transportation system cannot keep up with the demand for diesel fuel, prices may remain comparatively high.
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Frequently asked questions
Diesel fuel prices rose in 2022 due to economic disruptions caused by the pandemic and the Russia-Ukraine conflict.
Crude oil regularly accounts for around 50% of end consumer prices of diesel. Therefore, supply restrictions or weak demand outlooks influence prices at the pump.
Diesel fuel prices can fluctuate with the demand for heating oil as the two are produced simultaneously. Seasonal increases in heating oil demand can put pressure on the diesel fuel market.
The transition to lower-sulfur diesel fuels in the United States has affected diesel fuel production and distribution costs. Additionally, the federal excise tax for on-highway diesel fuel is higher than that for gasoline.
Taxes and supply issues can cause diesel fuel prices to be higher in certain regions, such as California, which has higher state taxes on diesel fuel and is sensitive to West Coast supply conditions.











































