Diesel Prices Forecast to Fall 7% in 2026 Amid Global Crude Oil Oversupply

In its latest outlook for 2026, the US Energy Information Administration (EIA) forecasts that on-highway diesel fuel will average approximately $3.46 to $3.50 per gallon throughout the year, marking a potential 7% decline from 2024 average prices. This projection is based on expectations of declining crude oil costs driven by rising global inventories and potential oversupply conditions. The World Bank Commodity Markets Outlook anticipates Brent crude to hover around $60 per barrel through 2026. A Reuters analysis suggests that global oil production may exceed demand growth in 2026, creating downward pressure on crude prices. However, the EIA notes that refining margins are expected to increase through 2026, which could partially offset the impact of cheaper crude oil on retail diesel prices. The forecast comes amid continued volatility in energy markets, with geopolitical factors including ongoing conflicts in Ukraine and the Middle East, global inflation trends, and potential supply disruptions from natural disasters all capable of causing price spikes.

Diesel fuel costs represent 35-40% of trucking operating expenses and 30-50% of total transport costs across various modes, making fuel price trends a critical factor in freight rate determination and supply chain economics. A 7% reduction in diesel prices would provide meaningful relief to carriers and shippers who have faced elevated fuel costs in recent years. For ocean shipping, where bunker fuel can account for 50-60% of a vessel's operating expenses, any moderation in fuel costs helps offset the impact of declining freight rates and overcapacity pressures. The forecast is particularly significant given the current market environment, where carriers are struggling with weak demand, oversupply, and compressed margins. Lower fuel costs could help prevent some carriers from sliding into losses, though the benefit may be partially offset by the need to use more expensive low-sulfur fuels to comply with IMO emissions regulations. For shippers, reduced fuel costs should translate to lower fuel surcharges, though the extent of savings will depend on how carriers adjust their pricing structures.

Trucking companies and freight brokers will see reduced fuel surcharge components in their pricing, potentially improving margins or allowing for more competitive rate offerings. Shippers across all industries benefit from lower transportation costs, which can improve product margins or allow for price reductions to consumers. Ocean carriers may experience modest relief in bunker costs, though the savings will be tempered by the requirement to use cleaner, more expensive fuels under IMO 2020 and upcoming 2030 regulations. Rail and intermodal operators also benefit from lower diesel costs, potentially making these modes more competitive against trucking. The forecast affects contract negotiations, as shippers and carriers must decide whether to lock in rates based on current fuel prices or use index-linked surcharges that adjust with market movements. Logistics providers may see improved demand for services if lower fuel costs stimulate economic activity and freight volumes. However, the projected increase in refining margins means that diesel prices may not fall as rapidly as crude oil costs, limiting the extent of relief.

Monitor weekly EIA diesel price reports to track whether actual prices align with forecasts or if geopolitical events cause deviations. Watch crude oil inventory levels and OPEC+ production decisions, as these directly influence the supply-demand balance. Pay attention to refining capacity utilization and margin trends, as refinery constraints could limit the pass-through of lower crude costs to retail diesel prices. Observe how major carriers adjust their fuel surcharge formulas and whether they maintain index-linked models or shift to fixed surcharges. Track developments in biofuel blending mandates, as these could affect distillate markets and diesel pricing. Monitor geopolitical hotspots including the Middle East, Russia-Ukraine conflict, and US-China trade relations, as disruptions could quickly reverse the downward price trend. Finally, watch for any changes in IMO fuel regulations or carbon pricing mechanisms that could increase the cost premium for compliant marine fuels, offsetting crude oil price declines for ocean carriers.