Diesel Prices Fall Below $5/Gallon Amid Geopolitical Shifts

The benchmark diesel price has fallen below $5 per gallon for the first time since March, driven by gradual reopening of the Strait of Hormuz and shifting geopolitical conditions. 8-cent drop from recent peaks. However, this price remains approximately 94 cents above pre-conflict levels, reflecting the enduring supply disruption and market volatility created by the Iran war. For supply chain and logistics professionals, this development carries significant operational implications.

Diesel fuel surcharges—which are calculated based on DOE/EIA weekly benchmarks—will see downward adjustment, potentially improving transportation economics for carriers and shippers. However, the market remains characterized by substantial uncertainty, with conflicting signals from analysts regarding long-term price trajectories. Bank of America projects Brent crude will average $82/barrel but warns that supply deficit conditions may persist into Q4 2026, driven by the need to restore normal flows through the Strait and clear accumulated mines. The geopolitical dimension adds a layer of strategic complexity.

The reported flooding of Iranian crude onto global markets (30+ million barrels to Asia in a single week) may be temporary as blockaded cargoes clear the supply chain. The underlying risk remains that any deterioration in the peace agreement could rapidly spike prices again, making fuel cost forecasting and surcharge management critical planning functions for transportation networks.