On September 27, 2026, global oil prices experienced a notable decline, with Brent crude oil falling by $2.28 to $104.32 per barrel and WTI dropping by $2.20 to $92.41 per barrel. This reduction comes amidst market considerations regarding potential ceasefire negotiations between the United States and Iran, alongside ongoing concerns about supply disruptions due to Houthi attacks on Saudi Arabia.

The fluctuations in global oil prices are influenced by various factors, including Iran's announcement of conditions for resuming talks with the U.S. aimed at ending the conflict, the complex situation in the Middle East, and the ongoing conflict between Russia and Ukraine, which continues to target each other's energy infrastructure.

As a result of these dynamics, the prices of petroleum products have shown variability, with an overall upward trend in recent days. In Vietnam, the retail prices for fuel as of September 27, 2026, are as follows:

• E5 RON92: capped at 26,397 VND/liter, which is 690 VND/liter lower than E10 RON95-III.
• E10 RON95-III: capped at 27,087 VND/liter.
• Diesel 0.05S: capped at 30,497 VND/liter.
• 180CST 3.5S fuel oil: capped at 19,472 VND/kg.

Comparatively, fuel prices in neighboring countries as of September 24, 2026, are as follows:

• Thailand: 31,296 VND/liter (government subsidized).
• Cambodia: 33,687 VND/liter (government subsidized).
• Laos: 52,392 VND/liter.
• China: 33,719 VND/liter (government controlled).

In contrast, Vietnam's fuel prices remain relatively low compared to its neighboring countries, indicating a competitive market environment.