South Korea caps fuel prices to stabilize markets amid Middle East tensions
South Korea began enforcing a government-set maximum price for refined petroleum products on May 13, with domestic pump prices easing after a period of volatility tied to Middle East tensions. According to the Korea National Oil Corp.’s Opinet system, the nationwide average price for regular gasoline stood at 1,893.3 won per liter at 2 a.m., down 5.5 won from the previous day. Diesel averaged 1,911.1 won per liter, down 7.9 won, though it remained higher than gasoline.
In the capital region, Seoul, price movements were similar. The city’s average gasoline price dropped to 1,918.9 won per liter, a decline of 8.1 won, while diesel fell by 13.5 won to 1,922.7 won per liter. The national and Seoul prices have been edging downward after peaking in the wake of heightened tensions in the Middle East earlier this month.

The trend followed a peak reached after the United States and Iran were drawn into renewed confrontation, with Korea’s domestic prices having climbed in the days after the initial incidents. On May 12, the nationwide gasoline average was 1,898.8 won per liter and diesel 1,919.0 won per liter, each down by 5.5 won and 8.5 won from the previous day, respectively.
The government’s price cap, announced on May 13, sets the maximum per-liter prices for typical gasoline at 1,724 won, auto diesel at 1,713 won, and indoor kerosene at 1,320 won. Officials said the caps will be reviewed and potentially adjusted every two weeks, contingent on developments in the Middle East and overall price movements.
International markets reflected the same period of volatility. After Iran elected a new supreme leader, Ayatollah Seyyed Moztaba Hameneyi, who signaled a tougher stance toward the United States and Israel, Brent crude climbed on the ICE Futures Exchange to settle at $100.46 per barrel for May delivery, up 9.2% from the prior session. The move above $100 a barrel marked the first time since August 2022.

Analysts note that changes in international oil prices typically take about two to three weeks to pass through to domestic pump prices in Korea. The price-cap policy is intended to stabilize local fuel costs amid volatile global energy markets, with further adjustments anticipated in the coming weeks as the Middle East situation evolves.
For U.S. readers, the development matters because Korea is a major importer of oil and refined products, and the price signals from Seoul can influence global energy markets, inflation, and supply chains. Korea’s approach clamps down on refinery margins at the pump, but relies on ongoing assessments of geopolitical risk, which can ripple through pricing and liquidity in U.S. energy markets and broader economic policy discussions.