
PTT Oil and Retail Business Plc (OR), which operates PTT Station, and Bangchak Corporation raised standard diesel and B20 prices in Thailand by 0.75 baht a litre from 5am on Thursday (September 24, 2026).
PTT Station and Bangchak kept petrol and gasohol prices unchanged.
PTT Station’s price notice confirms the 0.75-baht increase for standard diesel and B20, while premium diesel remains unchanged. The following Bangkok retail prices apply from 5am on September 24 and exclude local maintenance tax:
Bangchak’s Hi Premium Diesel Plus increased by 0.80 baht a litre, compared with the 0.75-baht rise for standard diesel and B20. Bangchak’s official price history confirms the following prices for September 24.