Bangchak's posted prices for 31 Aug 2026: B20 diesel 33.39 baht/litre, B7 diesel 38.39, Gasohol 91 37.32, Gasohol 95 37.69, E20 32.69. Prices exclude the Bangkok local land tax and take effect from 05:00 the next day. Check your own station before budgeting fuel costs for delivery or fleet routes, since pump prices can differ.