Bangchak's reference prices for 17 Oct (2026): diesel B20 37.19 baht/litre (unchanged), B7 42.94, premium diesel Plus 50.05; gasohol 95 41.44, gasohol 91 41.07, E20 35.69. Prices exclude the Bangkok local-area tax and take effect at 05.00 the next day. Check your local station before budgeting fuel for delivery or transport costs.