Bangchak's posted pump prices for 2 Oct 2026: B7 diesel 42.19 baht/litre, B20 diesel 37.19 baht (up 0.75 baht from the previous day), gasohol 95 at 40.69 baht and gasohol 91 at 40.32 baht. Prices exclude the Bangkok local maintenance tax and take effect from 05.00 the next day. Fleets and delivery vehicles should check the actual station price and reprice fuel-linked costs; B20 is the cheapest diesel option on this list.