Per Bangchak prices on 21 Aug 2026: B7 diesel 38.39 baht/litre (up 0.85 from yesterday), B20 33.39, Gasohol 95 37.69, Gasohol 91 37.32, E20 32.69, E85 28.63. Prices exclude Bangkok local land tax; new prices take effect 05:00 tomorrow. Check at your station, since prices can differ. For fleet, delivery or transport costs, budget with the higher diesel price and watch the B7 vs B20 gap when choosing fuel.