Bangchak pump prices on 4 Sep 2026: diesel B20 34.14 baht/litre, B7 39.14, high-diesel S 39.14, gasohol 95 38.29, gasohol 91 37.92, E20 33.29, E85 29.20. Prices exclude Bangkok's local land tax. Tomorrow's prices take effect at 05.00. Check the price at your own station before budgeting fuel for delivery or transport costs.