Bangchak's prices for 7 Oct 2026: high-diesel S 42.19 baht/litre, B20 37.19 (up 0.75 baht from the previous day), gasohol 95 40.69, gasohol 91 40.32. Prices exclude the Bangkok local-area tax and tomorrow's prices take effect at 05:00. Check fuel costs in your budget and confirm at your own station, as prices change daily.