Per Bangchak's reference prices on 22 Sep 2026: diesel B20 35.69 baht/litre (up 0.85 baht from the previous day), diesel B7 40.69 baht, gasohol 95 39.94 baht, gasohol 91 39.57 baht, E20 34.94 baht. Prices exclude Bangkok's local land tax and take effect from 05:00 the next day. Check your local station before budgeting, since fuel costs feed directly into delivery, transport and production expenses.