Exactly, E85 is supposed to be 30% less energy, but compared to E20 it has 20% less energy. So even if E85 becomes widely available, it will be no different from using E20, about the same cost per KM. Today E20 has the lowest cost per MJ, or in other words, it delivers the most distance traveled per Baht spent. Because Diesel powers Thailand's entire supply chain (logistics, pickup trucks, fishing vessels, public buses, etc) any spike in diesel aggressively drives up inflation and grocery prices. So what government do, they intervene heavily via the Oil Fuel Fund and Excise Tax... so in the end Gasohol users effectively pay higher margins to keep logistics diesel artificially cheap. I believe it's a reason EV is so popular now in Thailand, Thais are not dumb and they know what the gov is doing with oil prices. When Thai people compare the day-to-day running costs of a gasoline car vs EV, the gap is massive! unless it's a very good Hybrid car like the Honda ones. (my in-law here gets 26 km/L on his brand new Honda City Hybrid, amazing, cheaper than my own EV car per KM) Vehicle Type / Powertrain Energy / Fuel Basis Real-World Efficiency Effective Cost per Km PPV/SUV: Toyota Fortuner 2.8 (Diesel B7) ~฿33.00 / L ~12 km/L ฿2.75 / km Standard ICE Sedan (Gasohol 95) ~฿38.00 / L ~14 km/L ฿2.71 / km Standard ICE Sedan (Gasohol E20) ~฿33.00 / L ~13.5 km/L ฿2.44 / km Hybrid: Honda HR-V e:HEV (Gasohol 95) ~฿38.00 / L ~21 km/L ฿1.81 / km Hybrid: Honda HR-V e:HEV (Gasohol E20) ~฿33.00 / L ~20 km/L ฿1.65 / km Pure EV (Public DC Fast Charger) ~฿7.50 / kWh ~6.5 km/kWh ฿1.15 / km Pure EV (Home Standard Meter) ~฿4.20 / kWh ~6.5 km/kWh ฿0.65 / km Pure EV (Home Off-Peak TOU Meter) ~฿2.60 / kWh ~6.5 km/kWh ฿0.40 / km
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