One barrel of crude oil makes about 19.5 gallons of gasoline, 9 gallons of fuel oil, 4 gallons of jet fuel, and 11 gallons of other products, including lubricants, kerosene, asphalt, and petrochemical feedstocks to make plastics. The ultimate cost of a gallon of gas at the service station depends mostly on the price of crude oil, and most of the profit after expenses goes to the owner-producers of the oil, whether they are governments or oil producing companies.  Almost everywhere in the world outside the US, people pay much more for gasoline, largely because of much larger government taxes, which amount to around $3 to $4 per gallon in many European countries. In the categories "Production cost" and "Producer profit" the values show a range from Saudi Arabian production to USA production. Naturally, all the other values may vary some as well; these are general estimates.
Thanks to Dick Gibson for Historical Information

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