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How much gas does a semi-tractor trailer hold?

Semi-tractors and trailers come in various sizes and configurations, so the amount of gas they can hold can vary significantly. However, a typical semi-tractor trailer, consisting of a tractor (the front part of the vehicle) and a trailer (the cargo-carrying part), can have a fuel tank capacity ranging from approximately 100 gallons (378 liters) to 350 gallons (1325 liters).