How Many Gallons Does a Semi Truck Hold?


Quick Answer

Semi truck fuel tanks vary in size, but they hold an average of 125 to 300 gallons of fuel. There is a fuel tank located on each side of the tractor, and fuel is distributed between the two tanks to balance weight.

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How Many Gallons Does a Semi Truck Hold?
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Full Answer

Fuel tanks on semi trucks are not standard but are specialized to the buyer's needs. For example, a 2011 Kenworth T660 truck can be purchased previously-owned with dual 120-gallon fuel tanks for 240 total gallons. Tractors carrying larger fuel tanks are ideal for cross-country drivers or drivers of trucks carrying lots of weight. Some truck manufacturers put larger fuel tanks on one side over the other for balance.

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