What Fuel Does a Semi Truck Use?

Semi trucks are a common site on the roads and highways of the United States. These large, powerful vehicles are capable of hauling extremely heavy payloads across long distances and are an essential part of the transportation industry. But what kind of fuel do they use to power their journeys?

The vast majority of semi trucks in operation today use diesel fuel, which is a type of petroleum-based fuel that is designed to be more efficient and powerful than regular gasoline. Diesel has greater energy density than gasoline, meaning that it takes less fuel to generate the same amount of power. This makes it an ideal choice for large vehicles like semi trucks, which need to haul heavy loads over long distances.

In addition to its superior energy density, diesel fuel also has several other advantages over gasoline. It tends to be cheaper than gasoline, and it also produces fewer emissions when burned, making it better for the environment. Finally, diesel engines require less maintenance than gasoline engines, which can save truck owners money in the long run.

So as you can see, diesel is the fuel of choice for most semi truck operators. Its combination of efficiency, power and cost-effectiveness make it an ideal choice for powering these large vehicles over long distances.


In conclusion, semi trucks primarily use diesel fuel due to its superior energy density compared to gasoline and its ability to produce fewer emissions when burned. This makes diesel an ideal choice for powering these large vehicles over long distances and hauling heavy loads.

Photo of author

Susan Delgado