What Semi Truck Gets the Best Fuel Mileage?

Semi trucks are an essential part of the transportation industry, used to transport freight across the country. They can cover long distances and haul large loads, but they also consume a lot of fuel. The trucking industry is looking for ways to improve fuel efficiency and reduce costs, so it’s important to know which semi trucks get the best fuel mileage.

The first factor to consider when evaluating the fuel efficiency of a semi truck is its engine size. Generally speaking, smaller engines are more efficient than larger ones because they consume less fuel. This means that a semi truck with a smaller engine has a better chance of getting better fuel mileage than one with a larger engine.

Another important factor is the type of transmission used in the truck. Automated manual transmissions (AMTs) have become increasingly popular in recent years as they offer improved fuel efficiency compared to traditional manual transmissions. Some AMTs can even adapt their shifting patterns to optimize performance and save on fuel consumption.

The weight of the cargo being hauled is also important, as heavier loads require more power from the engine and thus consume more fuel. Therefore, lighter loads tend to produce better fuel mileage numbers than heavier ones.

Driving style also plays an important role in determining how much diesel a semi truck consumes. Aggressive driving habits such as sudden acceleration or braking will cause the vehicle to burn more fuel than if it were driven with a steady, consistent speed.

Finally, technological advancements have enabled semi trucks to be equipped with features such as aerodynamic kits or automatic start/stop systems, which can help improve their overall efficiency and reduce diesel consumption.

In conclusion, there are many factors that affect how much diesel a semi truck consumes and thus its overall fuel efficiency. Smaller engines combined with automated manual transmissions and lightweight cargo are all good indicators of better-than-average fuel mileage. Additionally, driving habits and technological advancements can help improve the overall efficiency of these vehicles.


When it comes to finding out what semi truck gets the best fuel mileage, it’s important to consider all factors such as engine size, transmission type, cargo weight, driving style and technological advances. By taking all these elements into account when making your decision you can be sure that you’re getting the most out of your semi truck’s diesel consumption.

Photo of author

Susan Delgado