How Much Does It Cost To Fill a Semi-truck?

The rising cost of diesel fuel is prompting many businesses to reevaluate their shipping and transportation strategies. Alternative transportation methods, such as rail or waterways, are worth considering to reduce shipping costs.


How much does it cost to fill up an 18-wheeler? 

The cost of filling up an 18-wheeler varies depending on the fuel price and tank size. In the US, a truck with one 120-gallon tank costs around $360 to fill up, whereas the longer-haul trucks with two 150-gallon tanks cost approximately $900. Typically, an 18-wheeler can travel about 600 miles on one 120-gallon fuel tank at a fuel consumption rate of 6 mpg. However, the fuel cost and consumption rate can vary depending on the type of truck and its usage.

How much does a semi-truck spend on gas? 

The cost of gas for a semi-truck can be high. The average trucker travels around 68,000 miles annually, costing about $37,400 in fuel expenses before the actual fuel cost. Some truckers travel over 100,000 miles annually, resulting in a five-figure fuel cost. The cost of operating a semi-truck also includes increased wear and tear on its components, adding to the expense.

Fuel tank capacity of an 18-wheeler

Typically, semi-truck fuel tanks hold between 125 to 300 gallons of fuel. Each side of the tractor has a fuel tank connected to distribute fuel evenly and balance the truck’s weight. Most 18-wheelers have two fuel tanks, and some may have three or more, depending on the truck’s size and fuel requirements. The fuel tanks may be larger to support the extra weight when carrying a heavy load.

How long does it take to fill up an 18-wheeler?

Filling up an 18-wheeler takes 10-15 minutes once the driver pulls into the pump. The tanks can hold up to 300 gallons of fuel. The average fuel efficiency is around 7 miles per gallon, allowing truckers to make long hauls without refueling frequently.

How far can a semi go on a full tank?

An average semi-truck can travel approximately 2,100 miles on a full tank, with a fuel capacity of about 300 gallons and an average fuel efficiency of 7 miles per gallon. However, this estimate can vary based on the truck’s specifications, cargo type, and route terrain. Understanding these variables helps drivers plan fuel requirements and ensure they have enough to reach their destination.

How many miles does a semi-truck get per tank? 

The average cost per mile of driving a semi-truck is $0.54, considering the average price of diesel fuel at $3.50 per gallon. However, this amount varies depending on the truck and diesel fuel price. Additional costs, such as maintenance and repairs, must be considered when calculating a semi-trucks total cost per mile.


Despite rising fuel costs, semi-trucks remain essential to the economy, transporting goods across long distances daily. Understanding the cost of fueling and operating an 18-wheeler is crucial for businesses that rely on shipping and transportation to streamline their expenses and maximize profits.

About the author, Laurence Perkins

Laurence Perkins is the passionate car enthusiast behind the blog My Auto Machine. With over a decade of experience in the automotive industry, Perkins has knowledge and experience with a wide range of car makes and models. His particular interests lie in performance and modification, and his blog covers these topics in-depth. In addition to his own blog, Perkins is a respected voice in the automotive community and writes for various automotive publications. His insights and opinions on cars are highly sought-after.