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What is the fuel mileage for 6.7 Cummins?

The 6.7 Cummins diesel engine, commonly found in heavy-duty trucks, is known for its impressive power and torque. But how does it perform when it comes to fuel efficiency? Let's dive into the details of the 6.7 Cummins' fuel mileage.


Fuel Mileage Estimates for the 6.7 Cummins


The fuel mileage of the 6.7 Cummins diesel engine can vary depending on a number of factors, such as the vehicle it's installed in, driving conditions, and driving habits. However, based on industry data and real-world testing, we can provide some general estimates:



  • In a Ram 2500 or 3500 heavy-duty pickup truck, the 6.7 Cummins engine can achieve an average fuel economy of 16-20 miles per gallon (mpg) in mixed driving conditions.

  • When towing a heavy trailer, the fuel mileage of the 6.7 Cummins can drop to around 12-15 mpg.

  • In a Dodge Ram 3500 dually with the 6.7 Cummins, the average fuel economy is typically in the range of 14-18 mpg.


It's important to note that these are just general estimates, and your actual fuel mileage may vary depending on your specific driving conditions and habits.


Factors Affecting 6.7 Cummins Fuel Mileage


Several factors can influence the fuel efficiency of the 6.7 Cummins diesel engine, including:



  • Vehicle weight and load: Heavier vehicles and higher payloads or towing capacities will generally result in lower fuel mileage.

  • Driving conditions: Driving in stop-and-go traffic, on hilly terrain, or at high speeds can all impact fuel efficiency.li>
  • Driving habits: Aggressive acceleration, frequent braking, and idling can all contribute to decreased fuel mileage.

  • Engine maintenance: Proper maintenance, such as regular oil changes and air filter replacements, can help optimize the engine's performance and fuel efficiency.


By understanding these factors and adjusting your driving habits accordingly, you can help maximize the fuel efficiency of your 6.7 Cummins-powered vehicle.


Improving 6.7 Cummins Fuel Mileage


If you're looking to improve the fuel mileage of your 6.7 Cummins-equipped vehicle, here are some tips:



  • Maintain a consistent speed: Avoid rapid acceleration and braking, which can significantly reduce fuel efficiency.

  • Use cruise control: Engaging cruise control on the highway can help maintain a steady speed and improve fuel economy.

  • Reduce weight and aerodynamic drag: Remove unnecessary cargo and accessories, and consider installing aerodynamic upgrades like a tonneau cover or side skirts.

  • Keep up with maintenance: Regular oil changes, air filter replacements, and other maintenance tasks can help optimize the engine's performance and fuel efficiency.li>

By following these tips and being mindful of your driving habits, you can help maximize the fuel mileage of your 6.7 Cummins-powered vehicle.

How many miles per gallon does a 6.7 Cummins get in 2024?


6.7L Cummins® Turbo Diesel I6 Engine
This engine variant enhances the 2024 RAM 2500 gas mileage, offering about 14 mpg in the city and 17 mpg on the highway, underlining the truck's status as a fuel-efficient powerhouse. Specifications feature: 370 horsepower. 850 lb-ft of torque.



What is the life expectancy of a 6.7 Cummins?


As a short answer, a 6.7L Cummins loaded in a Dodge Ram will last between 250,000 and 350,000 miles. Cummins engines last a long time. This diesel engine is highly reliable and has high levels of output. A 5.9 liter Cummins engine can go on for about 300,000 to 400,000 miles.



Which Cummins gets the best MPG?


The 6.7L Cummins Turbo Diesel I6 offers the highest MPG at 16-21, while the 6.4L HEMI V8 and 6.4L High Output HEMI V8 offer 13-18 and 12-16 MPG, respectively.



How can I increase my 6.7 Cummins MPG?


Step 1 to fuel economy upgrades is to increase air density. The more dense air is the less fuel that is required to ignite it. Therefore, upgrading the restrictive stock intake on the 6.7 Cummins with a higher flowing performance air intake will lead to better MPG.



What is a lot of miles for a 6.7 Cummins?


These engines can typically last 300,000 to 350,000 miles, which is considered high mileage –but a well-maintained Cummins engine can reach up to 500,000 miles. It's important to keep a truck with a Cummins engine well-serviced because the truck's other parts might run down far before its engine does.



What is the best gas mileage for a Cummins?


The 6.7L Cummins Turbo Diesel I6 offers the highest MPG at 16-21, while the 6.4L HEMI V8 and 6.4L High Output HEMI V8 offer 13-18 and 12-16 MPG, respectively.



What is the fuel mileage for a 6.7 Cummins?


We towed 10,000 pounds to Utah and back (about 2500 miles) and averaged 13.2 mpg with a '22 2500 6.7L.



What is the gas mileage on a 6.7 diesel?


Somewhere around 6.7MPG with my 6.7L diesel.



How many MPG does a 2500 Cummins get?


The Ram 2500 with Cummins Diesel is known for its impressive fuel efficiency, with an average MPG of 19 city and 24 highway. This means that the Ram 2500 with Cummins Diesel can get you where you need to go without breaking the bank.



What is the gas mileage on a 6.7 Powerstroke vs 6.7 Cummins?


The fuel efficiency of both trucks varies with the vehicle's model year. With a combined rating of 16–21 MPG, the 6.7 Cummins Turbo Diesel I6 is more fuel efficient. The 6.7 Powerstroke is rated at 15-20 MPG in combined driving.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.