Can You Get 30 MPG With a 6.7 Cummins?

The 6.7 Cummins engine has long been hailed as a powerhouse among diesel engines, known for it’s impressive torque, durability, and overall performance. One question that often arises among truck enthusiasts is whether it’s possible to achieve a fuel economy of 30 miles per gallon (mpg) with the 6.7 Cummins. While this seems like an ambitious goal considering the size and power of this engine, various factors such as driving habits, vehicle modifications, and terrain can significantly impact fuel efficiency.

How Many Miles Does the 6.7 Cummins Last?

The 6.7 Cummins diesel engine is renowned for it’s durability and longevity. With proper care and maintenance, these engines can easily reach and even surpass the 300,000-mile mark. In fact, many Cummins owners have reported their engines running smoothly well beyond this milestone.

The engines design incorporates heavy-duty components, such as a cast-iron block and cylinder head, forged steel crankshaft, and pistons with an advanced cooling gallery. This sturdy architecture ensures that the engine can withstand the stresses of high-mileage operation.

Regular maintenance is crucial for ensuring the longevity of the 6.7 Cummins. This includes routine oil and filter changes, as well as regular inspections of vital engine components such as the fuel system, cooling system, and turbocharger. By following the manufacturers recommended maintenance schedule, owners can ensure that their engines remain in peak condition and can last for many years.

Many Cummins owners choose to enhance their engines power and torque output by adding aftermarket tuning, larger turbochargers, or upgraded fuel systems. These upgrades, when done correctly, can improve engine performance without compromising reliability or longevity.

With it’s robust construction, efficient design, and proper maintenance, it can easily surpass 300,000 miles and continue running smoothly for many more. Whether used for heavy towing, off-roading, or everyday commuting, this engine proves to be a reliable and long-lasting powerhouse.

Now that we’ve an idea of the average fuel economy for the 2017 Ram 2500 with the 6.7 Cummins engine, let’s explore some factors that could affect it’s gas mileage.

What Is the Gas Mileage on a 2017 Ram 2500 6.7 Cummins?

This data is based on real-world reports submitted by Ram 2500 owners who track their fuel consumption. The fuel economy of the Ram 2500 with the 6.7 Cummins engine can vary depending on various factors such as driving habits, terrain, and load. However, provides a general overview of the average fuel efficiency achieved by these vehicles.

It’s important to note that the reported 15.7 mpg average is an aggregate of different driving conditions, including both city and highway driving. Some users may obtain higher mileage numbers, while others may achieve slightly lower numbers depending on their individual circumstances. The Cummins engine is known for it’s power and towing capabilities, which can be significant factors in fuel consumption.

While this average fuel economy rating can give potential buyers a general idea of what to expect, individual experiences may vary. To obtain more accurate information, it’s recommended to refer to the official EPA ratings for the 2017 Ram 2500 and consult with the dealership or current owners for their real-life experiences with fuel consumption.

Tips for Improving Fuel Efficiency in a Ram 2500 With a 6.7 Cummins Engine

  • Drive at a constant speed on highways
  • Avoid aggressive acceleration and braking
  • Keep your tires properly inflated
  • Remove excess weight from your vehicle
  • Use cruise control on long drives
  • Maintain your vehicle’s engine and filters
  • Avoid idling for long periods
  • Plan your routes to minimize stop-and-go traffic
  • Consider using synthetic motor oil
  • Avoid unnecessary use of electrical accessories


However, with advancements in technology and the concerted efforts of manufacturers and drivers alike, it’s possible that even greater fuel efficiency can be achieved in the future. As the automotive industry continues to innovate, it’s crucial to explore ways to maximize fuel efficiency while considering the performance aspects of vehicles, ensuring a well-rounded and sustainable driving experience for all.

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