2018 Ram 2500 Heavy Duty 4×4 – 6.7L Cummins Turbo Diesel Mega Cab. This 2018 Ram 2500 Heavy Duty 4×4 delivers the legendary power and capability that serious work trucks are built for. Under the hood sits the proven 6.7L Cummins turbo-diesel inline-six, producing massive low-end torque that makes towing and hauling feel effortless. Whether you’re pulling a heavy trailer, carrying a full payload, or navigating tough job-site terrain, this truck is engineered to handle it with confidence and authority. Owners appreciate the Ram’s surprisingly comfortable ride for a heavy-duty pickup, thanks to its coil-spring rear suspension, along with a spacious, well-built cabin and the peace of mind that comes with Cummins durability. Real-world fuel economy typically falls in the 14–16 MPG combined range, which is strong for a truck of this size and capability. This is a true workhorse that still feels refined enough for daily driving. Top Highlights
6.7L Cummins Turbo Diesel – exceptional torque and proven reliability
True 4×4 Heavy Duty capability with high towing and payload ratings
Comfortable ride quality uncommon in the HD class
Strong real-world fuel economy for a diesel HD truck
