Proven Ways to Boost Your Ram Truck's Fuel Efficiency

Recent Trends in Full-Size Truck Efficiency

Over the past few model years, Ram truck owners have increasingly focused on fuel economy as fuel prices fluctuate and environmental considerations gain attention. Automakers have responded with mild-hybrid systems, cylinder deactivation (e.g., eTorque on V6 and V8 engines), and aerodynamic refinements. Aftermarket parts such as tonneau covers and tuners also remain popular among owners seeking marginal gains.

Background: Engineering Fundamentals

Ram’s light-duty trucks (1500 series) use multi-displacement technology that shuts down cylinders under light load, reducing fuel consumption by an estimated 5–12% on highway cycles. The 3.6L Pentastar V6 with eTorque and the 5.7L HEMI V8 with eTorque each offer improved stop-start response and regenerative braking. Heavy-duty models (2500/3500) rely on efficient diesel powertrains—specifically the 6.7L Cummins—which deliver superior torque and highway mpg relative to gasoline equivalents, though city figures remain lower.

User Concerns: Real-World Mileage Gaps

• City vs. highway variance: Owners often see a 20–30% drop from official estimates in stop-and-go traffic, especially with the HEMI V8.
• Towing penalties: Under moderate to heavy towing, fuel economy can drop by 40–50%, making trip planning essential.
• Aftermarket reliability: Performance tuners and cold-air intakes sometimes void warranties or trigger check-engine lights without certified calibration.
• Driving habits: Aggressive acceleration and excessive idling are consistently cited as the largest controllable factors affecting mpg.

Likely Impact: Practical Gains from Common Approaches

• Tire pressure and alignment: Maintaining manufacturer-recommended pressure (typically 36–45 psi) can improve highway mpg by 1–2 mpg.
• Reduced payload/cab weight: Removing unnecessary gear from the bed and cab reduces rolling resistance; a 100-pound reduction may yield ~0.5 mpg improvement.
• Bed covers: Hard tonneau covers reduce aerodynamic drag; owners report gains of 0.5–1.5 mpg at highway speeds.
• Eco-mode and cruise control: Using the truck’s Eco mode (where available) and steady cruise control on flat terrain can add 1–2 mpg over mixed driving.
• Hybrid and diesel options: Choosing the 3.6L eTorque over the HEMI can save 2–4 mpg in combined driving, while the Cummins diesel in HD models often achieves 18–22 mpg unloaded highway.

What to Watch Next

Ram’s transition to electrification—including the Ram 1500 Rev and forthcoming range-extended Ramcharger—will likely redefine efficiency benchmarks. Meanwhile, aftermarket manufacturers are developing plug-and-play hybrid assist kits tailored for 1500-series trucks. Regulatory pressure for reduced fleet emissions may also push Ram to simplify powertrain offerings, potentially phasing out less efficient V8 options. Owners should monitor factory recalibration campaigns and software updates that may enhance eTorque performance without hardware changes.