Market Update
Cummins launches the new MY 2025 6.7L engine for RAM trucks
Improved engine and vehicle technologies to deliver better performance, transient response and maintenance
Source: Cummins, Stellantis
Background
Cummins and Stellantis have announced the launch of a new 2025 6.7L engine paired with the RAM lineup of pickup and chassis cab heavy-duty trucks. The engine is certified to EPA and California standards.
Improvements (engine and vehicle)
- Increased power (430 hp vs. 420 for MY 2021) for pickups
- Pickup: 36,610 pounds of towing capability
- New 8-speed transmission
- Improved acceleration and transient response at high loads
- Pickup: 0 – 60 mph in 6.9 seconds vs 8.0 seconds
- New airflow management design for improved emissions
- Larger intake/exhaust valves for improved port flow
- New high-pressure fuel delivery system and new fuel pump
- New VGT delivers intelligent condition-based power output
- Cold-start management improved with advanced glow plugs
- Improved serviceability
- Certified to US EPA and CARB standards
What we don’t know (yet)
No details have been released yet on the emissions control system. Likely it retains the previous generation system (DOC, DPF, SCR, AmOx catalyst) and that it does not certify to MY 2024 California low NOx standards – or it would have been called out.
We have summarized the recently announced low NOx engines for long-haul trucks separately (link below) and will report on the details here when available. Sign up below to stay informed.
Related reading:
Full Report Available to MobilityNotes Members
In 2025, MobilityNotes will have a paid members-only section, with expanded downloadable content, webinars, white papers, international coverage, and more.
For now, subscribe to the free monthly newsletter below.
Sign up here to receive such summaries and a monthly newsletter highlighting the latest developments in transport decarbonization
Recent Posts
IRENA Renewable Energy Capacity Statistics 2025
According to the latest report from IRENA, 2024 saw the largest increase in renewable capacity, accounting for 92.5% of overall power additions.
CO2 Emissions Performance of Heavy-Duty Vehicles in Europe – 2022 Results
The European Commission has published the official 2022 CO2 emission results for heavy-duty vehicles. Many OEMs are ahead of the targets and have gained credits, while others have their work cut out as we approach the 2025 target.
A summary of the SAE 2025 OBD Conference held in Porto, Portugal
A summary of the SAE 2025 OBD Conference held in Porto, Portugal, provided by MAHLE Powertrain.
