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Results
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136% Freight Efficiency Improvement
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12 MPG Average
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Record 55.7% Engine Efficiency
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7,100 LB Combination Weight Reduction
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48% Aero Improvement
Features
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PACCAR MX-11 Engine
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PACCAR TX-12 Transmission
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48V Mild Hybrid System
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Center Driver
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Digital Mirror System
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Reverse Splayed Chassis
![](/media/lp2khcjj/powertrain26-copy.jpg)
PACCAR Hybrid Powertrain
The powertrain is based on a diesel platform utilizing the PACCAR MX-11 engine combined with the TX-12 transmission and a 48 volt electric motor for an efficient heavy-duty mild hybrid system.![](/media/0gdj5e4u/cfd-supertruck-v3.jpg)
Record Engine Efficiency
The Kenworth SuperTruck 2 achieved a record engine efficiency of 55.7% Brake Thermal Efficiency (BTE).![](/media/aekpu0us/panel-link-to-worlds-best-mag.jpg)
World's Best Magazine
See behind the build of the SuperTruck 2 in World's Best magazine. See More ST2![](/media/0aodn4ny/t680-and-st2.jpg)
T680
Explore the T680, Kenworth's most aerodynamic production truck. Learn More![](/media/kh5lygvr/partnerlogos-copy5.jpg)
Thank You to the U.S. Department of Energy and Our Partners
The Kenworth SuperTruck 2 is supported by the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy under award number DE-EE0008265
Kenworth wants to thank the partners under this program who contributed to its success: AVL, Eaton, the National Renewable Energy Laboratory (NREL) and Ohio State University.
Kenworth wants to thank the partners under this program who contributed to its success: AVL, Eaton, the National Renewable Energy Laboratory (NREL) and Ohio State University.