Detroit DD15 Gen 5 Engine Hits More than One Billion Road Miles


DETROIT – Nov. 18, 2021 – After beginning production at the start of the year, the updated Detroit DD15 Gen 5 engines have accumulated more than one billion cumulative road miles to date.

“Reaching more than one billion miles in less than one year of service is not only an impressive milestone, but a true testament to the performance of the DD15 Gen 5 engine,” said Admir Kreso, chief engineer, Daimler Truck Powertrain. “Our customers have the confidence to put the DD15 Gen 5 to the test -- with great success.”  

“The award-winning DD15 Gen 5 engine is a key part of our ability to provide highly reliable service to our customers. The DD15 platform has been a go-to for our operations for years now and the new platform has exceeded our expectations of up-time, DPF health and overall running costs,” said Max Fuller, executive chairman and former CEO of U.S. Xpress.

“Our commitment to the global community to be a green transportation solution provider is closely aligned with the efficiency gains of the DD15 Gen 5 engine. The highly efficient new engine means less hydrocarbons consumed, and an overall smaller carbon footprint for our operations,” said Rob Reich, chief administration officer for Schneider National.

Available for Freightliner Cascadia and Western Star 49X trucks, the DD15 Gen 5 engine was completely updated from the previous generation with leading-edge technologies to deliver industry-leading fuel efficiency, durability and performance.

The DD15 Gen 5 was built with the same foundational excellence using Detroit’s heavy-duty engine platform (HDEP), but with more than 50 percent new components for less complexity. Featuring ultra-high compression ratios paired with a new swirl piston design that make combustion even better, the DD15 Gen 5 can achieve more than a three percent improvement in fuel efficiency. Additional performance-related achievements include increased downspeeding and a ball bearing simple geometry turbo that provides quicker response.

The DD15 Gen 5 is part of the comprehensive portfolio of Detroit solutions that are purposefully designed to complement one another to deliver the highest level of performance. A fully integrated powertrain from Detroit – which includes the Detroit DT12 automated manual transmission, Detroit Axles, Detroit Assurance 5.0 Suite of Safety Systems and the Detroit Connect suite of connected vehicle services – provides the most powerful and technologically-advanced solutions on the road today.

For more information, go to

About Detroit

Detroit® is a single-source trucking business solution that offers mid-range and heavy-duty diesel engines, ePowertrains, transmissions, axles, safety systems, and connected vehicle services for on-highway and vocational commercial markets. Detroit products are sold and serviced through a network of hundreds of locations in North America. For more information, or to find the nearest Detroit location, visit Detroit is a brand of Detroit Diesel Corporation, a subsidiary of Daimler Truck North America.



Download Lo-Res File Download Med-Res File Download High-Res File

Detroit Connect Portal

The Detroit™ Connect portal is easy-to-use, one-stop-shop for all vehicle performance data gathered, transmitted and analyzed by Detroit Connect.  The portal gives you access to insights delivered by  Detroit Connect Virtual Technician℠. The Detroit Connect portal will also give you access to new features, such as Remote Updates, and Analytics, available late 2017.

Detroit connect portal login


All DDCSN content has been migrated to our DTNAConnect web portal. All information previously on the DDCSN is now on DTNAConnect. We have created a quick reference guide to help you locate the migrated content on DTNAConnect. Existing DDCSN login credentials will also work with DTNAConnect. Please work with your security administrators for login or content issues. If you do encounter any technical issues, please contact the Software Support Center at 855-639-8680 or


DTNA Connect Portal

DTNA Connect is the starting point for working with all brands and franchises that fall under the Daimler Truck North America umbrella: Detroit, Thomas Built Buses, SelecTrucks, Sterling, Freightliner, and Western Star. Here, you can access the full spectrum of online applications, resources and tools you need. Whether you use DTNA online resources to complete repairs, purchase parts, submit warranty claims, spec new vehicles or track the status of your truck orders, DTNAConnect streamlines the tasks and activities that are part of your daily work routine.

DTNA Connect Portal Login