• Detroit launches new Gen 6 DD13, DD15 and DD16 engines
• Optimized technology boosts efficiency and complies with the US EPA 2027 Emissions Standards Regulation
• Latest generation ensures long-term competitiveness of Daimler Truck’s heavy-duty engines while transforming at the speed of right
• Production start: DD13 and DD15 in January 2027, DD16 to follow in January 2028 

Leinfelden-Echterdingen, Germany / Portland, Oregon, USA – Detroit, Daimler Truck North America’s powertrain brand and leading manufacturer of heavy-duty truck engines and commercial vehicle components, recently announced its new Gen 6 heavy-duty engine portfolio, comprised of the DD13, DD15 and DD16. The next evolution of its popular engines is fully compliant with the EPA’s 2027 standard and will be available for all heavy-duty Freightliner and Western Star trucks.

“Freightliner and Western Star customers depend on Detroit to operate reliably, efficiently and powerfully, and we’re honored by the trust placed in both the Detroit brand and the DD13, DD15 and DD16 engines to help navigate past transitions as well as this next one,” said David Carson, senior vice president of sales and marketing at Daimler Truck North America. “With our Gen 6 engines, we have a successor that builds on years of proven performance to be prepared for ’27 and beyond.”

Dependable and familiar technology to improve efficiency and meet stringent standards

At their core, the Detroit Gen 6 engines refine the previous generation’s design, providing confidence that the durability and reliability for which Detroit is known continue. As part of their updates, the engines deliver enhanced efficiency designed to help offset the impacts from emissions-related changes.

First announced in 2007, Detroit’s DD engine series was introduced as a clean sheet design to help fleets navigate a rapidly changing regulatory landscape without compromising reliability, efficiency or power. Following its introduction in 2007, each successive generation delivered - in 2010 (Gen 2), 2013 (Gen 3), 2016 (Gen 4) and 2021 (Gen 5) – met increasingly stringent emissions standards while continuing to provide the performance and uptime customers expect from Detroit. This continuous improvement helped to solidify the DD engine series as a leading choice across the industry. To date, there have been 1.2 million heavy-duty Detroit engines sold for both on-highway and vocational applications, delivering reliably for fleets across North America and other global markets.

Unmatched Global Scale

The Detroit Gen 6 engines represent the first product introduction from Daimler Truck’s latest evolution of its global heavy-duty diesel engine platform (HDEP). As part of the company’s technology strategy, the HDEP platform delivers a level of global scale that is unmatched in the entire commercial vehicle industry, serving all brands and regions with around 200,000 engines produced per year. With this new generation, Daimler Truck is strengthening long-term competitiveness of its heavy-duty engine while transforming at the speed of right - ensuring that customers receive the right solution in the right market at the right time. 

Nearly a century of trusted engines

All Detroit engines are manufactured in the US at the Redford, Michigan campus. Home to North American engine and component research and development for Daimler Truck North America, as well as engine, transmission and axle production, the facility employs more than 2,000 people. Since its founding in 1938, Detroit has long been a stalwart of automotive manufacturing in the area.

The Detroit Gen 6 DD13 and DD15 engines will be available beginning in January 2027, with Gen 6 DD16 production following in January 2028.

Learn more about the Detroit Gen 6 engines. 

About Detroit

Detroit Diesel Corporation, a subsidiary of Daimler Truck North America, is a single-source trucking business solution that offers mid-range and heavy-duty diesel engines, 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 located in North America.