New 2027 line also includes 48-volt technologies and systems that do not require the use of Arla 32 to reduce maintenance costs.
Daimler Truck USA announced the expansion of its engine portfolio for the 2027 lineup, integrating new Cummins options into the next generation of the Detroit family. The upgrades, which will equip trucks from the Freightliner and Western Star brands, are focused on meeting the stringent EPA and CARB emissions standards scheduled for the coming years in the United States.
The main highlight of the new line is the B6.7 Octane, Cummins’ first gasoline engine aimed at mid-range commercial applications. The engine delivers 300 hp and 91,2 kgfm, using common fuel and dispensing with the use of complex aftertreatment systems, such as diesel exhaust fluid. The manufacturer’s strategy is to offer an alternative with lower maintenance costs and greater operational simplicity, while maintaining performance equivalent to that of diesel blocks.
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For the heavy-duty segment, DTNA introduces the X10 engine, designed to replace the current L9 and X12. With powers of up to 450 hp, the new block incorporates a 48-volt electrical system — technology aimed at reducing pollutants in low load regimes. The traditional X15 has also been redesigned for long-distance applications, aiming to comply with environmental standards without compromising energy efficiency.
In parallel with the partnership with Cummins, the company detailed the sixth generation of the Detroit line (Gen 6). The new DD13 and DD15 engines, expected to go into production in 2027, bring improvements to the combustion chamber and the introduction of Selective Catalytic Pre-Reduction (pre-SCR) technology. The system allows for more efficient thermal management, which is essential for neutralizing nitrogen oxides. The DD16 model, focused on severe transportation, is expected to be launched in 2028, consolidating an offer that covers diesel, natural gas and gasoline.
