Subaru has lifted the curtain on its latest powertrain innovation, revealing a new-generation hybrid system that stays true to the brand’s roots while embracing electrification. This development is part of a collaborative effort with Toyota and Mazda, aimed at exploring multiple pathways for future mobility.
At the heart of this new system is Subaru’s iconic horizontally-opposed ‘boxer’ engine, now reimagined to serve dual roles as both a generator and a drive unit. This setup, described as a series-parallel hybrid system, bears similarities to Honda’s e:HEV technology.
Unlike Subaru’s current mild-hybrid offerings in the Forester and Crosstrek, this new powertrain adopts a more integrated approach. The combustion engine, electric motor, transfer case, and transmission are all packaged together at the vehicle’s front, with a driveshaft extending to a compact rear differential to maintain Subaru’s signature all-wheel drive capability.
Tetsuo Fujinuki, Subaru’s Chief Technical Officer, emphasized the importance of retaining the flat engine configuration and all-wheel drive system, citing these as key factors in the brand’s appeal. “While flat engines might not always be the most efficient choice, they’re integral to Subaru’s identity,” Fujinuki explained.
While specific details about engine capacity and performance remain under wraps, Fujinuki revealed that the system is designed to be compatible with carbon-neutral fuels starting next year. There’s also potential for plug-in hybrid applications in the future.
Subaru’s next-gen hybrid system will utilize a transaxle for power delivery, moving away from Subaru’s traditional continuously variable transmission (CVT). Production of these transaxles is set to commence later this year at Subaru’s newly renovated Kitamoto Plant.
With working prototypes already on display, it’s likely that consumers won’t have to wait long to experience this new hybrid technology. Industry speculation suggests the system could debut globally in the facelifted Crosstrek model, possibly as soon as 2025.
Interestingly, Subaru isn’t abandoning conventional internal combustion engines entirely. The company hinted at an upcoming concept vehicle that will showcase carbon-neutral fuel technologies in a high-performance application, underlining Subaru’s commitment to exploring diverse automotive solutions for the future.
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