According to Automotive News, Subaru is set to release a new, more fuel-efficient version of its boxer four-cylinder engine. The powerplant should be available in both 2.0-liter and 2.5-liter configurations and will be able to offer up a 10-percent boost in fuel economy over its predecessors. The report doesn't detail exactly how the engine goes about gaining its new found efficiency, but it does say the changes are the first significant revision of the company's boxer architecture in two decades.

A Fuji Heavy Industries spokesperson confirmed that the new powerplant is coming, but wouldn't go so far as to say which models would benefit from the new tech. Automotive News reports that other sources claim that the thrifty four-pot will first show up in the Forester both in the U.S. and Japan, paired with a CVT gearbox. The new engine will then begin to crop up in models like the Legacy and Impreza here in the States and the Exiga minivan on Subaru's home turf.

[Source: Automotive News - sub. req.]