Fuji Heavy Industries Ltd., maker of Subaru cars, plans to unveil the world’s first horizontally-opposed 4-cyl. turbodiesel engine next month at the Geneva International Motor Show.

The compact Subaru Boxer Turbo Diesel engine is similar in size to the auto maker’s 2.0L and 2.5L gasoline-fueled 4-cyl. “boxer” engines, FHI says, noting the new mill’s rigid design and low noise and vibration characteristics allow it to operate smoothly without the need for a balance shaft.

Mated to Subaru’s proprietary Symmetrical all-wheel-drive system, the high-torque nature of the diesel will complement the added traction provided by AWD, the auto maker says.

Initially, the new turbodiesel will be offered only in Europe, starting sometime next year, with reports naming the Legacy midsize sedan as the first application.

There currently is no word on availability in other markets, including North America.

FHI says it will provide performance details, along with production specifics, at its press conference March 6.