Subaru chose to continue their longstanding use of the boxer engine in the Impreza.
While the Tiara series were basically traditional boxer engines, they did have some unique features.
The traditional turbocharged boxer engine in the 956 was already tested in the 1981 version of the Group 6 936.
Both motorcycles feature a 1,170 cc, 2-cylinder boxer engine with 4-valves per cylinder.
It was the first production Subaru to use a boxer engine.
The flat-6 boxer engine (180 ) is only slightly wider than the 120 V6, and it is fully balanced.
It is unique in its class for offering all wheel drive as a standard feature, and Subaru's traditional boxer engine.
In 2004, bikes with the opposed-twin-cylinder "boxer" engine were also revamped.
The switch to water-cooling for the boxer engines was made mid-year in 1983.
The Legacy was powered by a longitudinally mounted boxer engine, giving it a low center of gravity.