The Subaru Boxer engine is a type of internal combustion engine characterized by its horizontally opposed cylinder layout. This design allows the engine's pistons to move in and out in a horizontal manner, which helps to lower the vehicle's center of gravity. As a result, cars equipped with this engine often have improved stability and handling, especially during cornering. Another key feature of the Boxer engine is its compact size, which allows for more efficient use of space in the vehicle. This engine type is commonly found in many Subaru models, contributing to their reputation for reliability and performance. The unique design also helps to reduce vibrations, leading to a smoother driving experience.