In the Horizontally-Opposed Engine, the cylinders are horizontally-opposed, with pairs of cylinders on the left and the right. The pistons are arranged on a flat plane, giving the car a lower center of gravity for improved stability and control.

This arrangement ensures superior, balanced engine revolutions with very little vibration. Suppressing vibration not only delivers excellent riding comfort but also improves engine durability.


Lightweight, Compact Horizontally-Opposed Engine
The engine structure features a highly rigid cylinder block, and its layout makes the engine very compact. In addition, the aluminum construction of Subaru's Horizontally-Opposed Engine makes it lightweight and the low center of gravity greatly enhances performance.

2.0 TURBO Developed from the same design used in the World Rally Championship Impreza, this Horizontally-Opposed 4-cylinder Engine keeps the centre of gravity low in the car. The new weight-saving aluminum bonnet helps even more, to give flatter roadholding and even less roll in tight turns. This turbo engine is further refined for the new model. This not only improves its inherent smoothness, but also delivers better fuel economy, and ensures that our cars are able to meet even the toughest emissions regulations.

2.0 Sharing the same family characteristics as its turbocharged counterpart, this free-revving naturally-aspirated unit is more fuel efficient due to the electronic control exhaust gas re-circulation and Subaru's car improved aerodynamics. As the piston configuration is flat and Horizontally-Opposed, smooth running (and an unmistakably sporty exhaust note) is a standard feature. Again, the low centre of gravity and lightweight body components combine to make the most of this engine's performance.