SI-DRIVE
To drive how you want to drive
Subaru's renowned Symmetrical
AWD platform and its core tenets of horizontal symmetry and low center of
gravity are now available in their full potential in a hybrid package. The
system features compact, high-performance motors and batteries mated to the Symmetrical
AWD. The drive motor has been built into Subaru's "Lineartronic(*1)"
next-generation transmission system positioned low in the car's body. The
Hybrid Lineartronic has been newly developed while retaining the inherent
benefits of the Lineartronic system, as well as optimizing each and every
component and improving fuel economy. A Boxer Engine has also been specially
engineered to suit the hybrid platform, featuring the Subaru Boxer Engine with
a modified compression ratio and reduced friction levels to deliver better fuel
economy and operate with less noise. Fuel efficiency on the road is even better
with "SI-DRIVE(*2)" and "ECO Cruise Control(*3)" functions designed for optimum
control to suit the driving conditions. The hybrid platform not only delivers
outstanding fuel efficiency and impressive performance, but also brings a
well-balanced design to all aspects of the car, including the driving power,
interior comfort and ease-of-use that Subaru is famous for.
 · Intelligent Mode SI-DRIVE activates Intelligent Mode for immediate driving response and more environmentally friendly performance. Throttle mapping balances smoothness and efficiency for an enhanced level of control. |  · Sport Mode Sport mode delivers smooth engine performance at any driving speed. The effect is an immediate linear response that brings to life the refined, torque-rich response. | Sport M  ode · Sport Sharp Mode Sport mode delivers
smooth engine performance at any driving speed. The effect is an immediate
linear response that brings to life the refined, torque-rich response. |
Multi-mode DDC
The Driver's Control Centre Differential (DCCD) allows the center differential locking of the WRX STI to be dialed in and adjust its handling. It adjusts both an electromagnetic multi-plate transfer clutch and mechanical locking of a Limited Slip Differential (LSD) to distribute torque to the front and rear wheels. Auto Mode identifies the ideal power distribution for changing conditions, whilst Auto [+] keeps more power up front for increased traction. Auto [-] transfers more power to the rear for tighter cornering, and the six-step Manual Mode locks in the driver's favorite handling characteristics.
