Subaru WRX & WRX STI Manuals 2011 Impreza WRX & WRX STI Owner's Manual | Page 290

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Starting and operating

SI-DRIVE (STI)
SI-DRIVE (SUBARU Intelligent Drive)
works to maximize engine performance,
control and efficiency.
This system consists of three modes:
Intelligent (I), Sport (S), and Sport Sharp
(S#). By adjusting the SI-DRIVE selector,
the character of the power unit changes.

This is ideal for around-town driving and
situations that do not require full power
output. It provides better control in difficult
driving conditions, such as slippery roads
or loose surfaces, due to gentler throttle
response.

& Sport (S) mode
! For all-around performance driving

& Intelligent (I) mode
! For smooth, efficient performance
driving

When Intelligent (I) mode is selected, a
shift-up indicator “ ” on the combination
meter will blink to signal the best time to
shift gears for maximum fuel efficiency.

The Intelligent (I) mode provides wellbalanced performance with greater fuel
efficiency and smooth driveability without
stress. Power delivery is moderate during
acceleration for maximum fuel efficiency.

The Sport (S) mode provides the engine
power desired by those who want to make
the driving experience their own personal
adventure.
The linear acceleration characteristic of
this versatile mode is ideal for normal
driving use.