Si-Drive (Wrx Sti); Intelligent (I) Mode; Sport (S) Mode - Subaru 2008 Impreza Owner's Manual

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Starting and operating

SI-DRIVE (WRX 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.
& Intelligent (I) mode
For smooth, efficient performance driv-
ing
The Intelligent (I) mode provides well-
balanced performance with greater fuel
efficiency and smooth driveability without
stress. Power delivery is moderate during
acceleration for maximum fuel efficiency.
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.
When Intelligent (I) mode is selected, a
shift-up indicator " " in the tachometer
will blink to signal the best time to shift
gears for maximum fuel efficiency.
& Sport (S) mode
For all-around performance driving
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.