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Subaru SI-Drive

Some Subarus are equipped with additional driver controls on automatic models that allow you to control the driving experience called SI-Drive. If you’ve ever wondered what the different modes mean, we’ll outline them below.

Subaru Outback H6 with central button to control the driving mode.
Subaru Outback H6 with driving mode selector

If you have an SI-Drive driving mode selector, it usually won’t be engaged until you choose a mode. That means the Subaru will stay in a default mode that equalizes power and fuel economy.

Intelligent Mode
If you push the knob, you’ll engage the [I] Intelligent mode. In this setting, your Subaru will change your drive settings to maximize fuel economy. It does this by opening the throttle more gradually and shifting the car more smoothly to deliver more efficient driving and reduce your Subaru’s emissions. The team here at Soobie Surgeons prefers this mode for the majority of the team, because it gives you the most comfortable ride and the only hurry we’re in is to get your car back to you!

Sport Mode
In sport mode, the throttle responds more swiftly than in intelligent mode, but still keeps the throttle and transmission settings mellow to allow for a mix of power and mileage. Sport mode is ideal for daily driving, as it allows for good highway driving and cruising down thoroughfares.

Sport Sharp (#) Mode
Pocket rocket? No, just sport sharp mode. Sport sharp allows your Subaru’s throttle to be the most responsive it can be. Between the throttle and quick shifting of the transmission, sport sharp mode gives you the most aggressive power of the three modes. Your Subaru will stay in its lower gears for a longer amount of time before shifting, so you’ll be zooming in no time. This mode is the best when you’re in the mood for a joyride, or you’re looking to accelerate quickly onto the highway.


How does your AWD work?

What makes a Subaru a Subaru? Well, the all wheel drive of course! Among many other unique features and a growing subculture, Subaru has made their name by offering standard all wheel drive on every vehicle except the BRZ. But how does it work?

In order to bring power to the rear wheels, a shaft runs from the Subaru transmission to a differential at the rear. The differential acts like its own mini transmission, with gears inside it that route power from the shaft to the wheels.

Aerial view of a rear differential showing the main drive shaft running into the differential and both axles coming out of the differential to power the wheels.
Drive shaft running to a rear differential

Some Subarus, and many other off-road or performance vehicles come equipped with a limited-slip differential or LSD. Limited-slip differentials allow power to transfer between the rear wheels, allowing for one wheel to gain more traction if the other slips or gets stuck. This results in better handling and more traction.

Cross section of the mechanical gearing of a limited-slip differential
Limited slip differential – Photo credit Aconcagua

Here we bring you the latest in news, education, and fun facts that all Subaru owners need to know