Subaru offers three different Symmetrical All-Wheel Drive systems in the 2010 Subaru Legacy line, each tailored to the engine and type of transmission. In Legacy 2.5i models equipped with the 6-speed manual transmission, the AWD system uses a viscous-coupling locking center differential to distribute power 50/50 front to rear. Slippage at either set of wheels will send more power to the opposite set.

Subaru Legacy 2.5i models equipped with the Lineartronic™ CVT use an electronically managed continuously variable transfer clutch to actively control power distribution in response to driving conditions.

Subaru Legacy 3.6R models exclusively feature advanced Variable Torque Distribution (VTD) All-Wheel Drive with a 5-speed automatic transmission. A planetary center differential works with an electronically controlled continuously variable hydraulic transfer clutch to manage power distribution. The VTD system normally sends more power to the rear wheels to enhance handling agility, and it continuously adjusts power distribution in response to driving and road conditions.