How All Four Of Subaru's AWD Systems Work What's The Best AWD System - https://youtu.be/jm-_Ncjunuc Subscribe for new videos every Wednesday! - https://goo.gl/VZstk7 Subaru currently has four different AWD systems: 1. Viscous Coupling Center Differential AWD 2. Active Torque Split AWD 3. Variable Torque Distribution AWD 4. Driver Controlled Center Differential (DCCD) AWD Descriptions Below From The Following Link: https://www.subaru.ca/WebPage.aspx?WebSiteID=282