It actively distributes torque between the rear wheels in order to further boost stability and grip at the vehicle's limits of handling. (ausmotive.com)
Power is sent to all four wheels using an intelligent AWD system with an active twin clutch that can precisely transfer torque between the rear wheels for more refined and efficient performance. (gmauthority.com)
An optional sport rear differential varies torque between the rear wheels, allowing the S4's driver to confidently power through any corner. (automobilemag.com)