With its active sport differential, Audi elevates the road dynamics of cars with quattro permanent four-wheel drive to a new level. An innovative regulating system distributes torque from the engine in continuously variable proportions between the rear wheels. This greatly enhances agility, driving pleasure and active driving safety. The controlled power flow enables the car to take corners even more directly and responsively, and to retain its directional stability considerably longer. Understeer becomes a thing of the past. This new high-tech device from the inventors of quattro permanent four-wheel drive will be available from 2008 onwards. Full Story
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