S3 quattro®: The Haldex clutch
Featured on the Audi S3 quattro, the latest generation of the Haldex clutch ensures that engine power is permanently distributed between the front and rear axles as and when required. The general principle behind the Haldex clutch is it always allocates the driving forces to the axle with the better traction. For instance, if the front wheels begin to lose traction, it channels power to the rear.
