Porsche uses Aisin ( Japanese, partly Toyota owned ) 8-speed ATs not ZF. Cayennes are Aisin only ( or MT ), the PDK is not suitable for towing and off-roading. The PDK in the Panamera however is from ZF ( The AT in the Panny hybrid is from Aisin )
BMW's DCT is from Getrag ( German ).
ZF makes more than transmissions, they for example also make the ARS systems that BMW uses in some models.
Last edited by solstice; 08-11-2013 at 12:52 PM..
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