The Panamera does
not come with a manual transmission in the USA. It comes with the "Porsche Doppelkupplung dual-clutch transmission" in all engine configurations.
Say that three times fast.
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Current inventory:
G12 740i
G80 M3 on order
Past: E24,E28(3),E34,E36,E37,E38(2),E39(4),E46,E89,E92 (obviously),F01,F06,F10,F30,F87,G12,G30(2),G82(2), G29 Zupra