The standard model will be powered by a modified version of the 4.5-litre V8 used in the Porsche Cayenne, while there are reports of a cheaper version powered by 3.6-litre V6.
Rumours floating around the internet also suggest a Hybrid version is in the works (alongside a Hybrid Cayenne). There is also a possibility the V12 diesel engine from the Audi Q7 could one day find itself in the Panamera.
You can find another video of the car here. It is a Porsche, but it really doesn't stand out the way we thought it would.