The rear of the Panamera is too round and aesthetically it needs something to balance the bulky shape.

The ducktail adds some needed angularity to the shape. As a functional appendage it may be unnecessary (a big folding wing already exists) and a bit odd on a limousine but appearance-wise it helps. The direct rear view is better with the ducktail. Also the side view is improved because the large bulbous rear slope is divided.

I hope Porsche address the bulky rear issue by adding some angles to the design (see the 991 horizontal line at the back to balance the larger butt), when facelift time comes. 


--

"Form follows function"