[Macroni]

Can someone explain to me the benefit?

I loved it in my X5d (220hp) as it went unnoticed but hate it in my Turbo Panamera (550hp) in stop and go traffic it makes driving the car miserable. Can an engine be too powerful for it to be effective? I am beginning to think I will never use it again. Does it make the Panamera that much more efficient? Is it not a bit of an oxymoron; if you were concerned about such a gas savings would have you bought the Beast in the first place.

Pelican logic required......