[Aurel]

2008 Cayenne base which is new to me. I got it with 112,000 miles, put an extra 3,000 miles on it. Here is the issue: the gear shifting is is very rough when it upshifts with no load, in slow moving traffic. It feels like shifting without using the clutch, if it was a manual transmission. I am thinking it may be caused by some drive shaft issue. My other hypothesis is the ATF needs to be changed. Which is it? Has anyone else experienced something similar? The issue only occurs wilth little or no load on the transmission, in eco mode. No problem in sport mode.