I bought my 2004 2.7 almost a year and a half ago, and I have taken it to the dealer for work [under warranty, thankfully] several times. I just picked it up from the dealer and thought I would share the issues it has had, since I haven't seen these posted. Well, some in bits and pieces but no clear reports.
1) The liner on the soft top separated from the cover. Very weird. All you do is push a button to put it up or down, so I have no clue how that became stressed and separated at the front. Anyone else experience this? They reinserted the liner, but it makes a lot of creaky racket.
Very sad about the noise.
2) Left rear wheel bearings were replaced. I think I saw that out here as someone else's experience, too.
3) Condensation in the trunk compartment in the area where you check the oil and put in wiper fluid. [Not a mechanic... can you tell?] It turned out to be a faulty gasket at the coolant bleeder valve.
4) A rattling in the left driver side of the engine. Someone on this forum described loose coins but mine sounds more like bolts bouncing around. Quite scary. This remains undiagnosed as it is not reproducable on demand. Actually, I haven't heard it in a while. Maybe I 'drove it out'.
This is a young car and Porsche has a quality reputation, so I am miffed that I have had significant problems.