"I bought this certified used 2005 V-6 Cayenne in 2007. Driven by the wife of an MD (according to service records). All services done at the local Porsche dealership. I now have 56,000 miles on it and love it. Quiet on the highway. Ultra stable in sand, mud, snow, and smooth as silk with a heavy load. No squeaks, rattles, or buzzes. Not too big/not too small. Lots of room for 4 large adults on a longer trip. No real problems with anything. Goes through a set of tires every 25,000(ish) miles.
Only negatives - wish I'd bought the V-8 for power as the V-6 is a bit sluggish off of the line. Hates stop-and-go traffic - has a tendency to "buck" when chugging along. At cruising speeds, no problems keeping up (or beating) the pace of traffic. I get 16mpg in city driving and 21-22mpg on the highway. Will run on cheap gas but prefers premium (same gas mileage but better performance with premium). Generally ugly appearance seems to intimidate slower drivers on the road so they get out of your way. Once out of warranty you will want to take it to a non-Porsche shop for service as Porsche charges outrageous prices for parts and labor. I will seriously consider trading this in (down the road) on the new hybrid Cayenne or on a Cayenne GTS. Would love the Cayenne Turbo but prices are rather stiff for that beast."
"The turbo S is a blast. cant keep my foot off the gas. have owned all versions except the 6 cyl. turbo and turbo s are very fun to drive. gas and tires are a bummer but who cares with 520bhp and 0-60 under 5 seconds."
"I bought this SUV (2005 Cayenne Turbo) when it was four years old with 45K miles and it now has 72K miles after 4 1/2 years owning it. Spectacular SUV to own.. Faassast, nimble and definitely a Porsche... You WILL get noticed in this vehicle.. I have a triple black with 20" TechArt Wheels.. Very reliable (knock on wood ;-).. have only replaced the basics and like all Premium brands, the maintenance can get pretty pricey - but we all know that going in right? Only drawback is mileage.. I live in the Chicago burbs and I barely get 13 MPG of mostly suburban driving. Overall I highly recommend this SUV.. buy one!!!"