Originally Posted by stevent
For those with Cayenne S in the 2004-2008 models, how much is your average monthly maintenance?
A great resource for this is Excellence magazine. Every few issues, they will have a comprehensive breakdown of an older Porsche and how hard and expensive it will be to maintain. They just did this for the Cayenne recently, and it's a relatively trouble-free vehicle, but it does have certain things you have to take care of before things get out of hand. They also have a column where people write in how much they paid for a used Porsche and they give you their opinion on whether that was a good price based on the vehicle's condition.
Look on their website for info on how to order back issues. They're still in the stone ages, so expect to use stamps and write checks:
The issue you want is #188 December 2010. For Boxster shoppers, they did a similar guide in #187 November 2010. For those worried about RMS/IMS, look at #185 September 2010.
You can also look at their 987/986 buyer's guide, which is online:
Good luck! I love the 1st gen Cayennes.