I had a choice for 2004 cayenne turbo or 2006 cayenne S and both had almost same mileage and price tag. I checked the recall history and test drive both cars. and I went with 06. Love it. Rear differential seems problem but dealer do not find anything wrong..so I am not sure if it is problem or not..Once in while I see some noise around30-35 miles but when we take the car to dealer, it goes away. I would recommend strongly to go with 06 model which has all bugs worked out and no recall history.