The Porsche Cayenne has a stellar motor, taught suspension, and unreal handling for a 5,000 lb. truck. The tiptronic shifters on the steering wheel are outstanding. The interior fit and finish are superb, its ergonomics are comfortable, and its driving position is firm and supportive. This truck's quality and design are German to the nth degree, which is a great thing. The navigation and stereo are both easy to use. The sound system is excellent. This vehicle has lots of usable space and the back seats are spacious. Folding the seats down could be easier though. I've had two very small problems in 14,000 miles. First, there was a rattle in the rear door which was a cable that became unfastened - easy fix by the dealer. The second was that the windshield wipers were sqeaky - they were replaced by the dealer. I have never had any mechanical issues.
The burly motor, especially in tiptronic mode. this truck flies up mountain roads, passing with ease. It handles better than most sport sedans and as well as some sports cars. Its instrument panel, navigation, and steering wheel controls are all top notch. The dual sun visors are great, I like the seat heaters.
Complain about milage? Maybe you're looking at the wrong car. It's not too bad, just not great + the cost of premium gas adds up. Oh well. The Cayenne should have an additional lighter socket for a phone charger AND a radar detector. There is a second socket behind the center console, but two up near the ashtray would be better.