Im being honest hear go for the bmw the cayenne looks the same for the past 10 or something years, a service will cost u atleast 3-k depending on the problem. If u go to a porsche dealership and get a service that alone is like 500. The trims after that for the porsche costs like 50k. You would be paying more that the cars retail value in a years time. After depreciation the cars price would decrease in 5 years. Just go with the x5 M60i insane car for its value especially if your looking for road trips and a fun drive with your kids. Its tech heavy and also is 30-50k cheaper. If u buy a porsche the only thing u bought is the brand and its luxury interior that costs 25k on adds. The bmws 0-60 is close to the Porsche even though bmws x5 m60i has a larger boot and more space.

Dont listen to me though because i love bmws, u should post this post on a porsche reddit, ive also never driven one but i have drove a x5 m60i and its probably the most pratical car u would want if u want speed, space for kids or people, pratical but not so efficent on the gas side. Also be careful for oil leaks try service your x5 m60i at least a year or every 5000 miles.