About 240k now on my '08 6 cylinder. Have only had to fix a few items for the 100k plus miles I have owned it.
Had trans valve chest rebuilt after initial purchase 130k ish due to hard shift in a gear or two... high pressure fuel pump at around 190k.... Replaced one radiator fan at about 190k... replaced original battery about 2 years ago... repaired one flex pipe near exhaust manifold at about 200k... Replaced air/oil separator at about 225k
Maintenance wise.
Oil changes, Transfer case oil change a couple times with Ravenol, Trans fluid change once... due again soon. Brake pads and rotors changed twice over entire ownership. Just recently changed front and rear original diff oil and replaced all 4 original shocks/springs with cheap aftermarket, lifted it a couple inches and added new larger tires. It is my daily driver for work and with the new tires and shocks, I recently made the decision to continue driving it for several more years vs dumping it for something newer. Still drives nice and interior is still nice looking although I now have a few small door dings and car could use a good buffing session.
Wife's 2013 6 cylinder Cayenne has a bit over 100k and has been trouble free so far with only work being tires and brake pads once.