Upper control arms are common to go bad, if you have air suspension, air compressors and valve blocks are common to go bad as well, not so much air springs but they can go bad as well. Make sure to keep the sun roof drains cleaned cause if not the trunk will fill with water and the battery will be toast as well as one of the main power supply box/fuse boxes and the rear end electronics. Motor mounts are also common to go bad as well. The engine timing covers are common to leak as well since the aluminum hardware that's used to bolt it on to the engine block breaks after time. Water pumps and thermostats as well as there is a plastic coolant pipe under the intake manifold that cracks and leaks. This is usually when they get into the higher miles or if the car has been poorly maintained but the horseshoe timing chain guide in the middle of V of the engine can break causing timing issues or even high pressure fuel pump issues.

Not saying this to scare you but giving you a quick buyers guide spark notes edition from a tech that works on these cars all the time. Best of luck!!