Most (if not all) of these D5 engines have died when a pulley on the serpentine belt seized, the belt wrapped around the crank pulley, the cambelt jumped teeth and the engine was busted. It's almost a classic scenario.
If it's a noisy pulley it needs adressed urgently. Usually we remove the serpentine belt and inspect every pulley by hand (all of them). The a/c pulley may require just a bearing, the alternator pulley may need a replacement alternator (used is cheaper), don't use any cheap brands for replacements.
Good to have the timing belt and water pump inspected as well, if the owner put cheap parts, it can fail well before the next replacement interval
Also inspect the engine mounts
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