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Bought a 2002 Boxster S with 115,000 miles this summer. It was obvious that the PO had replaced the water pump recently, but there was no way to know if he did it proactively or after failure.
Among other issues, the car had some small oil leaks from the oil cooler that sits above the engine. It's a small heat exchanger with engine oil on one side and coolant on the other. When the cooler was removed to replace the O-rings, inside the coolant section were half a dozen chunks of water pump impeller. Clearly, the pump had at some point suffered a failure - only then was it replaced.
Morals of the story - yes, they can and do fail - and if they do, look inside the oil cooler for impeller parts.
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2004 Boxster S - 50th Anniversary of the 550 Spyder
2000 Carrera Cabriolet
2016 BMW R1200R
1971 BMW R75/5
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