I have an 04 Boxster that had confirmed IMS failure last week at 58K miles. Dealer employees, including service managers, have admitted to me that they have a significant number of IMS failures in this engine, and didn’t deny that it should have been a recall. I didn’t know of this defect until it (probably) happened to me, and feel angry that Porsche sold me a car without revealing a fatal design flaw (sealed bearing with seal that fails in normal use, then relying on inadequate lubrication from crankcase oil splash).
When I called Porsche (1-800 Porsche), I was told there was no recall for the IMS defect because “the government orders recalls and they didn’t order a recall” for the IMS issue. Recalls are triggered by complaints to the NHTSA – not very many complaints, no recall. NHTSA complaints and investigations can be researched at their website:
http://www.safercar.gov/Vehicle+Owners . Between MY 2000 and 2005 there were only 6 IMS failures reported withe std or S Boxsters. Brief internet searches reveal that the actual failure rate is certainly much higher than these numbers would suggest. Complaints can easily be filed at the NHTSA website. If everyone with IMS failures went to the NHTSA website and filed a complaint, perhaps an investigation and thus a recall might be triggered. I’m not sure if a recall could be ordered for cars this old, but at least the relevant government agency should adequately notified. If the government took action, Porsche would be forced to respond.