There are 2 stored owner reports matching the engine leading-label group for the 2004 Porsche Boxster in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)THE INTERMEDIATE SHAFT BEARING WHEN OUT AND SPREAD METAL SHAVING THROUGHOUT THE ENGINE. THIS CAUSED A CATASTROPHIC ENGINE FAILURE. I HAVE TO HAVE THE CAR TOWED TO THE MECHANIC AND WILL HAVE TO HAVE AN ENGINE REBUILD. THE CAR HAS BEEN SERVICE ACCORDING TO THE COMPANY PROVIDED SERVICE MANUAL. I CALLED PORSCHE USA TO SEE IF THEY WOUDL DO ANYTHING ABOUT THE FAILURE, SINCE THIS HAS BEEN A DOCUMENTED PROBLEM WITH CERTAIN PORSCHES, BUT THE COMPANY WOULD NOT HELP. *TT
2004 PORSCHE BOXSTER, 58-60K MI, HAD CATASTROPHIC ENGINE FAILURE AT 10 MI/HR. ENGINE STALLED; WAS ABLE TO RESTART AND DRIVE A FEW FEET, BUT BADLY MISSING. LOUD CLANGING NOISE FROM ENGINE. NO SMOKE. OIL DRAINED FROM CAR WHEN TILTED ON TOWTRUCK. DEALER FOUND INTERMEDIATE SHAFT (IMS) FAILURE; REQUIRED ENGINE REPLACEMENT AT $18K. DEALER SAID THEY HAD SEEN A SIGNIFICANT NUMBER OF IMS FAILURES (BUT PORSCHE HAS NOT NOTIFIED OWNERS). NO INJURIES, BUT CERTAINLY ENGINE FAILURE LIKE THIS COULD HAVE SERIOUS CONSEQUENCES AT FREEWAY SPEEDS. PORSCHE FORUMS ON INTERNET SHOW FREQUENCY OF FAILURES FROM THIS DEFECT (POORLY DESIGNED BEARING ASSEMBLY ON IMS) IS VERY HIGH, AS MUCH AS 8-11% IN ONE FORUM POLL. DEFECT FOUND IN MY97-08. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.