DT*: THE CONTACT STATED WHILE DRIVING 35 MPH ON NORMAL ROAD CONDITIONS, AND WHEN STATIONARY, THERE WAS A VERY DISTINCT FUME SMELL COMING FROM THE ENGINE COMPARTMENT. THE SMELL WAS NOTICEABLE AND CAME IN THROUGH THE VENTS. THERE WERE NO WARNING SIGNALS PRIOR TO THE INCIDENT. THE VEHICLE WAS TAKEN TO A DEALER SEVERAL TIMES, WHERE THEY REPLACED THE LEFT AND RIGHT CYLINDER HEAD COVER; CYLINDER HEAD…
2005 Porsche Boxster engine problems
moderate 11 complaints filed with NHTSA · avg repair $3,100
What owners are reporting 11 most recent
DT*: THE CONTACT STATED WHILE DRIVING VARIOUS SPEEDS ON NORMAL ROAD CONDITIONS OR WHEN STATIONARY, THERE WAS A SMELL OF FUEL COMING FROM THE ENGINE COMPARTMENT. THE SMELL WAS NOTICEABLE AND CAME IN THROUGH THE VENTS. THERE WERE NO WARNING SIGNALS PRIOR TO THE INCIDENT. THE VEHICLE WAS TAKEN TO A DEALER SEVERAL TIMES, WHO REPLACED THE LEFT AND RIGHT CYLINDER HEAD COVER. ALSO, THE CYLINDER HEAD …
WHILE PULLING AWAY FROM A STOP LIGHT IN LIGHT CITY TRAFFIC, ENGINE SUDDENLY HAD REDUCED POWER OUTPUT IMMEDIATELY FOLLOWED BY LOUD SOUNDS OF LOOSE METAL PARTS THROUGH OUT THE ENGINE COMPARTMENT. UPON INSPECTION BY A PORSCHE SPECIALIST, HE DETERMINED THAT THE ENGINE HAD SUFFERED INTERMEDIATE SHAFT FAILURE WHICH CAUSED CATASTROPHIC ENGINE FAILURE BY ALLOWING THE VALVES TO MAKE CONTACT WITH THE PISTON…
CATASTROPHIC ENGINE DAMAGE DUE TO INTERMEDIATE SHAFT BEARING FAILURE. THERE ARE NO SIGNS THAT THE PART WILL FAIL. THERE IS A GRINDING NOISE IN THE ENGINE AND UPON STOPPING ALL THE OIL LEAKS OUT. AS SOON AS THE NOISE IS HEARD, THE ENGINE IS IRREPARABLE DAMAGED. INSTANT, CATASTROPHIC DAMAGE. ENGINE IS A TOTAL LOSS. BEARING IS A DEFECTIVE DESIGN AND HAS BEEN REDESIGNED IN NEWER MODELS. *TR
TRAVELING 75MPH ON FREEWAY WHEN OIL & ENGINE LIGHTS CAME ON AND VEHICLE SIMULTANEOUSLY CAME TO DEAD STOP IN TRAFFIC; DIAGNOSED AS CATASTROPHIC ENGINE FAILURE BY DEALER SERVICE MGR., ENGINE REPLACED AT COST OF $17,000+. NO PRIOR WARNING. NO FAULT OF MY OWN PER SVC.MGR. 38K MILES ON 2005 VEHICLE, 3 MO OUT OF WARRANTY. MANY SIMILAR INCIDENTS REPORTED ON SEVERAL WEB SITES. SERVICE MGR REPORTED PO…
MY 2005 PORSCHE BOXSTER, 23K MI, HAD CATASTROPHIC ENGINE FAILURE AT IDLE. THE ENGINE STALLED;I WAS ABLE TO RESTART BUT A LOUD CLANGING NOISE CAME FROM ENGINE. THE CAR THEN DIED AGAIN. THE MECHANIC SAID IT WAS DUE TO AN INTERMEDIATE SHAFT (IMS) FAILURE; THE REQUIRED ENGINE REPLACEMENT IS $14K. THE MECHANIC SAID HE HAS HEARD OF SIGNIFICANT NUMBER OF IMS FAILURES (BUT PORSCHE HAS NOT NOTIFIED OWNERS)…
I WAS DRIVING ON THE INNER LANE OF THE FREEWAY AT 65MPH. THE ENGINE SUDDENLY STALLED AND THE CHECK ENGINE LIGHT STARTED FLASHING. I MANAGED TO HAVE THE CAR SLIDING TOWARD THE SHOULDER AND GET OFF FREEWAY. THE CAR WASN'T ABLE TO RESTART AGAIN. A HIGHWAY PATROL CAME BY AND HELPED TO PUSH MY CAR TO WILDER SHOULDER FOR SAFETY. THE REAR BUMPER WAS DAMAGED IN THE PROCESS. THE CAR WAS TOWED TO THE DEAL…
VEHICLE WAS 2005 PORSCHE BOXSTER. CAR ENGINE SELF-DESTRUCTED WHILE DRIVING HIGHWAY AT 70 MPH. CAUSE WAS FAILURE OF INTERMEDIARY SHAFT BEARING AT 29,000 MILES AS DETERMINED BY ENGINE DISSEMBLY. CAR HAD BEEN PROPERLY MAINTAINED AND SERVICED BY PORSCHE FACILITIES FOR ITS LIFE. INTERMEDIARY SHAFT FAILED AFTER BEARING FAILED, SENDING METAL PIECES THROUGHOUT ENGINE INCLUDING INTO OIL SUMP. TIMING BELT…
2005 PORSCHE BOXSTER. CONSUMER STATES ENGINE MADE GRINDING A SOUND AND WOULD NOT START *TGW THE CONSUMER HAD THE VEHICLE TOWED TO THE DEALER, WHERE HE WAS INFORMED THE VEHICLE NEEDED A NEW ENGINE. THE CONSUMER STATED NO ONE COULD PROVIDE AN EXPLANATION AS TO WHY A VEHICLE WITH SUCH LOW MILES WOULD NEED A NEW ENGINE. *JB
THIS IS A VERY WELL KNOW IMS FAILURE ISSUE WITH PORSCHE BOXSTER WHICH CERTAINLY CALLS FOR A RECALL FROM PORSCHE. MY 2005 ENGINE WILL NEED TO BE REPLACED FOR 20K JUST BECAUSE OF THE VERY OBVIOUS DESIGN FLAW PORSCHE HAS IN ITS M96 ENGINES. I AM PRETTY SURE THERE HAVE BEEN NUMEROUS COMPLAINTS ABOUT THIS IN PAST BUT NOBODY HAS EVER HEEDED TO IT. I SINCERELY RECOMMEND SOME ONE TO PLEASE LOOK INTO AND…
Common questions
How serious is the engine problem on the 2005 Porsche Boxster?
It's a documented issue but not catastrophic. 11 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.