2004 Porsche 911 Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2004 Porsche 911, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Engine880.0%
- Body & structure110.0%
- Powertrain (other)110.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
Yesterday as I was driving in freeway, my friend was following me from behind, he noticed smoke and coolant leaking making his car's windshield dirty. So we stopped at gas station and noticed good amount of coolant leakage from underneath which make the back of the car and tires big mess. I noticed, before my friend's call, the handling and grip of the car was little off, I didn't know why but then I realized leaking made the tires slippery. Tow the car to my house and just wanted to report this. It seems lot of people complain about this issue when I started reading about it last night.
THE M96 MOTOR SUPPLIED WITH THIS VEHICLE LINE HAS HAD THE FOLLOWING PROBLEMS. ENGINE BLOCK LEAKS THE BLOCK IS POROUS. RESLEEVED CYLINDERS WERE MAKER FIX ,THE SLEEVES MOVED CAUSING ENGINE DESTRUCTION. A MAIN CRANKSHAFT BEARING WAS DESIGNED OUT. ALLOWING THE CRANKSHAFT TO MOVE FRT TO BACK AND WITH GRAVITY CAUSING A FAILURE OF THE REAR MAIN SEAL COULD NOT FIX IF CRANK HAD MOVED MORE THAN A FEW DEGREES FROM ORIG SPEC.PRIMARY PROBLEM IMS( INTERMEDIATE SHAFT) FAILURE. RESULT, COMPLETE DESTRUCTION OF MOTOR. NO FIX FROM MANUFACTURE. AFTER MARKET ONLY SUPPLY. OVER TEN THOUSAND AFTER MARKET REPAIRS DONE.CONSERVATIVE APX COST $,3000 I HAVE MUCH MORE EVIDENCE. *TR
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
THE EVENT HAPPENED IN 2008. PURCHASED PORSCHE GT 3 FROM PORSCHE DEALER IN 2006. ACCELERATING ONTO A LIMITED ACCESS HIGHWAY FROM AN ENTRANCE RAMP THE CAR MADE A VIOLENT FISHTAIL MOVEMENT IN A COUNTERCLOCWISE DIRECTION CAUSING A 180 DEG. SPIN. I TRIED TO CORRECT BUT NO RESPONSE AND THEN APPLIED BRAKES HEAVILY BUT CAR CONTINUED ITS MOVEMENT EVENTUALLY HITTING A CONCRETE BARRIER IN THE RIGHT REAR. THE CAR HAD TO BE TOWED AND EVENTUALLY TOTALED BY THE INSURANCE COMPANY. AT THE IMPACT SITE I DID NOTICE FLUID ON THE ROAD AND ALSO BACK UP THE ROAD. SINCE MY WIFE WAS INJURED AND NEEDED TO BE TAKEN TO THE HOSPITAL, I WAS MORE FOCUSED ON TENDING TO HER BUT AS I LOOK BACK AND ALSO READING ABOUT THE COOLANT PROBLEMS THIS CAR IS HAVING I WOULD NOT BE SURPRISED IF THIS CAR HAD A DISCHARGE OF COOLING FLUID. AS A SIDE NOTE, I DO HOLD A COMPETITION DRIVERS LICENSE WITH THE SCCA AND HAVE COMPETED FOR OVER 30 YEARS AND HAVE OWNED PORSCHES FOR OVER 40 YEARS. I PRESENTLY OWN ANOTHER 2004 GT 3 AND VERY CONCERNED ABOUT THIS PROBLEM. *TR ## VIN FAILED ##
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
THE EVENT HAPPENED IN 2008. PURCHASED PORSCHE GT 3 FROM PORSCHE DEALER IN 2006. ACCELERATING ONTO A LIMITED ACCESS HIGHWAY FROM AN ENTRANCE RAMP THE CAR MADE A VIOLENT FISHTAIL MOVEMENT IN A COUNTERCLOCWISE DIRECTION CAUSING A 180 DEG. SPIN. I TRIED TO CORRECT BUT NO RESPONSE AND THEN APPLIED BRAKES HEAVILY BUT CAR CONTINUED ITS MOVEMENT EVENTUALLY HITTING A CONCRETE BARRIER IN THE RIGHT REAR. THE CAR HAD TO BE TOWED AND EVENTUALLY TOTALED BY THE INSURANCE COMPANY. AT THE IMPACT SITE I DID NOTICE FLUID ON THE ROAD AND ALSO BACK UP THE ROAD. SINCE MY WIFE WAS INJURED AND NEEDED TO BE TAKEN TO THE HOSPITAL, I WAS MORE FOCUSED ON TENDING TO HER BUT AS I LOOK BACK AND ALSO READING ABOUT THE COOLANT PROBLEMS THIS CAR IS HAVING I WOULD NOT BE SURPRISED IF THIS CAR HAD A DISCHARGE OF COOLING FLUID. AS A SIDE NOTE, I DO HOLD A COMPETITION DRIVERS LICENSE WITH THE SCCA AND HAVE COMPETED FOR OVER 30 YEARS AND HAVE OWNED PORSCHES FOR OVER 40 YEARS. I PRESENTLY OWN ANOTHER 2004 GT 3 AND VERY CONCERNED ABOUT THIS PROBLEM. *TR ## VIN FAILED ##
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .