2003 Porsche 911 Carrera 4S 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 2003 Porsche 911 Carrera 4S, 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
- Engine1100.0%
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
2003 PORSCHE 911 C4S COUPE: CATASTROPHIC ENGINE FAILURE IN NEW YORK. WOULD LIKELY HAVE CAUSED A SERIOUS ACCIDENT, IF HAD STILL BEEN ON I-87. MOMENTS BEFORE, DIVERTED TO NEARLY EMPTY RT-9. FROM WEB RESEARCH AND DISCUSSIONS WITH PORSCHE SERVICE CENTERS, I ESTIMATE THAT 1ST GEN WATER COOLED BOXER ENGINES IN BOXSTER AND 911 DURING '99-'08 HAVE HAD > 5% CATASTROPHIC FAILURE RATE ASSOCIATED WITH THE INTERMEDIATE SHAFT SYSTEM (SHAFT, BEARINGS, LUBRICATION SYSTEM). THE 2ND GEN WATER COOLED BOXER ENGINES INTRODUCED IN 2009 ELIMINATED THE INTERMEDIATE SHAFT. MY EXPERIENCE INDICATES PORSCHE AG AND PORSCHE NA HAVE BEEN CONDUCTING A COVER-UP BY PERSUADING AUTHORIZED SERVICE CENTERS TO RETURN THE ENGINES UNOPENED TO PORSCHE AG, WHERE THEY DO A NICE BUSINESS SALVAGING THE CASE FOR REMANUFACTURED ENGINES SOLD BACK TO VICTIMS. THAT HAPPENED TO ME AT PEPE PORSCHE. AT FIRST, THEY SAID THE 'INTERMEDIATE SHAFT BOLT' BROKE. THERE IS NO SUCH PART, ALTHOUGH THERE IS A THREADED END. MY 3RD PARTY WARRANTY COMPANY SAID, 'SORRY, FINE PRINT, WE DO NOT COVER FAILURES CAUSED BY BROKEN BOLTS'. PEPE LATER ADMITTED THAT THE FUNDAMENTAL FAILURE MECHANISM WAS LIKELY INTERMEDIATE SHAFT BEARINGS. THE WARRANTY COMPANY DEMANDED AN INSPECTION. BY THEN, THE BROKEN ENGINE WAS LONG GONE, AND I HAD SPENT $13,000 FOR INSTALLATION OF A REMANUFACTURED ENGINE. I FOUGHT PORSCHE AG, PORSCHE NA, AND PEPE FOR SATISFACTION (BY MYSELF, WITHOUT AN ATTORNEY). I FINALLY SETTLED FOR 50% BACK FROM PEPE. WATCHING THE TOYOTA STORY VIS A VIS THE NHTSA, I HAVE RENEWED HOPE THAT THE NHTSA WOULD PRO-ACTIVELY RECEIVE MY COMPLAINT AND INVESTIGATE. I SUGGEST YOU POLL AUTHORIZED SERVICE CENTERS TO FIND OUT HOW MANY '996-SERIES' ENGINES THEY HAVE SEEN FROM 1999-2008 MODEL YEARS WITH CATASTROPHIC FAILURES, HOW MANY WERE ASSOCIATED WITH A CRASH, AND HOW MANY ENGINES WERE RETURNED TO PORSCHE AG UNOPENED, WITHOUT A THOROUGH INVESTIGATION OF THE FAILURE MECHANISM. *TR
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 .