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2003 Porsche 911 Carrera 4S

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 1 of 1 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Engine And Engine Cooling. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

0 crash reports0 fire reports0 injury reports

What owners actually said

1 reports
38,000 miles · Mar 13, 2010
Engine And Engine Cooling

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 …

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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

NHTSA ODI #10319400

Official recalls

1

04V070000 · Seats

Feb 18, 2004

CERTAIN PASSENGER VEHICLES FITTED WITH FRONT SEAT BACKS, WHICH DO NOT MEET PORSCHE'S STRENGTH STANDARDS.

Consequence & remedy

Consequence: IN THE EVENT OF A VEHICLE CRASH, THE SEATS COULD TWIST, TILTING ON ONE SIDE TO THE REAR, POSSIBLY RESULTING IN PERSONAL INJURY TO THE VEHICLE OCCUPANT.

Remedy: DEALERS WILL REPLACE BOTH THE FRONT SEATS. OWNER NOTIFICATION BEGAN ON APRIL 26, 2004. OWNERS SHOULD CONTACT PORSCHE AT 1-800-545-8039.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.