Problems · NHTSA complaints

2003 Porsche Boxster S problems

Owners filed 7 complaints about the 2003 Porsche Boxster S with NHTSA between Jul 2005 and Mar 2019. The most-cited component is engine and engine cooling (4).

Complaints
7
Filed with NHTSA
Crashes
2
Reported by owners
Fires
0
Reported by owners
Injuries
2
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Engine and engine cooling4
  2. Structure1
  3. Tires1
  4. Steering1
  5. Air bags1
  6. Power train1
  7. Electrical system1
  8. Latches/locks/linkages1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Oct 28, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20051
20060
20071
20080
20091
20102
20110
20120
20130
20140
20150
20160
20170
20180
20192

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Engine and engine cooling

4 reports
“MY ENGINE FAILED DUE TO A PART CALLED THE INTERMEDIATE SHAFT. THE CAR IS A 2003 PORSCHE, BOXSTER S WITH 47,000. THIS PROBLEM IS WELL DOCUMENTED ON LINE AND APPEARS TO BE A MANUFACTURING PROBLEM. THE DEALERSHIP I WENT TO, KNEW RIGHT AWAY ABOUT THE FAILURE AS THEY SEE AT LEAST 1 PER MONTH. WHEN THIS PART FAILS, THE REMEDY IS A NEW (OR USED ENGINE). THERE IS NO WAY TO KNOW OF THIS FAILURE UNTIL IT HAPPENS. I REPLACED MY ENGINE AND IT COST $12,000. THIS WEBSITE PROVIDES A LOT OF INFORMATION ABOUT THIS PORSCHE PROBLEM AND IT SHOWS SOME OF THE RESEARCH CONDUCTED BY THEIR ENGINEER, HTTP://WWW.LNENGINEERING.COM/IMS.HTML. THEIR RESEARCH INDICATES THAT PORSCHE KNOWS OF THE PROBLEM AND THINKS IT HAS TO DO WITH PARTICULAR VIN NUMBER CARS (ONE OF WHICH IS MINE) AND FIXES IT WHEN IT HAPPENS DURING WARRANTY. I ASKED THEM TO HELP COVER THE COST AND THEY SAID NO, AS MY CAR WAS OUT OF WARRANTY. IT IS MY OPINION THAT A CAR (PORSCHE OR NOT) SHOULD NOT FAIL LIKE THIS ESPECIALLY WITH NO WARNING. AS AN FYI, IT APPEARS PORSCHE FINALLY REDESIGNED THIS PART IN 2006. I HOPE YOU CAN HELP ME CAPTURE SOME OF MY OUT OF POCKET EXPENSE AS WELL AS MAKE OTHER USERS AWARE WITH A POSSIBLE RECALL. *TR”
Owner complaint to NHTSAFiled Jul 23, 2010Engine and engine coolingODI 10344995

Structure

1 report1 crash
“MARCH 5, 2019. [XXX]. [XXX] 2003 PORSCHE BOXSTER 3.2 ENGINE WITH BRAND NEW MICHELIN ULTRA-HIGH-PERFORMANCE TIRES. ON DECEMBER 31, 2018 ABOUT 10:30 AM, I WAS DRIVING THE CAR GOING EAST, ABOUT 80 TO 100 MILES PER HOUR IN THE MIDDLE OF THREE LANES.WHEN I REACHED THE TOP OF THE HILL, THE FRONT END OF THE CAR WOBBLE IN THE AIR, ONE SIDE WENT UP AND THEN IT CAME DOWN: AND THEN THE OTHER SIDE WENT UP AND CAME DOWN ALTERNATING FOR FEW SECONDS; AND THEN THE WHOLE FRONT END STARTED TO GO UP LIKE IT OR TAKING OFF AS AN AIRPLANE. I APPLIED THE BRAKES LIGHTLY AND IT CAME DOWN ON THE FRONT RIGHT TIRE, THEN STARTED TO PULLING ME TO THE RIGHT IMMEDIATELY. I TURNED LEFT TO CORRECT AND THE FRONT TIRES LOST TRACTION AND SO THE REAR TIRES LOST TRACTION IMMEDIATELY. THE CAR SPUN AROUND TWICE AND SIDESWIPED AGAINST THE CURB ON THE PASSENGER SIDE AND THE FRONT ENDED UP FACING EASTWARDLY, JUST THE SAME WAY AS I WAS HEADING. I WAS THE ONLY ONE IN THE CAR. THE LEFT SIDE DOOR AIRBAG OPENED UP. MY LEFT ARM AND SIDE OF MY BODY GOT ALL BRUISED UP AND SORE FOR SEVERAL WEEKS, BECAUSE OF THE CAR AND AIRBAG IMPACT. THE REAR PASSENGER TIRE WENT OVER THE CURB AND DID NOT HAVE ANY DAMAGE. THE…”
Owner complaint to NHTSAFiled Mar 14, 2019Structure, TiresCrash reportedODI 11186922

Tires

1 report1 crash

Steering

1 report1 crash
“TL* THE CONTACT OWNED A 2003 PORSCHE BOXSTER S. WHILE DRIVING UPHILL AT 100 MPH, THE VEHICLE VIBRATED VIOLENTLY WHEN THE BRAKE PEDAL WAS DEPRESSED. ALSO, THE STEERING PULLED TO THE RIGHT AND THE STEERING WHEEL DETACHED FROM THE STEERING COLUMN. THE VEHICLE STRUCK A CURB AND THE PASSENGER SIDE AIR BAGS DEPLOYED. THE REAR DRIVER'S SIDE TIRE DETACHED FROM THE VEHICLE. A POLICE REPORT WAS NOT FILED. THE VEHICLE WAS TOTALED AND TOWED TO THE CONTACT'S HOME. THE CONTACT SUFFERED BRUISES TO THE LEFT ARM, WHICH DID NOT REQUIRE MEDICAL ATTENTION. THE DEALER AND MANUFACTURER WERE NOT MADE AWARE OF THE FAILURE. THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE FAILURE MILEAGE WAS 130,000.”
Owner complaint to NHTSAFiled Mar 6, 2019SteeringCrash reportedODI 11184572

Air bags

1 report
“CALLED PORSCHE DEALERSHIP TO FIND OUT HOW TO MANUALLY TURN OFF THE PASSENGER AIRBAG IN 2003 BOXSTER S. I WAS TOLD THAT A PORSCHE MANUFACTURER CHILD SAFETY SEAT WAS NEEDED TO BE INSTALLED AND THEN THE SEAT BELT WOULD BE BUCKLED INTO THAT. THIS DEVICE WOULD THEN TURN OFF THE PASSENGER AIRBAG. I INQUIRED ABOUT THE SIZE OF THIS SEAT AND WAS INFORMED THAT IT WOULD FIT A CHILD UP TO 5 YEARS OF AGE. I TOLD THEM THAT THE LAW REQUIRES THAT A CHILD 12 AND UNDER MUST NOT BE SEATED WITH AN AIRBAG. ALSO AN ELDERLY PERSON OR SOMEONE WHO RECENTLY HAD SURGERY WOULD ALSO NOT WANT TO BE SEATED WITH AN AIRBAG. THE BOXSTER S IS ONLY A TWO PASSENGER CAR. I WAS TOLD THAT IT CAN ONLY BE DONE WITH THE CAR SEAT INSTALLED AND THAT THEY COULD NOT DISCONNECT THE AIRBAG ANY OTHER WAY. THEY ALSO SAID THAT IF I WAS TO DISCONNECT IT OR HAVE SOMEONE ELSE TRY TO INSTALL A TURN OFF SWITCH THEN I WOULD BE VOIDING THE WARRANTY. THEY SAID THAT THE 2005'S CAME WITH A TURN OFF SWITCH BUT NONE FOR THE 2003. I ASKED A MECHANIC IN MY FAMILY ABOUT THIS, HE SAID IT SOUNDS LIKE A SAFETY ISSUE. COULD YOU PLEASE CHECK INTO THIS.*JB”
Owner complaint to NHTSAFiled Jan 27, 2007Air bagsODI 10180899

Power train

1 report1 related recall
“I HAVE HAD MANY PROBLEMS WITH A 2003 BOXSTER S I PURCHASED IN MAY 2003 FROM MCKENNA PORSCHE IN NORWALK, CA. SOME OF THE MAJOR PROBLEMS IN THE LAST 2 YEARS INCLUDE: 1) CONDENSATION IN OIL FILLER AREA; 2) OIL LEAKS IN 2 LOCATIONS; 3) WORN DRIVE BELT; 4) CLUTCH CAUSING GRINDING NOISE; 5) IGINITION SWITCH & KEY DIDN'T WORK; AIR CONDITIONING UNIT DIDN'T COOL; 6) STEREO SYSTEM DIDN'T WORK. MCKENNA HAS REPAIRED/REPLACED ALL ITEMS TO DATE EXCEPT THE CLUTCH. MCKENNA ADVISED CLUCTH PROBLEM IS MY RESPONSIBILITY DUE TO WEAR AND COST IS $1700. THE VEHILCE HAS 19000 MILES. THE INCIDENT DATE BELOW IS DATE I PICKED UP THE VEHILCE FROM MCKENNA. I HAVE HAD PROBLEMS WITH THE VEHICLE STARTING WITH THE FIRST DAY I PICKED UP THE VEHICLE FROM MCKENNA.”
Owner complaint to NHTSAFiled Jul 15, 2005Engine and engine cooling, Power train, Electrical system, Latches/locks/linkagesODI 10128917
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 28, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.