Owners have filed 13 complaints
about the 2003 Porsche Boxster with NHTSA between 2003 and 2026.
The largest single group is the transmission & drivetrain.
Across this model's run it ranks 1 of 8 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 27
Against the median year of the Porsche Boxster. 50 means typical for this
model; 100 means roughly double.
Severity — 100
23.1% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 100
73% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
How 2003 compares with every other Porsche Boxster
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade:
A
B
C
D
F
ungraded
What breaks on a 2003 Porsche Boxster
Every complaint is filed against a part. Follow any row for the complaints about that part alone.
Transmission & Drivetrain
323.1%
Median failure at 12,000 miles
Engine & Cooling
215.4%
Median failure at 32,500 miles
Seats
17.7%
Median failure at 77,312 miles
Tires
17.7%
Median failure at 20,000 miles
Windows, Mirrors & Wipers
17.7%
Fuel & Propulsion
17.7%
Median failure at 119,774 miles
Acceleration & Cruise Control
17.7%
Median failure at 18,000 miles
Brakes
17.7%
Median failure at 95,166 miles
Steering
17.7%
1 crashes, 0 fires · median 8,000 mi
Airbags
17.7%
Median failure at 18,000 miles
When it fails
Odometer readings owners gave when they filed. About half of all
complaints include one.
1,000 – 9,999 miles
19.1%
10,000 – 24,999 miles
654.5%
25,000 – 49,999 miles
19.1%
75,000 – 99,999 miles
218.2%
100,000 – 149,999 miles
19.1%
NHTSA crash tests
The agency crash-tested this model year itself. These are its own
photographs and star ratings.
These stars come from the pre-2011 crash test programme. NHTSA
rebuilt the programme for the 2011 model year and states that
ratings either side of that change are not comparable — so do
not read these against a 2011-or-newer car's stars.
Configuration
Overall
Front
Side
Rollover
2003 Porsche Boxster 2-DR w/SAB
—
—
—
—
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Sep 2003peak 2May 2026
Recalls on the 2003 Porsche Boxster
A complaint is one owner's allegation. A recall is the point at which
the manufacturer or a regulator agreed the defect is real and dangerous
enough to fix for free — however old the car is.
Canada — Transport Canada
Canada runs its own recall programme, and its campaigns do not
always mirror the American ones.
Recall 202248758,856 units in Canada
Lights And Instruments
Issue: On certain vehicles, covers were not installed over the horizontal headlamp adjusters. As a result, the headlamps may be adjusted horizontally. Canadian regulations do not allow for horizontal headlamp adjustment unless the vehicle is equipped with a built-in aiming device. Safety Risk: Headlamps that are not properly adjusted could cause reduced visibility or glare for oncoming drivers, and increase the risk of a crash. Corrective Actions: Porsche will notify owners by mail and instruct you to take your vehicle to a dealership to install caps over the headlamp adjustment screws.
Recall 2003009415 units in Canada
Powertrain
On certain vehicles equipped with a Tiptronic transmission. The automatic transmission lever cable may be incorrectly adjusted. It may be possible to shift the transmission out of park after the ignition key has been removed from the ignition. Correction: Dealer will adjust cable.
Reports where the owner recorded a crash, a fire, an injury or a death.
at 18,000 milesBoca Raton, FL1 injured
AIR BAGS
DT*: THE CONTACT STATED WHILE DRIVING 20-25 MPH, THE VEHICLE ACCELERATED ON ITS OWN CAUSING THE CONTACT TO LOSE CONTROL WHICH RESULTED AN ACCIDENT. THERE WERE NO PROBLEMS WITH THE VEHICLE PRIOR TO THIS INCIDENT. THERE WERE NO LIGHTS ILLUMINATED ON THE DASH. THE VEHICLE FINALLY HIT A CURB CAUSING EXTENSIVE DAMAGE TO THE VEHICLE. THE DRIVER WAS INJURED, BUT HASN'T GONE TO THE HOSPITAL. THERE WAS A POLICE REPORT FILED. THE AIR BAGS ALSO DID NOT DEPLOY.
NHTSA complaint #10161053 — an unverified report by a vehicle owner.
at 18,000 milesBoca Raton, FL1 injured
VEHICLE SPEED CONTROL
DT*: THE CONTACT STATED WHILE DRIVING 20-25 MPH, THE VEHICLE ACCELERATED ON ITS OWN CAUSING THE CONTACT TO LOSE CONTROL WHICH RESULTED AN ACCIDENT. THERE WERE NO PROBLEMS WITH THE VEHICLE PRIOR TO THIS INCIDENT. THERE WERE NO LIGHTS ILLUMINATED ON THE DASH. THE VEHICLE FINALLY HIT A CURB CAUSING EXTENSIVE DAMAGE TO THE VEHICLE. THE DRIVER WAS INJURED, BUT HASN'T GONE TO THE HOSPITAL. THERE WAS A POLICE REPORT FILED. THE AIR BAGS ALSO DID NOT DEPLOY.
NHTSA complaint #10161053 — an unverified report by a vehicle owner.
at 8,000 milesKansas City, MOCrash
STEERING:HYDRAULIC POWER ASSIST SYSTEM
POWER STEERING FAILURE, FLUID LEAK.
NHTSA complaint #10039287 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
Perris, CA
VISIBILITY/WIPER
Vehicle has an open safety recall involving a condition that may increase the risk of a crash. During a visit to an authorized dealership for information regarding the recall, dealership personnel advised against completing the recall procedure. I was informed that due to the age of the vehicle and components, performing the recall could potentially damage the headlight seals and that I could be financially responsible for repairs if damage occurred during the recall process. This raised concerns because the recall relates to a safety issue, yet I was discouraged from having the repair performed unless I accepted potential liability for damage resulting from the recall work itself. As a result, the safety recall remains unresolved. No warning lamps or messages were present prior to this interaction. The issue described here concerns the handling of the recall and the guidance provided by the dealership regarding completion of a safety recall repair.
NHTSA complaint #11737614 — an unverified report by a vehicle owner.
at 20,000 milesDe Los Solmos, AZ
TIRES
The contact owns a 2003 Porsche Boxster equipped with Landgolden Tires, Tire Line: L27, Tire Size: 265/35/ZR18, DOT Number: (N/A). While performing routine maintenance on the vehicle, the contact discovered that the rear passenger’s side tire had experienced extensive tread separation. The online dealer from whom the tires were purchased from was contacted, but no assistance was offered. The manufacturer was not yet contacted. The failure mileage was approximately 20,000. The VIN was not available.
NHTSA complaint #11720640 — an unverified report by a vehicle owner.
at 12,669 milesChillicothe, OH
POWER TRAIN
The contact owns a 2003 Porsche Boxster. The contact stated that upon starting the vehicle, the indicator lights on the gear shifter for the park(P) and the four (4) position was flashing. In addition, while driving at various speeds, the transmission failed to shift into fifth gear and the vehicle would enter LIMP Mode. The contact had taken the vehicle to a dealer on two separate occasions and was informed that the gear selector switch was sticky due to the vehicle not being driven. The vehicle was repaired after the failures; however, the failure persisted. The manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was 12,669.
NHTSA complaint #11530804 — an unverified report by a vehicle owner.
South SAN Franc, CA
ENGINE
THE IMS BEARINGS IN THE 2001-2005 PORSCHE BOXSTER WOULD JUST STOP THE ENGINE IF NOT REPLACED. HELLO, I BOUGHT MY 2003 POSCHE BOXSTER BRAND NEW FROM RECTOR PORSCHE/AUDI DEALERSHIP OF BURLINGAME BACK IN 2003. I RECENTLY FOUND OUT THAT PORSCHE HAD A FAULTY PART IN THEIR ENGINE CALLED THE IMS BEARINGS. THE CARS THAT WERE INVOLVED ARE CARS FROM 2001-2005 PORSCHE BOXSTER. THERE WAS A LAWSUIT (EISEN VS. PORSCHE CARS NORTH AMERICA) THAT TOOK PLACE AND SETTLED BEFORE GOING INTO TRIAL. PEOPLE THAT OWNED THE CARS WERE NOTIFIED TO GET THEIR IMS BEARINGS FIXED THROUGH PORSCHE. I WAS NEVER NOTIFIED. I REACHED OUT TO PORSCHE CARS NORTH AMERICA AND ASKED ABOUT THE LAWSUIT. THE LAST DATE TO FILE TO GET YOUR CAR FIXED WAS OCTOBER 15, 2013. THEY TOLD ME THAT I WASN'T EVEN LISTED IN THEIR SYSTEM AS THE OWNER OF MY PORSCHE BOXSTER. SO I ASKED. HOW COULD HAVE I FILED A CLAIM IF I WAS NEVER NOTIFIED ABOUT IT. PEOPLE'S CARS WOULD SEIZED FROM WORKING WITHOUT ANY SIGNS OF ANY PROBLEMS. MY CAR ONLY HAS 32,480 MILES ON IT. THE DEALERSHIP MECHANIC SUGGEST'S THAT I GET MY IMS BEARINGS REPLACED. BUT IT WOULD COST ME $3,500. WHAT CAN I DO ABOUT THIS? THEY WON'T OWN UP TO THIS AND IT'S THEIR FAULT FOR NOT HAVING MY NAME LISTED IN THEIR SYSTEM. I SHOWED THEM MY BILL OF SALES FROM RECTOR AND EVEN SHOWED PROOF OF REGISTRATIONS DATING BACK FROM 2002 - TO PRESENT DAY.
NHTSA complaint #11265610 — an unverified report by a vehicle owner.
at 119,774 milesChattanooga, TN
FUEL/PROPULSION SYSTEM
TOOK MY PORSCHE BOXSTER TO THE LOCAL PORSCHE DEALER FOR AN OIL CHANGE. THEY CALLED ME BACK AND SAID MY CAR HAD A GASOLINE FUEL LEAK AND NEEDED A REPLACEMENT FUEL LEVEL SENSOR IT WAS CRACKED AND LEAKING FUEL.. THE SERVICE ORDER AT PICKUP SAID MECHANIC NOTED FUEL DRIPPING FROM GAS TANK...NOTED LEAKING FROM CRACKS IN THE SENDING UNIT WHERE THE PRESSURIZED FUEL OUTLET IS, REPLACED SENDING UNIT AND SEAL, ALSO NOTED ELECTRICAL CONNECTOR SEAL SWOLLEN FROM FUEL CONTAMINATION. I ASKED THE SERVICE MANAGER IF THIS HAD BEEN REPORTED TO THE NHTSA AND HE SAID NO, WHY SHOULD THEY. I EXLPLAINED THIS WAS AN EXTREME SAFETY HAZARD INVOLVING A FUEL LEAK THAT COULD HAVE SERIOUS LIFE OR DEATH CONSEQUENCES. I HAVE THE REPLACED UNIT AND PICTURES AS I REQUESTED THIS UPON PICKING UP THE VEHICLE. I WAS CHARGED $628.58 FOR REPLACING FAULTY FUEL LEVEL SENSOR(SENDING UNIT). I HAVE A COPY OF THE BILL WITH MECHANIC'S COMMENTS. ALSO PICS OF THE FAULTY UNIT ON MY CELL PHONE.
NHTSA complaint #10926541 — an unverified report by a vehicle owner.
at 95,166 milesCarolina Beach, NC
SERVICE BRAKES
REAR BRAKES (BOTH SIDES) BEGAN APPLYING THEMSELVES WITH NO DRIVER INPUT, LOCKING UP WITHIN ABOUT 5 SECONDS.
NHTSA complaint #10625772 — an unverified report by a vehicle owner.
at 11,000 milesCanon Lake, CA
POWER TRAIN
TL* THE CONTACT OWNS 2003 PORSCHE BOXTER. THE CONTACT STATED THAT WHILE DRIVING 40 MPH, AN ABNORMAL NOISE WAS HEARD FROM THE VEHICLE. AFTER PARKING, THE CONTACT NOTICED OIL LEAKING FROM THE VEHICLE. THE VEHICLE WAS TOWED TO THE DEALER WHERE AND DIAGNOSED AS HAVING AN INTERMEDIATE SHAFT BEARING FAILURE. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 11,000. THE VIN WAS NOT AVAILABLE.
NHTSA complaint #10552976 — an unverified report by a vehicle owner.
at 77,312 milesCarolina Beach, NC
SEATS
A STRANGE THING HAPPENED AS MY WIFE AND I WERE DRIVING HOME AT NIGHT IN OUR '03 BOXSTER. THE SEATBACK ON THE PASSENGER SIDE MYSTERIOUSLY BEGAN ROTATING FORWARD, ALL EFFORTS TO STOP IT USING BODY FORCE FAILED. MY WIFE WAS CRUSHED INTO THE GLOVE BOX BY THE TIME I WAS ABLE TO PULL OVER AND STOP. SHE COULD NOT REACH THE DOOR HANDLE AND WAS BARELY ABLE TO EXTRICATE HERSELF AFTER I OPENED THE DOOR FROM THE OUTSIDE. THE SEAT MOTOR HAD ROTATED THE SEATBACK FORWARD TO A POSITION OF APPROXIMATELY 45 PAST VERTICAL BY THE TIME IT STOPPED. WE LATER DISCOVERED THAT THE SHEEPSKIN SEAT COVER HAD SNAGGED THE PROTRUDING SWITCH ON THE SIDE OF THE SEAT AND HELD IT, CAUSING THE SEAT BACK TO ROTATE. THE POINT I NEED TO MAKE IS THIS; WHAT IF THE SAME THING HAD HAPPENED ON THE DRIVER'S SIDE? THE DRIVER WOULD BE CRUSHED AGAINST THE STEERING WHEEL AND UNABLE TO STOP. A CRASH WOULD BE INEVITABLE, AND THE DRIVER WOULD SUSTAIN SERIOUS INJURY SINCE THE SPACE BETWEEN THE DRIVER AND WHEEL IS SO SMALL. THERE IS ABSOLUTELY NO NEED FOR THE SEAT MOTOR TO BE ABLE TO ROTATE THE SEATBACK FORWARD TO SUCH A HUGE ANGLE FROM VERTICAL, ESPECIALLY SINCE THE MECHANICAL LEVER AT THE TOP OF THE SEAT MAY BE USED IF SEAT ROTATION IS REQUIRED. I STRONGLY URGE PORSCHE TO CONSIDER INSTALLING A LIMIT SWITCH ON THE SEAT MOTOR TO PREVENT EVEN THE REMOTEST POSSIBILITY OF THIS EVENT OCCURRING. THE POSSIBILITY OF SOMEONE PLACING AN ITEM IN A POSITION TO SNAG THE PROTRUDING SWITCH AND ACTIVATE THE SEAT ROTATION IS TOO REAL TO IGNORE, AND RAISES A SIGNIFICANT SAFETY ISSUE. NOTE THAT THE SHEEPSKIN SEAT COVERS I USE ARE CUSTOM MADE FOR THE BOXSTER SEAT AND HAVE CUTOUTS AROUND THE SEAT SWITCHES; EVEN SO THIS INCIDENT HAPPENED.
NHTSA complaint #10458148 — an unverified report by a vehicle owner.
at 32,500 milesPanama City Beach, FL
ENGINE AND ENGINE COOLING
1. I PURCHASED THIS CAR NEW. IT IS MY DAILY DRIVER. ONLY SERVICED MY PORSCHE MECHANICS. IT HAD 32,500 MILES AT TIME OF FAILURE. AFTER LEAVING A DOCTOR'S APPOINTMENT, I NOTICED AN UNUSUAL SOUND COMING FROM THE ENGINE COMPARTMENT. NOT VERY LOAD. I THOUGHT IT HAD CAUGHT A PIECE OF DEBRIS IN THE BELT SYSTEM. DROVE IT SLOWLY HOME, AND THE SOUND GOT PROGRESSIVELY LOUDER. THE NEXT MORNING THERE WAS A PUDDLE OF OIL UNDER THE CAR. I CALLED THE PORSCHE DEALER IN MOBILE, AL FOR A TOW TRUCK. 2. I WAS TOLD BY THE PORSCHE SERVICE MANAGER THAT THE CAR HAD EXPERIENCED THE INFAMOUS INTERMEDIATE SHAFT (IMS) FAILURE, AND THAT I WOULD NEED A NEW ENGINE. I WAS TOLD THERE IS LITTLE TO NO WARNING OF THIS FAILURE, AND THEY ARE ALMOST ALWAYS CATASTROPHIC. REQUIRING COMPLETE ENGINE REPLACEMENT. 3. PORSCHE NORTH AMERICA WAS CONTACTED WITH ALL PERTINENT INFORMATION. THEY RESPONDED WITH AN OFFER TO COVER HALF THE COST OF A FACTORY REBUILT ENGINE. I WOULD PAY THE OTHER HALF, PLUS ALL LABOR AND TOWING COSTS. THIS REPLACEMENT WILL COST ME OVER $11,000.00 !!!
NHTSA complaint #10358136 — an unverified report by a vehicle owner.
at 18,000 milesBoca Raton, FL1 injured
AIR BAGS
DT*: THE CONTACT STATED WHILE DRIVING 20-25 MPH, THE VEHICLE ACCELERATED ON ITS OWN CAUSING THE CONTACT TO LOSE CONTROL WHICH RESULTED AN ACCIDENT. THERE WERE NO PROBLEMS WITH THE VEHICLE PRIOR TO THIS INCIDENT. THERE WERE NO LIGHTS ILLUMINATED ON THE DASH. THE VEHICLE FINALLY HIT A CURB CAUSING EXTENSIVE DAMAGE TO THE VEHICLE. THE DRIVER WAS INJURED, BUT HASN'T GONE TO THE HOSPITAL. THERE WAS A POLICE REPORT FILED. THE AIR BAGS ALSO DID NOT DEPLOY.
NHTSA complaint #10161053 — an unverified report by a vehicle owner.
at 18,000 milesBoca Raton, FL1 injured
VEHICLE SPEED CONTROL
DT*: THE CONTACT STATED WHILE DRIVING 20-25 MPH, THE VEHICLE ACCELERATED ON ITS OWN CAUSING THE CONTACT TO LOSE CONTROL WHICH RESULTED AN ACCIDENT. THERE WERE NO PROBLEMS WITH THE VEHICLE PRIOR TO THIS INCIDENT. THERE WERE NO LIGHTS ILLUMINATED ON THE DASH. THE VEHICLE FINALLY HIT A CURB CAUSING EXTENSIVE DAMAGE TO THE VEHICLE. THE DRIVER WAS INJURED, BUT HASN'T GONE TO THE HOSPITAL. THERE WAS A POLICE REPORT FILED. THE AIR BAGS ALSO DID NOT DEPLOY.
NHTSA complaint #10161053 — an unverified report by a vehicle owner.
at 12,000 milesADA, MI
POWER TRAIN:MANUAL TRANSMISSION
SECOND GEAR IN THE TRANSMISSION BROKE.
NHTSA complaint #10118005 — an unverified report by a vehicle owner.
at 8,000 milesKansas City, MOCrash
STEERING:HYDRAULIC POWER ASSIST SYSTEM
POWER STEERING FAILURE, FLUID LEAK.
NHTSA complaint #10039287 — an unverified report by a vehicle owner.