There are 10 owner-reported body & structure complaints for the 2003 Mercury Grand Marquisin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
MY CAR FAILED INSPECTION DUE TO AN EROSION IN THE FRAME. I WAS TOLD THAT IT WAS THE RESULT OF THE AIR CONDITIONER CONDENSATION DRIPPING ON IT. AS THERE WAS NO ISSUE IN 2014 AND I DROVE THE CAR FEWER THAT 8000 MILES IN THE YEAR, I AM CONCERNED ABOUT THIS ISSUE. THE CAR IS GARAGED AT ALL TIMES AND WAS DRIVEN VERY INFREQUENTLY IN THE WINTER MONTHS. I HAVE HAD IT REPAIRED AND IT HAS NOW PASSED INSPECTION.
TL*THE CONTACT OWNS A 2003 MERCURY GRAND MARQUIS. THE CONTACT NOTICED PAINT CHIPPING ON THE REAR PASSENGER SIDE OF THE VEHICLE. SHE TOOK THE VEHICLE TO THE DEALER AND WAS INFORMED THAT THE ROOF WAS ALSO CHIPPING. THE CONTACT NOTICED THAT IN CERTAIN WEATHER CONDITIONS THE PAINT WOULD CHIP MORE FREQUENTLY AND IN LARGER PORTIONS. THE MANUFACTURER ADMITTED THAT THIS FAILURE WAS A RESULT OF MANUFACTURING, AND ASSUMED RESPONSIBILITY FOR HALF OF THE DAMAGES TO THE VEHICLE. THE VEHICLE HAS NOT YET BEEN REPAIRED. THE FAILURE MILEAGE WAS 41,000 AND CURRENT MILEAGE WAS 41,025.
PAINT FLAKING AND PEELING OFF VARIOUS BODY PARTS OF MY 2003 MERCURY GRAND MARQUIS. NOTHING HAS BEEN DONE YET. *TR
DT*: THE CONTACT STATED THE SPLASH GUARD PANEL UNDERNEATH THE VEHICLE THAT PROTECTS THE RADIATOR, POWER STEERING, AND VACUUM HOSES, IS VERY LOW TO THE GROUND AND CAN BE STRUCK BY OBJECTS IN THE ROADWAY. ALTHOUGH A FAILURE DID NOT OCCUR, THE VEHICLE WAS SEEN BY A DEALER FOR INSPECTION. THE DEALER WAS UNABLE TO DUPLICATE THE PROBLEM. . SPLASH GUARD ALWAYS MADE CONTACT WITH THE BUMPER STOP ON PARKING LOT, WHEN A CAR PULLED OUT THE SPLASHING GUARD MADE CONTACT WITH IT, MAKING A TERRIBLE NOISE, THE PANEL BECAME MORE WARPED EACH TIME THAT IT HAPPENED. BECAUSE IT COVERED VITAL ENGINE AND STEERING PARTS, THIS PANEL SHOULD BE STRAIGHT AND MORE SECURE. *AK
THE PAINT ON THIS VEHICLE HAS BUBBLED AND FELL OFF THE CAR, ALL OVER THE CAR IN VARIOUS PLACES. THERE DOES NOT APPEAR TO BE A PATTERN TO THE DAMAGE, EXCEPT WHERE THE WINDOW WASH SQUIRTS THERE IS SOME DISCOLORATION AND RUST. PREVENTATIVE MEASURES HAVE NO AFFECT ON THE PAINT COMING OFF AS MULTIPLE WASHES AND OR WAXES DO/ DID NOTHING TO PREVENT IT FROM CONTINUING. PART OF THE DAMAGE FOLLOWS A RIVET OR WELDING LINE ON THE HOOD WHERE IT IS WELDED TO BRACES ON THE BOTTOM OF THE HOOD, OTHER PLACES APPEAR TO BE HIGH WIND OR HIGH STRESS AREAS. THE PAINT FEELS FRAGILE , HAS NO RESISTANCE TO BREAKAGE AND APPEARS TO BE A WELL KNOWN DEFECT WHEN RESEARCHED. SANDING , RESURFACING AND REPAINTING HELPS SOME, BUT UNLESS THE WHOLE CAR IS REDONE IT IS UGLY AND VERY HARD TO CONTROL AND IT IS ALSO DISAPPOINTING. *TR
2003 MERCURY GRAND MARQUIS EXPERIENCING PROBLEMS WITH THE BRAKING SYSTEM. *MR THE CONSUMER'S FOOT WOULD MAKE CONTACT WITH THE BRAKE AND THE ACCELERATOR PEDAL AT THE SAME TIME. THE BAKE AND THE ACCELERATOR PEDALS ARE LESS THAN 3 INCHES APART. THE CONSUMER EXPERIENCED A MINOR PARKING ACCIDENT DUE TO THIS PROBLEM. *SC
UPON GETTING IN AND OUT OF THE VEHICLE CONSUMER ALMOST LOST AN EYE. CONSUMER STATED THAT THE DOOR EDGES WERE VERY SHARP. *AK
BACK FRAME IS CRACKED ON BOTH SIDES. CONSUMER SAYS THAT FRAME IS TEARING FROM VEHICLE STRUCTURE. CONSUMER HAS MADE CONTACT WITH DEALER. *AK *TS
INHERENT SAFETY DESIGN OF THE TRUNK LID: I GOT A GASH IN MY FOREHEAD AS I WAS OPENING THE TRUNK LID AND THE LOWER EDGE OF THE LICENSE PLATE CUT INTO MY SCALP JUST BELOW THE HAIR LINE. I BELIEVE THAT THE TRUNK LID DROPPED AS I LEANED INTO THE TRUNK TO RETRIEVE MY BELONGINGS FROM THE TRUNK. I BLED PROFUSELY.*AK
THE DRIVER DOOR STICKS WHEN OPENED, AND HAVE TO DO SO TWO TIMES, WITH BOTH HANDS TO GET OUT. (PASSENGER DOOR ALSO) THE PLASTIC HANDLE MAKES IT HARD AND WILL CUT YOUR HAND. THE TRIPLE TRACT SEAL ACTS AS IF IT WERE CRAZY GLUE. *JB SCC
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026