There are 9 owner-reported fuel system complaints for the 2003 Mercury Grand Marquisin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2003 MERCURY GRAND MARQUIS. WHILE DRIVING AT ANY SPEED, FUEL SPILLED ALL OVER THE ENGINE WITHOUT WARNING. THERE WAS NO SMOKE PRESENT. THE FAILURE RECURRED SEVERAL TIMES. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO PLACED O-RINGS IN THE FUEL INJECTORS, BUT THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO HILBISH FORD (704-938-3121, LOCATED AT 2600 S CANNON BLVD, KANNAPOLIS, NC 28083) WHERE THE O-RINGS AND THE FUEL INJECTORS WERE REPLACED, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 92,500.
TL* THE CONTACT OWNS A 2003 MERCURY GRAND MARQUIS. WHILE DRIVING APPROXIMATELY 40 MPH, THERE WAS A FUEL ODOR EMITTING FROM THE VENTS. THE FAILURE OCCURRED ON NUMEROUS OCCASIONS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 94,000.
TL* THE CONTACT OWNS A 2003 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THERE WAS A VERY STRONG FUEL ODOR IN THE VEHICLE, WHICH WAS BEING EMITTED FROM THE FUEL STORAGE TANK. THE DEALER WAS CONTACTED AND STATED THAT THERE WERE NO RECALLS FOR THE VEHICLE. THE VEHICLE WAS NEITHER DIAGNOSED NOR REPAIRED. THE FAILURE MILEAGE WAS 35,000 AND THE CURRENT MILEAGE WAS 39.416.
THE RECALL IS THE FUEL PUMP . I HAVE THREE CHILDREN AND MY VEHICLE IS DEEMED UNSAFE TO COMMUTE. THE EXPENSES ARE UNATTAINABLE AT THIS TIME TO COMPLETE REPAIRS. *TR
DT*: THE CONTACT STATED AFTER HEARING THERE WAS A MANUFACTURER'S OFFER TO REPLACE THE GASOLINE STORAGE TANK ON POLICE VEHICLES DUE TO A RISK OF FIRE IN THE EVENT OF A REAR END COLLISION, THE VEHICLE WAS TAKEN TO A DEALER. ALTHOUGH THE VEHICLE DISPLAYED NO PRIOR PROBLEMS OR HAD ANY EXISTING FAILURES, THE CONTACT INSTRUCTED THE SERVICE DEPARTMENT TO REPLACE THE FUEL TANK STORAGE ASSEMBLY. THE CONSUMER WANTED TO KNOW WHY HE HAD TO PAY FOR SERVICE WHEN THE POLICE VEHICLE WERE BEING REPAIRED FOR FREE. UPDATED 02/27/06. *JB UPDATED 4/6/2006 - THE GAS TANK WAS NOT REPLACED. A GAS TANK PROTECTION SHIELD WAS INSTALLED IN POLICE CARS FREE OF CHARGE. THE CONSUMER WAS UPSET BECAUSE HE HAD TO PAY TO HAVE ONE INSTALLED IN HIS VEHICLE. *NM
DT: THE CALLER STATES THAT WHILE HE DRIVING AT 65 MPH HIT SOMETHING IN THE ROAD. THERE WAS A LOUD NOISE AND THIS CAUSED A HOLE IN THE GAS TANK. THE CALLER SAID A LOCAL MECHANIC DID A QUICK FIX WITH A SCREW AND SOME GLUE SO HE COULD GET HOME. DEALER SAID IT WOULD COST A LOT MORE TO REPLACE THE TANK WITH THEM AND HE WENT TO SOMEONE ELSE TO HAVE IT REPLACED FOR A CHEAPER PRICE. MANUFACTURER HAS NOT BEEN CONTACTED YET. *AK
MY WIFE WAS DRIVING DOWN A HEAVILY TRAVELED MAJOR THOROUGHFARE IN THE SAN FERNANDO VALLEY, WHEN HER 2003 MERCURY GRAND MARQUIS STALLED. THE ELECTRIC FUEL PUMP HAD FAILED. AS THE VEHICLE DIED, SHE LOST THE POWER STEERING ON THIS 4,000 POUND VEHICLE. UNFORTUNATELY, SHE HAD HER TWO ELDERLY DISABLED PARENTS WITH HER. THE VEHICLE ONLY HAD 39, 527 MILES ON IT. LUCKILY NO ONE GOT HURT. *TR
WHILE DRIVING THE CONSUMER COULD SMELL GAS FUMES INSIDE THE VEHICLE. *NLM
RECALL REQUEST FOR A STEEL SHIELD BUILT BEHIND THE GAS TANK ON 2003 MERCURY GRAND MARQUIS. *DT *JB. *AK
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 26, 2026