There are 5 owner-reported fuel system complaints for the 2007 Mercury Grand Marquisin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
SMELLED GAS WHEN EXITING THE VEHICLE. CONFIRMED A FUEL LEAK IN THE FUEL TANK BY OBSERVING A FUEL DRIP. CONTINUED DRIVING THE CAR FOR A FEW DAYS. ON JUNE 15, 2020, I NOTICED A STRANGE NOISE AS I DROVE, SOMETHING RUBBING OR BUMPING ON THE FRAME UNDER THE CAR. WHILE DRIVING, THE NOISE INCREASED AND INTENSIFIED. I WAS FORCED TO PULL OVER AND CHECK UNDER THE CAR. TO MY HORROR I SAW THE GAS TANK DRAGGING ON THE ROAD. A TOW TRUCK WOULD NOT TOW THE VEHICLE. MY BROTHER AND I TIED THE TANK UP UNDER THE CAR USING A NYLON STRAP TO GET THE CAR HOME. I CALLED THE DEALERSHIP TO FIX THE CAR. I NOW HAVE AN AFTERMARKET TANK ON MY CAR. FORD DOES NOT MAKE THE TANK ANYMORE.THE CAR WAS IN MOTION ON A CITY STREET WHEN THE TANK FELL. I BELIEVE THE PROBLEM WAS CAUSED BY A FUEL TANK STRAP FAILURE. THE FUEL LEAK WAS ALSO DIRECTLY RELATED TO THE STRAP SUPPORTING THE TANK. *TR
GAS TANK FELL DOWN AT HOME IN THE DRIVEWAY. VEHICLE WAS STATIONARY AND FULL TANK OF GAS.
TL* THE CONTACT OWNS A 2007 MERCURY GRAND MARQUIS. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 10 MPH, THE FUEL TANK FRACTURED AND SEPARATED FROM THE VEHICLE. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE FUEL TANK STRAPS FAILED DUE TO EXCESSIVE CORROSION, AND THE FUEL PUMP NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 103,000.
THE FUEL GAUGE WILL NOT COME OFF EMPTY AFTER FILLING THE GAS WITH GAS. IT TAKES A LONG WHILE (30 MINUTES) TO GET TO WHERE IT SHOULD BE. *TR
TL*THE CONTACT OWNS A 2007 MERCURY GRAND MARQUIS. WHILE DRIVING APPROXIMATELY 70 MPH ON NORMAL ROAD CONDITIONS, THE VEHICLE SUDDENLY STOPPED. THE CONTACT NOTICED THAT THERE WAS NO GASOLINE IN THE FUEL TANK BECAUSE THE FUEL GAUGE DISPLAYED INACCURATE READINGS. THE FAILURE OCCURRED WITHOUT WARNING. THE EMPTY FUEL TANK WAS CONSUMED WITH GASOLINE. THE VEHICLE WAS TAKEN TO THE AUTHORIZED DEALER AND THEY STATED THAT THIS WAS A COMMON ISSUE WITH NO AVAILABLE REMEDY. THE TECHNICIAN RECOMMENDED THAT HE FILL THE FUEL TANK EVERY 200 MILES. THE VEHICLE HAS NOT BEEN REPAIRED. THE CONTACT WAS CONCERNED OF THE SAFETY RISK INVOLVED. THE FAILURE MILEAGE WAS 48,700 AND CURRENT MILEAGE WAS 49,185. UPDATED 11-25-08 *BF UPDATED 11/26/08. *JB
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