There are 11 owner-reported speed control & cruise complaints for the 2007 Mercury Grand Marquisin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2007 MERCURY GRAND MARQUIS. WHILE PULLING UP TO A TRAFFIC LIGHT, THE VEHICLE ACCELERATED FORCEFULLY. THE BRAKE PEDAL WAS DEPRESSED MULTIPLE TIMES, BUT THE VEHICLE ACCELERATED AND TAPPED THE PRECEDING VEHICLE. THERE WERE NO INJURIES AND A POLICE REPORT WAS NOT FILED. THE ENGINE WAS TURNED OFF, RESTARTED, AND THE VEHICLE RESUMED NORMAL OPERATION. THE FAILURE RECURRED ON A SEPARATE OCCASION. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 67,000.
TL* THE CONTACT OWNS A 2007 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE ATTEMPTING TO PARK, THE ENGINE REVVED AND THEN ACCELERATED FORCEFULLY. THE BRAKE PEDAL WAS DEPRESSED MULTIPLE TIMES AND THE VEHICLE ACCELERATED OVER THE PARKING SPACE BLOCK. THE ENGINE WAS TURNED OFF. AFTER RESTARTING, THE VEHICLE RESUMED AS NORMAL. THE FAILURE RECURRED ON A SEPARATE OCCASION. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSIS. THE TECHNICIAN WAS UNABLE TO DUPLICATE THE FAILURE. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 70,766. UPDATED 11/09/15*LJ *CN
TL* THE CONTACT OWNS A 2007 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE VEHICLE WAS STARTED AND AS SHE LIGHTLY DEPRESSED THE ACCELERATOR PEDAL, THE VEHICLE RAPIDLY ACCELERATED AND CRASHED INTO A WALL FROM THE FRONT PASSENGER'S SIDE. THE CONTACT DID NOT SUSTAIN ANY INJURIES. THE VEHICLE WAS TAKEN TO THE DEALER BUT WAS NOT INSPECTED FOR THE CAUSE OF THE FAILURE. THE BODY DAMAGE WAS REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 106,000. *TR
GAS PEDAL WENT ALL THE WAY TO THE FLOOR AND WOULD NOT RELEASE. I KEPT HITTING THE PEDAL TO TRY AND RELEASE IT FOR ABOUT 2 MILES. I KEPT MY FOOT ON THE BRAKE TO TRY AND SLOW THE CAR DOWN, BUT THAT DIDN'T HELP. THE FLOOR MAT WAS NOT UNDER THE PEDAL BECAUSE IT IS TOO SHORT TO REACH IT. AFTER HITTING THE PEDAL AS HARD AS I COULD NUMEROUS TIMES IT RELEASED. *TR
TL* THE CONTACT OWNS A 2007 MERCURY GRAND MARQUIS. THE CONTACT WAS REVERSING FROM A PARKING SPOT AND WHEN SHE SHIFTED INTO DRIVE, THE VEHICLE RAPIDLY ACCELERATED INDEPENDENTLY AND CRASHED INTO A BUILDING. THE CONTACT WAS NOT INJURED. THE VEHICLE WAS TOWED TO A TOW LOT AND WAS NOT TAKEN TO THE DEALER FOR INSPECTION OR REPAIRS. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE AND THE CURRENT MILEAGE WAS 39,000.
TL* THE CONTACT OWNS A 2007 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE VEHICLE WOULD NOT ACCELERATE FROM A STOP. THE CONTACT THEN SHIFTED INTO REVERSE AND THE VEHICLE SURGED BACKWARD UNTIL CRASHING INTO A CONCRETE POST. THE VEHICLE WAS TOWED HOME. THE FAILURE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE AND CURRENT MILEAGES WERE 26,093.
SPEED CONTROL IS NOT WORKING CORRECTLY. *TR
THE BRAKE AND ACCELERATOR PEDALS ARE TOO CLOSE TOGETHER AND AT THE SAME HEIGHT. ON NUMEROUS OCCASIONS, WHEN ATTEMPTING TO BRAKE I FOUND MYSELF ACCELERATING SINCE THE BRAKE AND ACCELERATOR WERE BOTH DEPRESSED. THE PEDALS ARE NOT ADJUSTABLE AND I REALLY HAVE TO CONCENTRATE WHEN BRAKING TO AVOID THE ACCELERATOR PEDAL OR MY CAR JUST KEEPS ON GOING. *TR
2007 MERCURY GRAND MARQUIS ACCELERATOR PROBLEMS. CONSUMER STATES THAT THE THROTTLE IS UP TO HIGH AND HE DOESN'T EVEN HAVE TO PUSH THE ACCELERATOR DOWN, IT AUTOMATICALLY MOVES WHEN IT IS PUT INTO GEAR. *KB THE CONSUMER STATED WHEN HE REMOVED HIS FOOT FROM THE ACCELERATOR, THERE WAS NO NOTICEABLE DECELERATION. THE DEALER INFORMED THE CONSUMER THE THROTTLE CONTROL SENSOR WAS SET AT THE FACTORY AND WAS NOT ADJUSTABLE AT THE DEALER LEVEL. *JB
TL* THE CONTACT OWNS A 2007 GRAND MARQUIS. WHILE DRIVING 25 MPH THE POWER ADJUSTABLE FOOT PEDAL FAILED AND ALMOST CAUSED A COLLISION. AFTER APPLYING THE BRAKE PEDAL THE ACCELERATOR PEDAL ADJUSTED ITSELF WITHOUT WARNING TO THE SAME LEVEL WHICH CAUSED THE DRIVER TO ENGAGE THE ACCELERATOR PEDAL. THE FORD DEALER MISUNDERSTOOD WHAT THE FAILURE WAS, THEREFORE, DIAGNOSING THE VEHICLE TO BE OPERATING NORMALLY. A DIAGNOSIS WAS PERFORMED BY A SEC OND MECHANIC, AND WHILE DRIVING HE WAS ABLE TO DUPLICATE THE FAILURE. THE FAILURE MILEAGE WAS 180, AND THE CURRENT MILEAGE WAS 260. *AK
LTR FWD EMAIL FM (NY) REPORTING INCIDENT OF SUDDEN UNINTENDED ACCELERATION FM OWNER OF A 2007 MERCURY GRAND MARQUIS, REPLY TO MASSAPEQUA PARK DISTRICT OFC. *TGW THE CONSUMER STATED WHILE DRIVING ON THE TURNPIKE, THE VEHICLE SUDDENLY ACCELERATED AND HE COULD NOT STOP IT, UNTIL HE TURNED OFF THE ENGINE AND COASTED QUITE A DISTANCE. THE VEHICLE WAS TOWED TO A FORD DEALERSHIP AND THE DEALER CLAIMED THERE WAS CARBON BUILDUP IN THE AIR FILTER WHICH CAUSED THE SUDDEN ACCELERATION. THE CONSUMER STATED HE EXPERIENCED THE SAME PROBLEM AGAIN. THE CONSUMER BELIEVED IT IS THE SAME PROBLEM TOYOTA'S ARE HAVING. *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