Problems · by component
2001 Mercury Grand Marquis vehicle speed control problems
30 owner complaints to NHTSA about the 2001 Mercury Grand Marquis cite vehicle speed control, 16% of all 183 complaints for this model year.
Complaints
30
16% of all complaints
Crashes
8
Reported by owners
Fires
0
Reported by owners
Injuries
7
Reported by owners
What owners say about the vehicle speed control
Verbatim from NHTSA complaints, newest first
“TL* THE CONTACT OWNS A 2001 MERCURY GRAND MARQUIS. THE CONTACT STATED WHILE DRIVING 70 MPH, THE ACCELERATOR PEDAL FAILED TO RETURN TO THE ORIGINAL POSITION AFTER BEING DEPRESSED. THE CONTACT HAD TO LIFT THE ACCELERATOR PEDAL WITH HIS FOOT IN ORDER TO GET THE VEHICLE TO SLOW DOWN. THE CONTACT STATED NO WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS NOT TAKEN TO A DEALER OR INDEPENDENT MECHANIC FOR DIAGNOSIS OR REPAIRS. THE MANUFACTURER HAD NOT BEEN INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 50,000. THE VIN WAS UNAVAILABLE.*DT*JB”
“TL* THE CONTACT OWNS A 2001 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE DRIVING AT 65 MPH, THE VEHICLE ACCELERATED RAPIDLY WITHOUT WARNING. THE CONTACT TRIED TO DEPRESS THE BRAKE PEDAL AND DISENGAGED THE CRUISE CONTROL BUT NEITHER ATTEMPTS TO SLOW THE VEHICLE WERE SUCCESSFUL. THE CONTACT WAS ABLE TO SLOW THE VEHICLE DOWN ONLY BY DEPRESSING THE ACCELERATOR PEDAL AGAIN AFTER A PERIOD OF UNINTENDED ACCELERATION. THE DEALER WAS NOT CONTACTED ABOUT THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE AND REFERRED THE CONTACT TO THE DEALER. THE FAILURE MILEAGE WAS 88,000. UPDATED 10/24/17*LJ”
“TL* THE CONTACT OWNS A 2001 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE VEHICLE ACCELERATED WITHOUT WARNING. THE DEALER WAS UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 50,000.”
“TL* THE CONTACT OWNS A 2001 MERCURY GRAND MARQUIS. WHILE THE VEHICLE WAS STOPPED, THE VEHICLE ACCELERATED WITHOUT WARNING. THE CONTACT WAS ABLE TO PULL OVER TO THE SIDE OF THE ROAD. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED, BUT THE TECHNICIAN COULD NOT DETERMINE THE CAUSE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 218,000. THE VIN WAS NOT AVAILABLE.”
“TL* THE CONTACT OWNS A 2001 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 70 MPH, THE VEHICLE WAS JERKING AND THE ABS AND THE CHECK ENGINE WARNING LIGHTS ILLUMINATED. THE VEHICLE HAD A DRASTIC REDUCTION IN SPEED. THE VEHICLE WAS RESTARTED. THE VEHICLE WAS TAKEN TO THE DEALER ON SEVERAL OCCASIONS WHERE IT WAS REPAIRED BUT THE REPAIR DETAILS WERE UNKNOWN. THE REPAIRS FAILED TO REMEDY THE VEHICLE. THE CONTACT STATED THE SERVICE ENGINE WARNING LIGHT CONTINUED TO ILLUMINATED AND THE VEHICLE JERKED VIOLENTLY, REDUCED SPEED AND ATTEMPTED TO STALL. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 136,037. UPDATED 12/03/15*LJ”
“I WAS TURNING INTO MY DRIVE WAY AND THE CAR ALL OF A CERTAIN ACCELERATED TO A SPEED UP AND I IMMEDIATELY JUMP ON TO THE BRAKE TO STOP THE CAR AND IT CRASHED INTO THE BACK FENCE . I GOT OUT THE CAR TO CHECK AND SEE IF THE PEDAL HAD THE FLOOR MAT ON IT AND THEIR WAS NOTHING ON IT. *TR”
Showing 6 of 30 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.