There are 8 stored owner reports matching the brakes leading-label group for the 2006 Mercury Grand Marquis in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 8 of 8 matching reports.
Open the full vehicle complaint log (all categories)WHEN PARKING A NEWLY ACQUIRED USED 2006 MERCURY GRAND MARQUIS AT IDLE SPEED IN A LOCAL SHOPPING CENTER, THE ENGINE ACCELERATED AND THE HARDER I PRESSED THE BRAKE THE FASTER THE ENGINE RAN. TO THE EXTENT THE TRACTION CONTROL ACTIVATED AND THE WHEELS SPUN IN PLACE. THE ONLY WAY I PREVENTED CRASHING INTO THREE PARKED WAS TO SHIFT THE TRANSMISSION INTO NEUTRAL WITH THE ENGINE RACING. WHAT APPARENTLY HAPPENED WAS MY FOOT WAS NOT CENTERED ON THE BRAKE PEDAL AND THE PEDAL TRAVELED TO THE POINT WHERE I WAS ALSO PRESSING ON THE ACCELERATOR. EVIDENTLY THE TRAVEL DISTANCE OF THE BRAKE PEDAL WAS SO LONG I PRESSED ON THE ACCELERATOR PEDAL AT THE SAME TIME. I TOOK THE CAR TO A MERCURY DEALER AND WAS TOLD THIS WAS A COMMON PROBLEM, BUT HE COULD NOT CORRECT IT BECAUSE THE BRAKE AND ACCELERATOR PEDALS WERE OPERATING AS DESIGNED. THE DEALERS TECHNICIAN REPORTED THAT MY COMPLAINT WAS THAT THE PEDALS SEEMED TO CLOSE TOGETHER. THIS MAY BE TRUE, BUT THE PROBLEM IN MY MIND IS THE TRAVEL DISTANCE OF THE BRAKE PEDAL. I WAS ALSO TOLD FORD HAS NOT AS YET ISSUED A SOLUTION TO THIS SAFETY PROBLEM. *TR
TL*THE CONTACT OWNS A 2006 MERCURY GRAND MARQUIS. WHILE DRIVING 10 MPH, THE VEHICLE LUNGED FORWARD WHEN THE BRAKES WERE DEPRESSED. THE FAILURE FELT AS IF THE BRAKE AND ACCELERATOR PEDALS WERE BEING DEPRESSED SIMULTANEOUSLY. THE CONTACT'S WIFE ALSO ATTEMPTED TO DEPRESS THE BRAKES ONCE AND SHE STRUCK A STOP SIGN. THERE WERE NO INJURIES. THE VEHICLE HAS NOT BEEN SERVICED AS OF YET. THE CURRENT AND FAILURE MILEAGES WERE 21,800. * UPDATED 12/12/07 *BF THE CONSUMER STATED THE BRAKE PEDAL WAS DESIGNED TOO CLOSE TO THE ACCELERATOR PEDAL. THE CONSUMERS WIFE HIT A STOP SIGN CAUSING DAMAGE TO THE FRONT BUMPER. UPDATED 12/12/07 UPDATED
2006 MERCURY GRAND MARQUIS WITH BRAKE PEDAL PROBLEMS**CC THE CONSUMER STATED THE LAST TIME HE EXPERIENCED A PROBLEM WITH THE BRAKES, AN ACCIDENT OCCURRED. THE CONSUMER STATED HIS FOOT BECAME CAUGHT UNDER THE GAS PEDAL. *JB
DT*: THE CONTACT STATED WHILE NORMALLY APPLYING THE BRAKES, THE VEHICLE LURCHED FORWARD SUDDENLY, REQUIRING EXTREME PRESSURE ON THE BRAKE PEDAL TO STOP THE VEHICLE. IT WAS TAKEN TO A SERVICE DEALER, WHO WAS UNABLE TO DETERMINE THE PROBLEM. UPDATED 10/18/2006 - PRIOR TO THE ABOVE INCIDENT THE VEHICLE LURCHED FORWARD WHILE APPROACHING A STOPLIGHT. THE MORE PRESSURE THE CONSUMER APPLIED TO THE BRAKE PEDAL THE MORE THE ENGINE RACED. THE VEHICLE CONTINUED TO TRAVEL FORWARD THROUGH THE CROSSWALK AND INTO THE STREET. LUCKILY NO ONE WAS IN THE CROSSWALK AND NO CARS WERE COMING THROUGH THE INTERSECTION. THE CONSUMER HAS TO TURN THE VEHICLE OFF TO GET IT TO STOP. *NM
TL*THE CONTACT OWNS A 2006 MERCURY GRAND MARQUIS. AFTER ATTEMPTING TO STOP AT A STOP LIGHT, THE CONTACT DEPRESSED THE BRAKE PEDAL, BUT THERE WAS NO RESPONSE. HE HAD TO PUMP THE BRAKES TWICE IN ORDER TO STOP THE VEHICLE. THE DEALER COULD NOT REMEDY THE FAILURE. APPROXIMATELY ONE MONTH LATER, THE FAILURE RECURRED. THE DEALER COULD NOT DUPLICATE THE FAILURE AGAIN. THE FAILURE OCCURRED SEVEN PREVIOUS TIMES, IN WHICH THE VEHICLE WAS TAKEN TO THE DEALER FOUR OF THOSE TIMES. THE VEHICLE HAS NOT BEEN REPAIRED. THE SPEED WAS UNKNOWN. THE FAILURE MILEAGE WAS 190 AND CURRENT MILEAGE WAS 37,000.
DT*: THE CONTACT STATED WHILE DEPRESSING THE BRAKE PEDAL, THE DRIVER'S FOOT MADE CONTACT WITH BOTH ACCELERATOR PEDAL AND BRAKE PEDAL AT THE SAME TIME. THIS DUAL CONTACT RESULTED IN UNWANTED ACCELERATION ON FIVE OCCASIONS. THE VEHICLE WAS INSPECTED BY THE DEALER WHO DETERMINED THE BRAKE AND ACCELERATOR WERE OPERATING NORMALLY.
WHEN APPLYING THE BRAKES, UNWANTED ACCELERATION OCCURRED CAUSING THE CAR TO LUNGE FORWARD. THE MANAGER OF THE REPAIR DEPARTMENT TOOK A RIDE WITH ME TO SEE IF MY FOOT HIT BOTH THE BRAKE AND THE GAS PEDAL. HE ACKNOWLEDGED IT WAS PHYSICALLY IMPOSSIBLE. THE REPAIR DEPT. COULD NOT FIND THE CAUSE OF THE PROBLEM. NOTHING WAS DONE TO CORRECT THE PROBLEM. IT HAS HAPPENED AGAIN (5TH TIME) WHEN I HAD TWO OF MY GRANDCHILDREN WITH ME! I HAVE ANOTHER APPOINTMENT WITH THE DEALERSHIP. *JB
DT*: THE CONTACT STATED WHILE ATTEMPTING TO APPLY BRAKE PRESSURE AT LOW SPEEDS THE BRAKES FAILED, CAUSING THE VEHICLE TO ACCELERATE. THE DEALERSHIP WAS UNABLE TO DUPLICATE THE PROBLEM. UPDATED 05/30/06. *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.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.