IllustrationDT: THE CONSUMER OWNS A 1989 MERCURY GRAND MARQUIS. THE ENGINE REVVED UP WHICH CAUSED THE VEHICLE TO MOVE FORWARD WHILE HE HAD HIS FOOT ON THE BRAKE. THE FIRST TIME THIS INCIDENT HAPPENED IT DID NOT CAUSE AN ACCIDENT, BUT THE SECOND OCCURRENCE, HE REAR ENDED ANOTHER VEHICLE. *JB *SC
1989 Mercury Grand Marquis
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 1989 Mercury Grand Marquis do not stand out strongly from the model-year median of 78.
About this comparison →How this year compares
Owner complaints by model year
Compare all Grand Marquis years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 4 of 58 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 16 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Vehicle Speed Control. Review the 14 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
8 crash reports17 fire reports2 injury reports
Vehicle Speed Control complaints
14 reportsTHE VEHICLE EXPERIENCED UNWANTED ACCELERATION, AND CRASHED INTO A TREE. *TS *JB
VEHICLE EXPERIENCED SUDDEN ACCELERATION RESULTING IN COLLISION AND INJURIES. MJS
WHILE ENGAGED IN CRUISE CONTROL VEHICLE EXPERIENCED SUDDEN ACCELERATION.
CONSUMER EXPERIENCING PROBLEM WITH VEHICLE ACCELERATION. WHILE PULLING INTO AN INTER SECTION, WAITING ON TRAFFIC LIGHT TO CHANGE, VEHICLE STARTED TO ACCELERATE. CONSUMER PRESSED DOWN ON BRAKES TO PREVENT VEHICLE FROM HITTING ANOTHER VEHICLE. CONSUMER WAS ABLE TO CHANGE GEAR INTO NEUTRAL, AND TAPPING ON ACCELERATOR PEDAL WAS ABL…
Read full complaint
CONSUMER EXPERIENCING PROBLEM WITH VEHICLE ACCELERATION. WHILE PULLING INTO AN INTER SECTION, WAITING ON TRAFFIC LIGHT TO CHANGE, VEHICLE STARTED TO ACCELERATE. CONSUMER PRESSED DOWN ON BRAKES TO PREVENT VEHICLE FROM HITTING ANOTHER VEHICLE. CONSUMER WAS ABLE TO CHANGE GEAR INTO NEUTRAL, AND TAPPING ON ACCELERATOR PEDAL WAS ABLE TO DISENGAGE THE ACCELERATION. ALSO CRUISE CONTROL WAS NOT ENGAGED AT THE TIME. DEALER/MFR. NOTIFIED AND REFUSED TO ACCEPT RESPONSIBILITY. CAN NHTSA HELP IN THIS MATTER. *AK
IN ONLY 3 OCCURRENCES WHEN STARTING VEHICLE, IT WOULD LEAP FORWARD UNEXPECTEDLY WHICH MAY CAUSE AN ACCIDENT. DEALER CANNOT DETERMINE PROBLEM. PLEASE PROVIDE FURTHER INFORMATION. *AK
WHILE DRIVING ON HIGHWAY AT 60 MPH WITH CRUISE CONTROL ON, CRUISE CONTROL FAILED TO DISENGAGE, CAUSING VEHICLE TO ACCELERATE TO 85 MPH. *AK
UPON STEPPING ON GAS PEDAL, THROTTLE STUCK WIDE OPEN, CAUSING VEHICLE TO ACCELERATE OUT OF CONTROL, RESULTIN GIN AN ACCIDENT. *AK
WHEN DRIVING THE CAR, SOMTIMES CAR ACCELERATES. PLEASE DESCRIBE . *AK
SUDDEN ACCELERATION, CAUSING ACCIDENT. *SD
Official recalls
196V071000 · Electrical System:ignition
Apr 25, 1996
THE IGNITION SWITCH COULD EXPERIENCE AN INTERNAL SHORT CIRCUIT.
Consequence & remedy
Consequence: THIS CONDITION COULD CAUSE OVERHEATING, SMOKE, AND POSSIBLY FIRE IN THE STEERING COLUMN AREA OF THE VEHICLE.
Remedy: DEALERS WILL REPLACE THE IGNITION SWITCH.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1PE91125 · Brake Line Punctures
Opened Sep 11, 1991 · Closed Jan 15, 1992
Status: closed (inferred from source dates) · Service Brakes, Hydraulic
There is no summary currently available