Problems · NHTSA complaints
2010 Mercury Grand Marquis problems
Owners filed 25 complaints about the 2010 Mercury Grand Marquis with NHTSA between Jan 2010 and Oct 2026. The most-cited component is steering (6).
Complaints
25
Filed with NHTSA
Crashes
6
Reported by owners
Fires
0
Reported by owners
Injuries
4
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Steering6
- Structure5
- Electrical system3
- Vehicle speed control3
- Service brakes2
- Exterior lighting2
- Power train2
- Air bags2
- Equipment2
- Wheels1
- Fuel/propulsion system1
- Engine1
- Engine and engine cooling1
- Seat belts1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Nov 9, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
2
4
0
3
5
2
1
1
1
0
0
1
0
2
1
1
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2010 | 2 |
| 2011 | 4 |
| 2012 | 0 |
| 2013 | 3 |
| 2014 | 5 |
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 1 |
| 2022 | 0 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Steering
6 reports2 crashes2 related recalls
“the lower bearing separates, the vehicle may experience a loss of steering, increasing the risk of a crash. Improper servicing of the upper intermediate shaft could cause the shaft to separate, which can then result in a loss of steering control, and increasing the risk of a crash”
Structure
5 reports1 crash
“TL* THE CONTACT OWNS A 2010 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE AIR CONDITIONING UNIT FAILED AND WOULD ONLY EMIT AIR FROM THE DEFROSTER AND UNDER SEAT VENTS. THE CONTACT ALSO STATED THAT THE TRUNK LIGHT ILLUMINATED EVEN THOUGH THE TRUNK WAS CLOSED. THE VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION WHERE THEY STATED THAT THE AIR CONDITIONER AND TRUNK LATCH NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 63,000. UPDATED 09/05/13*LJ”
Electrical system
3 reports
“SPLICING ON ALMOST ALL ELECTRICAL SYSTEMS HAD COME APART. AFFECTED WERE THE RADIO, CLOCK, WINDOWS, POWER SEATS, LIGHTS, DOOR LOCKS, TRUNK RELEASE INSIDE CAR, LOW TIRE MONITOR WARNING LIGHT STAYED ON CONSTANTLY, SEAT BELT WARNING LIGHT STAYED ON, WARNING BELL FOR KEY IN IGNITION STAYED ON EXCEPT WHEN CAR WAS MOVING, DOME LIGHT WOULD NOT GO OFF WHENEVER YOU GOT OUT OF CAR. SOME OF THESE PROBLEMS WERE CONSTANT AND SOME WERE INTERMITTENT. AS A RESULT OF THE LOCKING PROBLEM, OUR VEHICLE WAS STOLEN, BUT THANKFULLY FOUND WITH NO DAMAGE. WITH NO HELP FROM OUR LOCAL FORD DEALER, I FINALLY CALLED THE FORD MOTOR CO. COMPLAINT DEPT. AND WAS TOLD TO GET A DIAGNOSTIC TEST RUN ON IT, WHICH I DID AT ANOTHER DEALERS, AND THAT IS WHEN THEY FOUND THE WIRING SPLICING PROBLEM. AS A RESULT OF THE ELECTRICAL PROBLEMS, IT HAS BLOWN THE MOTORS WHICH CONTROL BOTH THE POWER SEATS. I HAVE HAD THE WIRING FIXED BUT NOT THE MOTORS REPLACED DUE TO THE EXPENSE INVOLVED. I FEEL LIKE I HAVE A REAL LEMON ON MY HANDS AS WELL AS AN UNSAFE VEHICLE. *TR”
Vehicle speed control
3 reports2 crashes
“YESTERDAY, TUESDAY 23, 2014, I BACKED OUT OF A PARKING SPOT ON THE PARKING DECK ABOUT 15 FEET AND PUT THE CAR IN DRIVE. IT LURCHED FORWARD AT A TREMENDOUS HIGH SPEED AND ALTHOUGH I HIT THE BRAKES, THE AUTO SLAMMED INTO THE RETAINING WALL AT THE PARKING SPOT I HAD JUST BACKED OUT OF. I WAS WEARING MY SEAT BELT AND THE AIR BAG DEPLOYED. I RECEIVED MINOR BRUISING ON MY ARMS, LEGS AND RIBS DUE TO THE AIR BAG DEPLOYMENT. THIS AUTO HAS SIDE AIR BAG AS WELL, BUT ONLY THE DRIVE AIR BAG DEPLOYED. I WAS CHECKED OUT BY A MEDIC, WHO WAS STAYING AT THE RESORT AND HEARD THE CRASH. THERE WERE NO WITNESSES. EMS ARRIVED AND CHECKED ME OVER. A POLICE REPORT WAS FILED. ..UPDATED 06/26/14 *BF”
Service brakes
2 reports1 crash
“The contact owns a 2010 Mercury Grand Marquis. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed, however, the vehicle failed to stop as intended. The contact stated that he had both feet on the brake pedal, however the vehicle did not stop. The vehicle independently accelerated. The contact stated that the wheels were squealing. The contact stated that the failure occurred while approaching a stop light. The contact's vehicle rear-ended the vehicle in front of his vehicle. The contact's vehicle was damaged to the front bumper. The vehicle was driven to the contact's residence. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 75, 000.”
Exterior lighting
2 reports1 crash
“INTERMITTANTLY BOTH HEADLIGHTS FLICKERING. LIGHTING CONTROL MODULE (LCM) PROBLEM ?”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.