2009 Mercury Grand Marquis Brakes Problems
- Complaints
- 6about this part
- Share
- 23%of 26 total for the year
- Median mileage
- 20,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the brakes of the 2009 Mercury Grand Marquis, 23% of the 26 complaints for this model year. Where a mileage was given, the median is 20,000 miles. 1 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I was driving at 45 MPH and applied the brake to stop. The engine revved to 2,000 RPM. I was able to stop with very hard braking using both feet. The engine continue revving at 2,000 RPM even after the car had stopped. I placed the transmission in neutral and the engine revved even faster. The engine did not slow down until I turned off the ignition. After leaving the engine off for around two minutes, I restarted the engine and it resumed running at around 500 RPM. …”
NHTSA complaint #10514506, filed 2013-05, 27,000 miles“I applied the brakes at around 20 miles per hour on january 25 and the motor accelerated for one or two seconds. I was able to stop the car by pressing the brakes much harder than normal. On january 26 I applied the brakes at around 60 miles per hour and the motor again accelerated for one or two seconds. I continued to press the brakes, the motor slowed down and the car eventually slowed. It sounded like pressing the accelerator down hard to pass another car on a two lane road.”
NHTSA complaint #10445617, filed 2012-01, 15,000 miles“My wife was driving around 25 MPH and less than one mile from our house. When she applied the brakes to stop at a stop sign the engine revved up. I was riding with her and observed the engine rev to around 2,500 RPM before slowing down. I also observed that her right foot was on the brake and that nothing was touching the accelerator. The cruise control had not been turned on. This was at least the fourth time this year that the engine revved up when the brakes were applied. The dealer could not find the problem and the engine did not rev while the dealer was testing the car.”
NHTSA complaint #10490380, filed 2012-12, 20,000 miles“An SUV crashed into an apple store in Hingham Mass. The driver told police his foot became stuck to the gas pedal. More likely his foot became hooked under the brake pedal as he tried to quickly shift his foot from the gas pedal up and to the left onto the brake pedal. This has happened to me several times after accelerating and then having to make a 'panic' stop. I had to quickly wiggle-foot from under to the top of the brake pedal. Brake pedals should be changed from a T shaped to a 7 shaped configuration. This would eliminate the hook. …”
NHTSA complaint #11503443, filed 2023-01“The contact owns a 2009 Mercury Grand Marquis. While driving 30 MPH, the vehicle failed to respond when the brake pedal was depressed and the vehicle independently accelerated. The contact was able to stop the vehicle by switching to the park position. The vehicle was taken to a dealer where it was diagnosed, but the contact was unaware of the diagnosis. The vehicle was repaired, but the failure recurred. The manufacturer was notified of the failure. The failure mileage was 37,000.”
NHTSA complaint #10860258, filed 2016-04, 37,000 milesBrakes: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2011 | 1 | 11% |
| 2010 | 2 | 8% |
| 2009 | 6 | 23% |
| 2008 | 10 | 13% |
| 2007 | 6 | 6% |
| 2006 | 12 | 8% |
| 2005 | 18 | 4% |
| 2004 | 7 | 2% |
| 2003 | 7 | 2% |
| 2002 | 6 | 8% |
| 2001 | 16 | 10% |
| 2000 | 18 | 11% |
| 1999 | 9 | 5% |
| 1998 | 7 | 5% |
| 1997 | 35 | 11% |
| 1996 | 23 | 10% |
| 1995 | 30 | 17% |
| 1994 | 19 | 12% |
| 1993 | 22 | 15% |
| 1992 | 48 | 19% |
| 1991 | 13 | 16% |
| 1990 | 8 | 14% |
| 1989 | 6 | 10% |
| 1988 | 2 | 3% |
| 1986 | 2 | 10% |
| 1983 | 1 | 14% |
Other parts of the 2009 Mercury Grand Marquis
5 complaintsElectrical system
4 complaintsVehicle speed control
4 complaintsFuel system
3 complaintsEngine
2 complaintsSuspension
2 complaintsTires
2 complaintsTransmission and drivetrain
2 complaintsAir bags
1 complaintsExterior lighting
1 complaintsSeat belts
1 complaintsBody and structure
1 complaints
← All problems reported for the 2009 Mercury Grand Marquis
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology