general problems of the 2008 Mercury Grand Marquis

Eight problems related to service brakes have been reported for the 2008 Mercury Grand Marquis. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Mercury Grand Marquis based on all problems reported for the 2008 Grand Marquis.

1 Service Brakes problem

Failure Date: 03/08/2021

I was driving in town and several times when I slowed down to stop at a stop sign or corner, after braking my car accelerated by itself. The engine revved up and made the car jump forward. I had to slightly release the brake snd brake harder to stop and avoid going into the intersection.

2 Service Brakes problem

Failure Date: 08/25/2013

When reversing out of driveway car accelerated on its own. Pressed brakes but car still moved backwards. Have skid marks in driveway to show for it. Threw car into neutral and turned off engine. Restarted and everything seemed normal. Drove car on trip and when reducing speed to slow down by pushing on brake car again accelerated and nearly hit another car. Again threw car into neutral and turned off engine. And again when restarting car everything seemed normal again. Wife is extremely afraid of driving car. Took car to dealer where it was purchased and was told that it may have been that I pushed the brake and gas pedal at the same time, this however, I believe is not the case. Dealership however kept the car for further investigation as to what the problem may be. Will hear in a day or two,.

3 Service Brakes problem

Failure Date: 08/14/2013

Vehicle was purchased used in June, 2011. While braking for a stop light, vehicle suddenly accelerated. Had to forcefully pump brakes to stop vehicle from hitting vehicle in front. Car returned to normal operation as soon as I got it stopped. Have had similar incidents a couple of times before, although not as bad as this one, however, at that time I thought maybe I had accidentally pressed the accelerator while braking. I know that was not the case this time.

4 Service Brakes problem

Failure Date: 06/13/2012

Car speeding up while braking.

5 Service Brakes problem

Failure Date: 10/27/2010

On October 27, 2010, my wife was driving with me in the car and she started to brake for a red light. She was going about 30 miles per hour. As soon as she applied the brake, the engine accelerated and she had to use a large amount of braking pressure to stop the car. As soon as the car stopped, she took her foot off the brake and the engine returned to idle. Yesterday, I was driving the car at approximately 55 mile per hour and started to move into the passing lane when the traffic light ahead turned red. I applied the brake and the same thing happened. I had to apply a large amount of pressure on the brake peddle in order to stop the car while the engine raced on. As soon as the car stopped, the engine returned to idle and the problem was over. Yesterday, I took the car to the dealership where it was purchased and they kept the car overnight to run various tests. They found nothing. I picked the car up this afternoon and am going to now take it to another dealer for inspection.

6 Service Brakes problem

Failure Date: 05/19/2009

Brake and gas pedal to close together when applying brakes also hit gas has happened many times almost requires a conscious effort to avoid this problem.

7 Service Brakes problem

Failure Date: 11/11/2008

The contact owns a 2008 Mercury Grand Marquis. While driving 65 mph on a two lane road, the vehicle accelerated when the brake pedal was depressed. The contact rear ended the preceding vehicle. The contact was injured. The air bags failed to deploy and the seat belt did not tighten. The failure and current mileages were 17,000. Remailed 12/10/08.

8 Service Brakes problem

Failure Date: 09/29/2008

The vehicle accelerateds when the brake pedal is depressed. Because the brake pedal and the gas pedal height is nearly the same height and when depressing the brake pedal you can also depress the gas pedal causing the vehicle to accelerate. The vehicle accelerates when the brake pedal was depressed.


Other Service Brakes related problems of the 2008 Mercury Grand Marquis



Fuel Economy of Grand Marquis Vehicles
Grand Marquis Service Bulletins
Grand Marquis Safety Recalls
Grand Marquis Defect Investigations