NHTSA — Vehicle Speed Control: Accelerator Pedal Problems


really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
2 / 0
Average Mileage:
19,033 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2005 Mercury Grand Marquis engine problems

engine problem

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2005 Mercury Grand Marquis Owner Comments

problem #3

May 012009

Grand Marquis 8-cyl

  • Automatic transmission
  • 25,000 miles


The contact owns a 2005 Mercury Grand Marquis. The contact stated that the brake and accelerator pedals were positioned very close to one another. As a result, the contact experienced a failure in which he depressed both pedals simultaneously. The failure was experienced several times. The vehicle was not taken to a dealer to have the failure diagnosed or repaired. The manufacturer was made aware of the failure and offered no assistance. Updated 09/06/2012

- Glendale, AZ, USA

problem #2

Jun 012007

Grand Marquis 8-cyl

  • Automatic transmission
  • 31,900 miles
The contact owns a 2005 Mercury Grand Marquis. While driving 2 mph, the vehicle accelerated without warning to approximately 75 mph. The contact depressed the brake pedal, but the vehicle failed to stop. The failure caused her to crash into a fire hydrant. The driver sustained a broken back and the front seat passenger sustained a bruised bowel and internal bleeding. The vehicle was destroyed. As of July 16, 2007, the dealer has been unable to diagnose the cause of failure. The current mileage is 32,000 and failure mileage was 31,900.

- Belgrade, MT, USA

problem #1

Feb 122005

Grand Marquis 8-cyl

  • Automatic transmission
  • 200 miles
When applying brake pedal pressure the pedal goes past the accelerator to the floor, most often this occurs when starting the vehicle and placing it in gear. When this occurs it is easy to hit the gas pedal as well when trying to apply brake pressure. This causes the tires to squeal and the car to lunge forward. Has been to a dealer who said he would have a service manager call the consumer about this problem, but he never returned the call. The service representative noted there was nothing wrong. No repairs or changes have been made.

- Oklahoma City, OK, USA

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