NHTSA — Vehicle Speed Control Problems

10.0

really awful
Crashes / Fires:
3 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
30,375 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.

1999 Mercury Grand Marquis engine problems

engine problem

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1999 Mercury Grand Marquis Owner Comments

problem #8

Apr 012016

Grand Marquis

  • miles

A D V E R T I S E M E N T S

The passengers side seat beat comes undone at times and the speed sensor works intermittently and it leaks gas from around the fuel pump

- Tulare, CA, USA

problem #7

Dec 112014

Grand Marquis

  • 108,000 miles
My car was in drive at a business traffic intersection drive way on a slight hill with the brakes on when the engine surged and the car started to reverse while still in drive. I had to put considerable pressure on the brakes to stop it. I checked and the shift lever was still in drive. My car has been properly maintained and was recently serviced with all required services done. This really scared me and I would have crashed into a car if it was behind me. Ford should look into this safety problem.

- Beverly Hills, FL, USA

problem #6

Mar 252008

Grand Marquis

  • 135,000 miles
The contact owns a 1999 Mercury Grand Marquis. While driving at any speed, the traction control light flashed and the vehicle lost acceleration. The contact attempted to accelerate, but the speed would not increase. The dealer charged $100 for a diagnosis, but could not duplicate the failure. The contact is afraid that a crash could occur. The manufacturer was notified; however, they felt that the complaint was unimportant. The failure mileage was 135,000.

- Gilford, NH, USA

problem #5

Jan 082002

Grand Marquis

  • miles

A D V E R T I S E M E N T S

While slowly parking vehicle, consumer states the vehicle all of a suuden lunged foward in full acceleration, it jumped the parking bumper and into the vehicle in the opposite parking space, sideswiped another vehicle and pushed the first vehicle into a third vehicle, the brakes had no effect in stopping the vehicle.

- Largo, FL, USA

problem #4

Aug 042000

Grand Marquis

  • miles
I pulled up to an intersection, the car accelerated rapidly. I mashed brakes but car kept on rapidly accelerating, tires screeching and peeling rubber. I had to turn off ignition to stop car.

- Dallas, TX, USA

problem #3

Nov 061999

Grand Marquis

  • Automatic transmission
  • miles
Vehicle downshifted into passing gear while driving down a hill and vehicle accelerated. Brakes did not response, causing consumer to run into a bus and telephone pole. Also, dual airbags did not deploy. But, cover came off, resulting in a broken hip and pelvis. Prior to this accident consumer was complaining about transmission. But, dealer stated it was not important.

- Wayne, NJ, USA

problem #2

Sep 141999

Grand Marquis

  • Automatic transmission
  • miles
While sitting in traffic vehicle jumped out of gear and lunged forward, rear ending another vehicle.

- Mount Pleasant, SC, USA

problem #1

Sep 291999

(reported on)

Grand Marquis

  • miles
The vehicle accelerated forward with the drivers foot on the brake pedal, and hit another vehicle in front of it. Dlr has seen vehicle.

- Mt. Pleasant, SC, USA

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