If you find CarComplaints.com is helpful ... We rely completely on word of mouth. Talk about us on Facebook, Twitter, tell your mother-in-law. Help us help more people.


really awful
Crashes / Fires:
2 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
43,527 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.

2000 Mercury Grand Marquis engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2000 Mercury Grand Marquis:

Unsubscribe any time. We don't sell/share your email.

2000 Mercury Grand Marquis Owner Comments

problem #6

Sep 012006

Grand Marquis 8-cyl

  • Automatic transmission
  • 35,000 miles


The contact owns a 2000 Mercury Grand Marquis. While driving at various speeds between 5 and 10 mph the vehicle accelerated on its own and the brakes would not stop the vehicle. To stop the vehicle, the contact had to put the vehicle in neutral. The failure mileage was 35,000. There were no warning indicator lights illuminated. The current mileage was 37,000. The consumer stated that he previously put the car in reverse and it took off he kept braking but the vehicle wouldn't stop and damaged the front end of the car. Update 05/22/07

- Long Island City, NY, USA

problem #5

Jul 012006

Grand Marquis 8-cyl

  • Automatic transmission
  • 88,000 miles
: the contact stated the engine revved for no apparent reason and the check engine light illuminated previously. The vehicle has not be taken to the dealer. The vehicle had one accident about 2.5 years ago when the vehicle hit a deer. The dealer determined then that there were no engine problems after the accident, only damage to the body of the vehicle. The contact expressed that on two occasions while the vehicle was being parked, the engine has surpassed 5000 rpms.

- Merrillville, IN, USA

problem #4

Feb 042004

Grand Marquis

  • Automatic transmission
  • 108,161 miles
The vehicle accelerated while on the highway to 60 mph. The consumer put the vehicle into neutral to slow it down. After taking it to the garage the RPM(s) were completely open. The idle valve was found to be defective and replaced.

- Raleigh, NC, USA

problem #3

Oct 222004

Grand Marquis 8-cyl

  • Automatic transmission
  • 30,000 miles


While driving 70 mph vehicle stalled. Cruise control was engaged. After waiting for a little while the vehicle was restarted. Vehicle continued to run for a while before it stalled again. Vehicle was towed to a repair shop, and nothing could be found.

- Pine Beach, NJ, USA

problem #2

Dec 192000

Grand Marquis

  • miles
While making a left turn and then a right turn hit brakes, instead of vehicle slowing down or stopping it accelerated, causing consumer to hit a nearby building. Consumer sustained a minor injury.

- Fairless Hills, PA, USA

problem #1

Dec 012000

Grand Marquis

  • Automatic transmission
  • miles
While cruise control is activated it will turn off unexpectedly. In one case trottle opened and driver had to turn off vehicle, which almost caused a crash. The cruise control failed ten times.

- Hugo, OK, USA

Not what you are looking for?