2008 Mercury Grand Marquis Problems & Complaints

Most common 2008 Mercury Grand Marquis problems

• Steering~66,000 miles
  2329%
• Speed control & acceleration~27,000 miles
  1519%
• Brakes~53,000 miles
  1013%
• Engine & cooling~53,000 miles
  911%
• Electrical system~58,000 miles
  911%
• Body & structure~42,000 miles
  911%
• Lights~80,000 miles
  56%
• Fuel & propulsion system~75,000 miles
  45%
• Other / not specified~4,000 miles
  34%
• Air bags~63,000 miles
  34%
• Seat belts~230,000 miles
  34%
• Transmission & drivetrain~128,000 miles
  34%
• Equipment & accessories~10,000 miles
  23%
• Stability & traction control~56,000 miles
  23%
• Suspension~2,000 miles
  11%
• A/C & heater~64,000 miles
  11%
• Seats~63,000 miles
  11%

Share of the 80 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.

Mercury Grand Marquis complaints by model year

Best Grand Marquis years: 2011, 2010, 2009. Years to avoid: 2005, 1997, 1996, 2003. Compare all years →

2008 Mercury Grand Marquis recalls (3)

NHTSA defect investigations

Federal safety investigators have looked into a possible defect involving the 2008 Mercury Grand Marquis:

What 2008 Mercury Grand Marquis owners say

Steering all 23 →

The contact owns a 2008 Mercury Grand Marquis. The contact stated while driving approximately 70 MPH, the steering felt loose. The contact stated that the power steering was still operable however, the vehicle would drift to the left or right with no input on the steering wheel. The contact stated that he would correct the steering and the vehicle would continue to drift to the right and to the left. The contact stated no warning light was illuminated. The contact stated that he drove the vehicle to an independent mechanic. The vehicle was diagnosed and the mechanic related the failure to NHTSA Campaign Number: 13V385000 (Steering). The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 68,000.

The contact owns a 2008 Mercury Grand Marquis. The contact stated that the vehicle was included in NHTSA Campaign Number: 13V385000 (Steering). The vehicle was taken to the dealer and the lower intermediate shaft was replaced. The contact stated that it was determined that the upper intermediate shaft and steering column lower bearing did not need to be replaced at the time. Several years after the recall repair was completed, the steering column began lowering unintendedly, and a zip tie was used to keep it in place. The dealer was not contacted. The manufacturer was informed of the failure and informed the contact that the vehicle was no longer covered under the recall. The failure mileage was approximately 140,000.

Speed control & acceleration

Update on odi number 10208094. On the day the Mercury that I own was returned to the dealer to solve the safety problem, an accident occurred within 10 miles of my home. The vehicle was a late model Lincoln town car. One person was pronounced dead at the hospital and the driver died a few days later. The following is a quote from the next day brevard county florida local newspaper (florida today). ?the traffic circle at the intersection of wickham road and lake andrew drive was beginning to hum with the rush of Friday evening traffic when a light blue sedan hit the curb and crashed through some bushes into a retention pond.? ?some said the car made a noise like a roaring freight train as it plunged into the water. A few said it shot off like a rocket.? End of quote. It is time some one pays attention to the seriousness this safety problem. …

Tl* the contact owns a 2008 Mercury Grand Marquis. The contact stated that while depressing the brake pedal and driving approximately 5 MPH, the RPM reading increased as the vehicle jerked forward. The contact stated all the warning lights on the instrument panel illuminated. The failure recurred various times causing a crash. The contact was driving approximately 60 MPH when the vehicle accelerated, causing the contact to crash into a guard rail and a concrete wall. The police reported to the scene and a report was filed. The vehicle was towed to the dealer for diagnosis where the technician was unable to diagnose the failure. The manufacturer was made aware of the failure. The vehicle was not repaired. The approximate failure mileage was 17,869.

Brakes

Tl 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.

Thank goodness, there wasn't an accident. Rather, I heard that you should check your emergency brake cable every 50,000 miles. However, my car is so low mileage for its age that I decided I should have the cable checked anyhow. Then, I heard that many of the aftermarket emergency cables are defective. Thankfully, my son, [redacted] , knows someone who can check the cables. We tested cables from two auto parts retail stores. One failed to hold pressure. The other cable exploded rather dramatically. Fortunately, the people my son knows make emergency cables. From outward appearance, the cable they made was definitely superior. More importantly, when they tested the cable, it held pressure without dropping at all. My son once picked up his car from an auto repair shop (about eight years ago) after having the brakes done. …

2008 Mercury Grand Marquis engines & fuel economy

EPA ratings. Class: Large car.