2010 Mercury Grand Marquis: Reliability Data

Source: NHTSA — 35 complaints
35
Total Complaints
50,000mi
Median Mileage
STEERING
Top Issue
13
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

26,500 25th Percentile
50,000 Median Mileage
63,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

STEERING
5
STRUCTURE:BODY
4
VEHICLE SPEED CONTROL
3
ELECTRICAL SYSTEM
3
AIR BAGS
2
SERVICE BRAKES
2
EXTERIOR LIGHTING
2
STRUCTURE
1
EQUIPMENT
1
VISIBILITY
1

Severity Assessment

13
Crashes
0
Fires
9
Injuries
0
Deaths

Sample Complaint Reports

"TL*THE CONTACT OWNS A 2010 GRAND MARQUIS. THE VEHICLE WAS PURCHASED BRAND NEW ON OCTOBER 13, 2009. WHILE THE CONTACT WAS REMOVING SNOW FROM THE HOOD WITH A BROOM, SHE NOTICED THAT THE ROOF HAD COLLAPSED. THE DEALER ADVISED THE CONTACT TO INFORM THE HOME OWNERS INSURANCE COMPANY THAT A TREE FELL ON T..."
"TL*THE CONTACT OWNS A 2010 MERCURY GRAND MARQUIS. WHILE DRIVING APPROXIMATELY 20 MPH THE CHECK ENGINE LIGHT ILLUMINATED ON THE DASHBOARD. ONCE THE VEHICLE WAS STOPPED IT BEGAN TO SHAKE AND LUNGE FORWARD. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE HE WAS INFORMED THAT THE THROTTLE BODY ..."
"THE BODY SIDE MOLDINGS ON MY VEHICLE COMES LOOSE, AND COULD COME OFF AND BECOME AIRBORNE, DAMAGING OTHER VEHICLES. THIS DEFECT HAS BEEN NOTICED ON OTHER 2010 MERCURY MARQUIS. THE DEALER HAS BEEN GREAT, AND IS ORDERING A COMPLETE SET. THEY CANNOT TELL ME IF NEW ONES WILL HAVE THE DEFECT OR NOT? I HAV..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28