2009 Mercury Grand Marquis: Reliability Data

Source: NHTSA — 35 complaints
35
Total Complaints
23,500mi
Median Mileage
STEERING
Top Issue
3
Crash Reports

When Do Complaints Happen?

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

16,833 25th Percentile
23,500 Median Mileage
37,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

STEERING
5
VEHICLE SPEED CONTROL
4
SERVICE BRAKES
4
ELECTRICAL SYSTEM
4
ENGINE
2
TIRES
2
POWER TRAIN
2
FUEL/PROPULSION SYSTEM
2
SEAT BELTS
1
AIR BAGS
1

Severity Assessment

3
Crashes
1
Fires
1
Injuries
0
Deaths

Sample Complaint Reports

"TL* THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS. HE APPLIED PRESSURE TO THE BRAKE PEDAL WHEN ATTEMPTING TO PARK THE VEHICLE, BUT IT LURCHED FORWARD. THE VEHICLE CRASHED THROUGH THE GARAGE WALLS INTO THE ADJACENT ROOM. THERE WAS NO PERSONAL INJURY. THERE WERE DAMAGES TO THE WALLS AND FURNITUR..."
"TL*THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE FRONT DRIVER SIDE WINDOW WAS ROLLED DOWN WHILE DRIVING 40 MPH THE SEAT BELT BECAME LOOSE AND THEN BECAME TIGHT ON THE CONTACTS CHEST EVERY 3 SECONDS. THIS ONLY HAPPENS WHEN THE FRONT DRIVER SIDE WINDOW WAS DOWN. THE CONTA..."
"TL* THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS. HE STATED THAT HE HIT A DEER IN DECEMBER OF 2009 AND THE AIR BAGS DID NOT DEPLOY. HE DROVE THE VEHICLE TO THE DEALER AND THE DEALER SAID THEY WOULD ORDER A NEW AIR BAG FOR HIM. THE DEALER STATED THAT THE PART IS ON BACK ORDER. THE CONTACT STATED IT ..."

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