There are 3 stored owner reports matching the suspension leading-label group for the 2004 Mercury Grand Marquis in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)"CHECK AIR SUSPENSION" LIGHT CAME ON. VEHICLE BOTTOMED OUT CAUSING VERY POOR HANDLING AND CONTROL. REPAIR SHOWED FAILURE OF AIR COMPRESSOR PUMP, PART NUMBER 8W1Z5319A, A PART COMMON TO FORD MOTOR VEHICLES WITH AIR SUSPENSION. THE REPLACEMENT PUMP HAS A MRP OF $410.00 AND $238.00 LABOR. THE VEHICLE IS ONLY DRIVEN ON PAVED ROADS AND HAS NEVER BEEN DAMAGED BY POOR ROAD CONDITIONS.
2004 MERCURY MARQUIS REAR SHOCKS WENT BAD. CONSUMER WOULD LIKE REIMBURSEMENT FOR REPAIR WORK DONE. *KB THE CONSUMER NOTICED A SLIGHT BOUNCE COMING FROM THE REAR OF THE VEHICLE. THE CONSUMER WAS INFORMED THE SHOCKS WERE LEAKING OIL. *JB
VEHICLE VIBRATED WHEN IN MOTION AT SPEEDS OF 45 MPH OR GREATER.WHEN DRIVING AT 70 MPH BACK END SWAYED.CONSUMER TOOK VEHICLE BACK TO THE DEALER, WHO CHANGED AND BALANCED TIRES, ALSO, CHANGED THE WHEEL HUBS, BUT PROBLEM RECURRED. *AK *NM
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.