There are 2 owner-reported suspension complaints for the 2009 Mercury Grand Marquisin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS. WHILE DRIVING AND EXITING OFF THE RAMP THE VEHICLE DROVE OVER A BUMP AND THE REAR OF THE VEHICLE ELEVATED HIGHLY WITHOUT WARNING. THE VEHICLE WAS DRIVEN TO THE CONTACT'S RESIDENCE. THE VEHICLE WAS NOT DIAGNOSED. THE DEALER REPLACED THE AIR COMPRESSOR; HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 65,908. UPDATED 03/02/17*LJ *CN
MERCURY GRAND MARQUIS AIR SUSPENSION IS TERRIBLE.(2009&2010) WHEN GOING OVER A BUMP THE CAR LIKE BOTTOMS OUT WITH A LOUD BANG. CAR SWAYS A LITTLE MUST HOLD ONTO THE STEERING WHEEL. COULD BE A SAFETY PROBLEM??? *TR
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.
Data synced from NHTSA on Apr 26, 2026