There are 4 stored owner reports matching the fuel system 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 4 of 4 matching reports.
Open the full vehicle complaint log (all categories)TL* THE CONTACT OWNS A 2004 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 30 MPH, A FUEL ODOR EMITTED FROM THE VEHICLES VENTS. THE FAILURE RECURRED MULTIPLE TIMES. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 170,000.
TL* THE CONTACT OWNS A 2004 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE VEHICLE STALLED WITHOUT WARNING. THE CONTACT HAD THE VEHICLE TOWED TO A MECHANIC AND WAS TOLD THE FUEL PUMP NEEDED TO BE REPLACED. THE FAILURE MILEAGE AND CURRENT MILEAGES WERE 45,015.
FUEL PUMP AND CRANKSHAFT SENSOR BOTH WENT OUT ON VEHICLE AT SAME TIME. REPAIR OF CRANKSHAFT SENSOR WAS A $400 AND FUEL PUMP REPAIR WAS $740. DOORS DO NOT LOCK PROPERLY WHEN USING THE KEY REMOTE AND LIGHTS INSIDE THE VEHICLE ON CONTROLS FLICKER ON AND OFF. HEATING ELEMENT IN LEATHER SEAT ON PASSENGER SIDE HAS NEVER WORKED AND HAD TO REPLACE TIRES DUE TO UNUSUAL WEAR AND TEAR. COST TO REPLACE TIRES WAS $478. DRIVER SIDES DOOR WILL NOT SHUT ALL THE WAY DUE TO ALIGNMENT PROBLEMS AND THIS PROBLEM HAS NOT BEEN CORRECTED. HAD TO REPLACE FUEL FILTER DUE TO LEAKING AND THIS COST $178. CAR HAS BECOME A MONEY PIT AND IT ONLY HAS 77,000 MILES ON IT. *TR
DT: THE CONTACT STATED WHILE DRIVING VEHICLE CAUGHT ON FIRE. THERE WERE NO WARNING SIGNS INDICATING A PROBLEM WITH THE VEHICLE. HE NOTICED SMOKE COMING FROM THE FLOORBOARD AND THE DASHBOARD. WHEN HE PULLED OFF THE ROAD THERE WERE FLAMES COMING UP THROUGH THE FLOORBOARD. THE VEHICLE HAS NOT BEEN INSPECTED TO DETERMINE THE CAUSE OF FIRE, BUT HE BELIEVED IT WAS THE FUEL INJECTION SYSTEM. THE MANUFACTURER REFERRED HIM TO CONTACT THE DEALER. HE HAS NOT CONTACTED THE SERVICE DEALER TO INFORM THEM OF THE FIRE. *AK
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.