There are 2 stored owner reports matching the fuel system leading-label group for the 2008 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 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)TL* THE CONTACT OWNS A 2008 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE REVERSING THE VEHICLE, HE HEARD AN ABNORMAL NOISE COMING FROM UNDERNEATH THE VEHICLE. THE CONTACT EXITED THE VEHICLE TO INSPECT THE VEHICLE. THE CONTACT STATED THAT THE FUEL TANK DETACHED AND WAS HANGING DOWN UNDERNEATH THE VEHICLE. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE HOWEVER, THERE WAS NO ASSISTANCE PROVIDED. THE FAILURE MILEAGE WAS 63,824.
WHEN THE GAS GAUGE REGISTERS BELOW 1/2 TANK, AND THE TANK IS REFUELED TO CAPACITY, IT TAKES SEVERAL MILES DRIVING( APPROX. 30-50 MILES) FOR THE GAUGE TO REGISTER FULL. ALSO, IF THE TANK IS TOWARDS THE EMPTY MARK, AND THE CAR IS FILLED TO CAPACITY, AND THE CAR IS DRIVEN, THE LOW FUEL LIGHT WILL COME ON, AND STAY ON FOR AN EXTENDED PERIOD OF TIME. AT TIMES, BEFORE THE CAR IS DRIVEN, THE CAR REFUSES TO START AS IF IT IS NOT GETTING ANY GAS. AFTER IT SETS FOR A WHILE, IT WILL START. *KB
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.