1999 Mercury Grand Marquis problems and complaints

Owners have filed 203 complaints with NHTSA about the 1999 Mercury Grand Marquis. The most-reported areas: Engine And Engine Cooling (29), Exterior Lighting (21), Steering (20).

Key takeaways

  • 203 owner complaints on file with NHTSA.
  • 22 involve a crash, 3 a fire, 19 reported injuries.
  • Complaints are unverified owner reports; recalls are confirmed defects.
Complaints by component
ComponentComplaintsShare
Engine And Engine Cooling2914%
Exterior Lighting2110%
Steering2010%
Electrical System199%
Suspension199%
Vehicle Speed Control178%
Power Train147%
Service Brakes136%
Hydraulic136%
Tires126%
Visibility115%
Structure105%

One complaint can name several components, so shares add up to more than 100%.

NHTSA 5-Star crash ratings
VersionOverallFrontSideRollover
1999 Mercury Grand Marquis 4-DR.Not ratedNot ratedNot ratedNot rated

Latest complaints, as filed

Owner-written and unverified by NHTSA.

Seat Belts - filed 2023-07-13

My significant other and I were in an accident on the interstate. The airbags deployed and the seat belts failed to lock in place.

Engine And Engine Cooling - filed 2022-01-25

The contact owns a 1999 Mercury Grand Marquis. The contact stated that the vehicle had a leaking intake manifold. The vehicle was taken to an independent mechanic and diagnosed that the intake manifold needed to be replaced. The vehicle was not repaired. The dealer and manufacturer were made aware of the failure but in...

Exterior Lighting - filed 2020-07-18

MY HEADLIGHTS, HAZARDS, AND TURN SIGNALS ALL JUST RANDOMLY WENT OUT WHILE DRIVING. THEY HAVE NOT COME BACK ON SINCE. AFTER READING FORUMS I BELIEVE IT TO BE THE LCM BUT MY YEAR MODEL IS NOT INCLUDED IN THE RECALL. I BELIEVE THIS ISSUE DATES BACK FARTHER THAN 2000 AND FORD SHOULD STEP UP AND RECALL MORE OF THESE LCM ...

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More for the 1999 Mercury Grand Marquis

Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.