Problems · NHTSA complaints

2002 Mercury Grand Marquis problems

Owners filed 106 complaints about the 2002 Mercury Grand Marquis with NHTSA between Nov 2001 and Jul 2025. The most-cited component is vehicle speed control (18).

Complaints
106
Filed with NHTSA
Crashes
11
Reported by owners
Fires
2
Reported by owners
Injuries
8
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Vehicle speed control18
  2. Suspension15
  3. Engine and engine cooling14
  4. Electrical system12
  5. Tires10
  6. Steering9
  7. Service brakes, hydraulic9
  8. Seat belts8
  9. Exterior lighting6
  10. Power train6
  11. Air bags4
  12. Visibility4
  13. Structure3
  14. Engine2

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 9, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20011
200216
200312
200410
200515
20064
20075
20084
20093
20102
20116
20124
20136
20142
20152
20163
20172
20183
20191
20200
20211
20222
20230
20241
20251

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Vehicle speed control

18 reports4 crashes
“The contact owns a 2002 Mercury Grand Marquis. The contact stated while driving 50 MPH at night, the cruise control mode malfunctioned, and the speed of the vehicle increased independently. The contact stated that the brake pedal was depressed several times to the floor, but the vehicle failed to stop. The contact turned off the vehicle, and the vehicle came to a stop. The vehicle was towed to the contact's residence. The contact stated that he was afraid of driving the vehicle again. The contact unregistered the vehicle and turned the license plates of the vehicle to the Department of Motor Vehicles. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. Additionally, the contact stated that the check engine and the low oil pressure warning lights had illuminated two days prior to the failure. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 58,000.”
Owner complaint to NHTSAFiled Jul 17, 2025Vehicle speed control, Service brakes, EngineODI 11674238

Suspension

15 reports2 crashes
“TL* THE CONTACT OWNS A 2002 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE DRIVING AT 5 MPH, THE FRONT BALL JOINTS DETACHED FROM THE VEHICLE. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS PENDING A DIAGNOSIS. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 53,000. THE VIN WAS NOT AVAILABLE.”
Owner complaint to NHTSAFiled Aug 16, 2016SuspensionODI 10896335

Engine and engine cooling

14 reports1 crash1 fire
“TL* THE CONTACT OWNS A 2002 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THERE WAS A PREMATURE FAILURE IN WHICH THERE WAS AN INTERNAL CRACK ON THE INTAKE MANIFOLD, WHICH CAUSED WATER INTRUSION THAT AFFECTED OTHER COMPONENTS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS NOT AVAILABLE.”
Owner complaint to NHTSAFiled Jan 19, 2017Engine and engine cooling, EngineODI 10946464

Electrical system

12 reports1 fire
“?yrs.ago While backing out of parking space at Calaveras Lumber, after shifting into reverse, & removing my foot from the brake; the engine appeared to receive a huge burst of fuel which shot me backward like a rocket slamming my vehicle into and wedging it under the frame of a pickup truck parked in the same lot. I am glad I was parked and had my foot on the brake prior to this unit or system malfunction otherwise the injuries could easily have been fatal on the highway. I think this defect may be a contributing factor to the car dying recently while on my way to a Wedding Reception in Roseville, which left me stranded after dark for 41/2hrs and 71/2hrs. 2days later. I have not been able to start vehicle since and mechanics unable to diagnose why the engine is fuel starved when system parts tested appear to be in good working order. Something seems to be shutting off power or preventing power to the fuel pump and it is not the inertia switch, relays, fuses etc.. Components have been previously inspected by numerous others including dealer. No Recognizable Alert/Warning Prior to Incidents!”
Owner complaint to NHTSAFiled Jul 18, 2022Electrical system, Vehicle speed control, Fuel/propulsion systemODI 11474583

Tires

10 reports
“I PURCHASED A SET OF BRIDGESTONE INSIGNIA SE200 5/2013 . 4MONTHS LATER I REPLACED 1 TIRE DUE TO SIDE WALL SPLITTING. TODAY 12/14/13 I REPLACED THE TIRE THAT I BOUGHT IN 9/13 FOR THE SAME PROBLEM. I CONTACTED BRIDGESTONE VIA EMAIL BUT GOT NO RESPONDS I CONTACTED THEM BY PHONE THEY TOLD ME THERE WAS REASON FOR ME TO BE CONCERNED ABOUT THE TIRE FAILURES I HAD EXPERIENCED EVEN THOUGH 40 % OF THE TIRES HAD PURCHASED THIS YEAR. 3,000 MILES ON FIRST TIRE EVEN LESS ON THE SECOND TIRE ,THE TIRE DEALER CONTACTED BRIDGSTONE AND REPLACED THE TIRE WITH A FIRESTONE TIRE SINCE BRIDGESTONE NO LONGER MAKER THE INSIGNIA AND HE DID NOT WANT TO USE ANOTHER INSIGNIA BECAUSE OF WHAT HE FELT WAS A MANUFACTURING DEFECT THAT HAD BEEN SEEN IN THE INSIGNIAS AND OTHER TIRES THAT BRIDGSTONE MAKES SOME OF WITCH HAVE ALREADY RECALLED I WILL KEEP A CLOSE EYE ON REST OF TIRES.IN MY 40 YEARS OF DRIVING THIS IS BY FAR THE WORST SET OF TIRES I HAVE EVER OWNED . BRIDGESTONE SHOULD DO THE RIGHT THING AND RECALL THIS TIRE BEFORE A TIRE FAILURE CAUSES A FATAL INJURY TO SOME ONE .BUT I AM SURE BECAUSE OF THE LACK OF RESPONCE AND UNCONCERN OF THE PEOPLE THAT I HAD SPOKE TO AT BRIDGESTONE . MY LOCAL…”
Owner complaint to NHTSAFiled Dec 14, 2013TiresODI 10556066

Steering

9 reports1 crash1 related recall
“2002 MERCURY GRAND MARQUIS. CONSUMER STATED THAT WHILE DRIVING VEHICLE THEY HAD NO CONTROL OVER STEERING. *LD THE CONSUMER STATED WHILE MAKING A RIGHT TURN AT A TRAFFIC LIGHT, THE STEERING WENT OUT. THE DEALER STATED THE COUPLER BOLT, CLOCK SPRING, COVER AND CONTACT PLATE WERE MISSING AND REPLACED. *JS”
Owner complaint to NHTSAFiled Mar 12, 2021SteeringODI 11402472
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.