Mercury Grand Marquis 1998–2002 problems by year and mileage
3rd generation · Ford Panther (revised)
NHTSA data through 24 September 2026835 complaints, 368 with mileageMethod
Which year is yours? Tap it to see what breaks on it.
The 1998 Mercury Grand Marquis
Close- Median failure report
- 81,000 mi
- Complaints filed
- 175
- Recalls naming this year
- 5
Most reported on the 1998
- Engine and its cooling system30 reports
- Steering22 reports
- Exterior lighting20 reports
5 recall campaigns name the 1998: Vehicle speed control — cruise control; Vehicle speed control; Equipment — mechanical. Not every car in a campaign is affected — check the VIN at NHTSA. Recall repairs are free.
The 1999 Mercury Grand Marquis
Close- Median failure report
- 100,000 mi
- Complaints filed
- 193
- Recalls naming this year
- 3
Most reported on the 1999
- Engine and its cooling system29 reports
- Exterior lighting21 reports
- Steering20 reports
3 recall campaigns name the 1999: Equipment — mechanical; Seat belts — front. Not every car in a campaign is affected — check the VIN at NHTSA. Recall repairs are free.
The 2000 Mercury Grand Marquis
Close- Median failure report
- 73,000 mi
- Complaints filed
- 189
- Recalls naming this year
- 6
Most reported on the 2000
- Exterior lighting23 reports
- Electrical system20 reports
- Engine and its cooling system20 reports
6 recall campaigns name the 2000: Equipment — mechanical; Seat belts — front; Visibility — windshield wiper/washer. Not every car in a campaign is affected — check the VIN at NHTSA. Recall repairs are free.
The 2001 Mercury Grand Marquis
Close- Median failure report
- 63,000 mi
- Complaints filed
- 189
- Recalls naming this year
- 3
Most reported on the 2001
- Throttle and speed control32 reports
- Seat belts29 reports
- Engine and its cooling system24 reports
3 recall campaigns name the 2001: Seat belts — front; Air bags — frontal; Air bags. Not every car in a campaign is affected — check the VIN at NHTSA. Recall repairs are free.
The 2002 Mercury Grand Marquis
Close- Median failure report
- 51,000 mi
- Complaints filed
- 89
- Recalls naming this year
- 0
Most reported on the 2002
- Throttle and speed control18 reports
- Engine and its cooling system12 reports
- Suspension12 reports
Each tile shows the median mileage at which that model year’s failures were reported. The 1999 reports latest and the 2002 earliest, but part of that gap is age: the 1999 has had 3 more years on the road to accumulate mileage.
The short answer
“Is the 1998–2002 Mercury Grand Marquis reliable?”
- Median of reported failures
- 75,000 mi
- 90% of reports came by
- 152,000 mi
- Reports with mileage
- 368
- Recalls
- 11
Most reported
- Engine and its cooling system13.8% of complaints · median 87,000 mi
- Throttle and speed control11.1% of complaints · median 58,000 mi
- Electrical system9.8% of complaints · median 72,000 mi
Documented problems
- Intake Manifold (composite)1998–2001
- Rear Air Suspension1998–2002
Owners filed 835 complaints with NHTSA about the 1998–2002 Mercury Grand Marquis; the engine and its cooling system leads with 13.8% of them, and half of the 368 that record an odometer reading came by 75,000 miles. A count like this can’t rate reliability on its own: NHTSA records what owners chose to report, not how many of each car were sold.
Failures are spread across the mileage range, with the middle half between 44,000 and 115,000 miles.
Before-you-buy checklist ↓At your mileage ↓Check this VIN — NHTSA ↗
How many miles does a 1998–2002 Mercury Grand Marquis last?
Complaint records can’t measure how long a car lasts; they show when reported failures happened. On the 1998–2002 Mercury Grand Marquis, half of the 368 complaints that record an odometer reading were filed by 75,000 miles and 90% by 152,000 miles.
40 reports came in past 150,000 miles and 13 past 200,000 — each one proof that a Grand Marquis reached that mileage, not that it failed there.
Figure 1 · Mercury Grand Marquis 1998–2002 · 368 reports with mileage
Mileage at failure
Complaints per 10,000-mile bin, 0 to 200,000 miles, equal bins on a linear scale. Tallest bar = 39 complaints.
- Rest of the range
- Median
- 200,000+ — 13 complaints (3.5%), plotted separately
- 10%
- 20,000
- 25%
- 44,302
- Median
- 75,250
- 75%
- 115,000
- 90%
- 152,486
Show the numbers
| Mileage | Complaints | Share |
|---|---|---|
| 0–10,000 | 17 | 4.6% |
| 10,000–20,000 | 18 | 4.9% |
| 20,000–30,000 | 20 | 5.4% |
| 30,000–40,000 | 22 | 6.0% |
| 40,000–50,000 | 29 | 7.9% |
| 50,000–60,000 | 39 | 10.6% |
| 60,000–70,000 | 18 | 4.9% |
| 70,000–80,000 | 31 | 8.4% |
| 80,000–90,000 | 24 | 6.5% |
| 90,000–100,000 | 25 | 6.8% |
| 100,000–110,000 | 24 | 6.5% |
| 110,000–120,000 | 18 | 4.9% |
| 120,000–130,000 | 15 | 4.1% |
| 130,000–140,000 | 18 | 4.9% |
| 140,000–150,000 | 10 | 2.7% |
| 150,000–160,000 | 9 | 2.4% |
| 160,000–170,000 | 11 | 3.0% |
| 170,000–180,000 | 1 | 0.3% |
| 180,000–190,000 | 4 | 1.1% |
| 190,000–200,000 | 2 | 0.5% |
| 200,000+ | 13 | 3.5% |
Source: NHTSA Office of Defects Investigation, public domain. Complaint counts reflect what owners reported and are not a measure of failure rate per vehicle sold.
What this can and cannot tell you: these are complaints owners chose to file, not a failure rate. Popular models accumulate more of them simply by being common. How this is built.
Common Grand Marquis problems, and when they happen
Figure 2 · Mercury Grand Marquis 1998–2002
When each system fails
Bar spans the middle half of reports; the notch inside each bar is the median. Miles at failure on a proportional scale — equal distances are equal ratios, not equal miles.
- Hydraulic brake circuit65 reports39,0009,000–58,000Hydraulic brake circuit: 65 reports, median 39,000 miles, middle half 9,000 to 58,000 miles.
- Suspension78 reports56,00035,000–105,000Suspension: 78 reports, median 56,000 miles, middle half 35,000 to 105,000 miles.
- Throttle and speed control93 reports58,00038,000–99,000Throttle and speed control: 93 reports, median 58,000 miles, middle half 38,000 to 99,000 miles.
- Electrical system82 reports72,00034,000–118,000Electrical system: 82 reports, median 72,000 miles, middle half 34,000 to 118,000 miles.
- Steering81 reports83,00050,000–140,000Steering: 81 reports, median 83,000 miles, middle half 50,000 to 140,000 miles.
- Engine and its cooling system115 reports87,00057,000–111,000Engine and its cooling system: 115 reports, median 87,000 miles, middle half 57,000 to 111,000 miles.
- Exterior lighting81 reports114,00072,000–140,000Exterior lighting: 81 reports, median 114,000 miles, middle half 72,000 to 140,000 miles.
- Your odometer — appears after you enter it in “Where your car sits”
Ordered by median mileage, earliest first. The first 12,000 miles are shaded: that is the boundary this site uses between a manufacturing defect and ordinary wear, not a property of the world.
Source: NHTSA Office of Defects Investigation, public domain.
All systems in a table
| System | Complaints | Share | Median | 25–75% |
|---|---|---|---|---|
| Engine and its cooling system | 115 | 13.8% | 87,000 | 57,000–111,000 |
| Throttle and speed control | 93 | 11.1% | 58,000 | 38,000–99,000 |
| Electrical system | 82 | 9.8% | 72,000 | 34,000–118,000 |
| Exterior lighting | 81 | 9.7% | 114,000 | 72,000–140,000 |
| Steering | 81 | 9.7% | 83,000 | 50,000–140,000 |
| Suspension | 78 | 9.3% | 56,000 | 35,000–105,000 |
| Hydraulic brake circuit | 65 | 7.8% | 39,000 | 9,000–58,000 |
| Seat belts | 59 | 7.1% | 79,000 | 55,000–100,000 |
| Body structure | 47 | 5.6% | 43,000 | 19,000–76,000 |
| Transmission and driveline | 45 | 5.4% | 51,000 | 40,000–80,000 |
System by system, in words
Complaints about this generation are not spread evenly across the vehicle, and the systems that generate the most of them do not all fail at the same point in a car's life. The median failure across all systems here is 75,000 miles; the figures below show which parts of the car run ahead of that and which run behind.
The engine and its cooling system accounts for 13.8% of complaints (115 reports, 68 of them with a mileage figure), with a median of 87,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 57,000 and 111,000 miles.
Throttle and speed control accounts for 11.1% of complaints (93 reports, 47 of them with a mileage figure), with a median of 58,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 38,000 and 99,000 miles.
The electrical system accounts for 9.8% of complaints (82 reports, 45 of them with a mileage figure), with a median of 72,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 34,000 and 118,000 miles.
The exterior lighting accounts for 9.7% of complaints (81 reports, 52 of them with a mileage figure), and it fails late — a median of 114,000 miles, considerably beyond the vehicle's overall median. That pattern is consistent with normal service life rather than a defect, though it matters for anyone buying an example already near that mileage. The middle half of these reports falls between 72,000 and 140,000 miles.
The steering accounts for 9.7% of complaints (81 reports, 43 of them with a mileage figure), with a median of 83,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 50,000 and 140,000 miles.
The suspension accounts for 9.3% of complaints (78 reports, 26 of them with a mileage figure), with a median of 56,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 35,000 and 105,000 miles.
Known problems with the 1998–2002 Grand Marquis
Intake Manifold (composite) 1998–2001
Same 4.6L 2-valve composite intake manifold coolant-crossover cracking as the previous generation; the 2005 class-action settlement covered 1996-2001 model years, and the redesigned manifold with an aluminum crossover arrived around 2002.
Rear Air Suspension 1998–2002
Air spring and compressor leaks on air-suspension-equipped cars produce rear-end sag and compressor burnout.
Before you buy a 1998–2002 Grand Marquis: the 3-minute check
Generated from 368 mileage-tagged complaints, 11 recall campaigns, 2 documented problem areas. Print this page — the checklist survives print.
- Run the VIN at nhtsa.gov/recalls. 11 campaigns cover this generation; an open recall is a free repair you can make the seller's problem.
- Check intake manifold (composite) on 1998–2001 cars. Same 4.6L 2-valve composite intake manifold coolant-crossover cracking as the previous generation; the 2005 class-action settlement covered 1996-2001 model years, and the redesigned manifold with an aluminum crossover…
- Check rear air suspension on 1998–2002 (so–equipped) cars. Air spring and compressor leaks on air-suspension-equipped cars produce rear-end sag and compressor burnout.
- End with a pre-purchase inspection of this car. Aggregate data describes the population; the example in front of you has its own history.
For a buyer, failures on this generation are spread rather than concentrated: the middle half falls between 44,000 and 115,000 miles, with a median of 75,000. There is no single mileage threshold to watch, which means condition and maintenance records are more informative than the odometer.
On inspection, the engine and its cooling system and throttle and speed control are where this generation's reports concentrate, so those are the areas worth a specific look. Throttle and speed control in particular shows a median failure mileage of 58,000, which gives a concrete number to compare against the odometer of any car you are considering.
None of this is a substitute for a pre-purchase inspection on the individual car. Aggregate patterns describe a population; the example in front of you has its own history.
Grand Marquis problems by mileage: where your car sits
Type your odometer reading, or read the common mileages in the table. Your marker lands on the timing chart above and on the curve below.
| System | Middle half of reports, mi | At 60k mi39% below | At 90k mi59% below | At 120k mi77% below | At 150k mi89% below | At 200k mi96% below |
|---|---|---|---|---|---|---|
| Engine and its cooling system | 57,000–111,000 | in window | in window | earlier | earlier | earlier |
| Throttle and speed control | 38,000–99,000 | in window | in window | earlier | earlier | earlier |
| Electrical system | 34,000–118,000 | in window | in window | earlier | earlier | earlier |
| Exterior lighting | 72,000–140,000 | later | in window | in window | earlier | earlier |
| Steering | 50,000–140,000 | in window | in window | in window | earlier | earlier |
| Suspension | 35,000–105,000 | in window | in window | earlier | earlier | earlier |
| Hydraulic brake circuit | 9,000–58,000 | earlier | earlier | earlier | earlier | earlier |
Figure 3 · Mercury Grand Marquis 1998–2002 · 368 reports with mileage
Share of reports below each mileage
Share of mileage-tagged reports filed at or below each odometer reading. Steps rise only at bin edges, by exact counted shares.
- 60,000 mi — 39% of reports below
- 90,000 mi — 59% of reports below
- 120,000 mi — 77% of reports below
- 150,000 mi — 89% of reports below
- 200,000 mi — 96% of reports below
- Median — the staircase crosses the 50% line here
- Your odometer — appears after you enter it above
The staircase tops out at 96%: the remaining 3.5% of reports (13) came above 200,000 miles.
Nothing is smoothed or interpolated. Linear axis, same as Figure 1.
Source: NHTSA Office of Defects Investigation, public domain.
1998–2002 Mercury Grand Marquis recalls (11)
NHTSA records 11 recall campaigns covering vehicles in this generation. A recall means the manufacturer or the regulator concluded there was a safety defect or a standard was not met, and that a free remedy is owed to owners — including second and later owners.
The campaigns cluster around the seat belts (4), the airbag system (3), throttle and speed control (2). Several campaigns against one area can mean a remedy that did not hold, or separate defects in parts filed under the same heading; the summaries below name each defect.
Recall status is specific to the individual vehicle, not the model. Checking a VIN against NHTSA's lookup is free and takes under a minute, and it is the only way to know whether a particular car has had the work done.
Feb 2008 · 1998 · Vehicle Speed ControlAs a result, the fuse is located in the output circuit rather than in the intended input power feed circuit…
The defect. Ford is recalling 225,000 my 1992-2003 econoline, my 1993-1995 taurus sho, my 1992-1998 crown victoria, my 1993 bronco, f-series, my 1995-1997 f-series super duty stripped chassis, my 1992-1998 Mercury Grand Marquis, and my 1992-1995 Lincoln town car…
What can happen. As a result, the fuse is located in the output circuit rather than in the intended input power feed circuit, and may not offer the intended protection in the event of an electrical short to ground.
The free fix. Dealers will install a new wiring harness, or replace the mating electrical component. The recall began on february 18, 2008. Owners may contact Ford at 1-800-392-3673.
Aug 2007 · 1998 · Vehicle Speed ControlThis could result in an underhood fire.
The defect. On certain pickup trucks, passenger vehicles, sport utility vehicles, and motor homes chassis, the speed control deactivation switch may, under certain conditions, leak internally and then overheat, smoke, or burn.
What can happen. This could result in an underhood fire.
The free fix. Dealers will install a fused wiring harness. Owners of the passenger cars included in this campaign will be instructed to return their vehicles to their dealers to have the speed control deactivation…
Jul 2001 · 2001 · Seat BeltsIn the event of a crash, the restraint system may not provide adequate occupant protection, increasing the…
The defect. Vehicle description: passenger and sport utility vehicles, pickup trucks, and minivans. Equipped with seat belts supplied by trw. It is possible that the driver's and/or front passenger's outboard seat belt buckle may not fully latch. Ford crown victoria…
What can happen. In the event of a crash, the restraint system may not provide adequate occupant protection, increasing the risk of personal injury to the seat occupant.
The free fix. Dealers will inspect the front outboard seat belt buckles and if the buckle fails the inspection process, it will be replaced. Owner notification began july 25, 2001. Owners who take their vehicles…
Dec 2000 · 2001 · Air BagsIn some cases, less than the intended level of protection in the event of a crash.
The defect. Vehicle description: minivans and passenger vehicles. A restraint control module (rcm) or a side or front crash sensor may have been assembled with one or more of the screws that mount the circuit board in the housing missing. If some or all of the screws are…
What can happen. In some cases, less than the intended level of protection in the event of a crash.
The free fix. Dealers will inspect the rcm and crash sensors and, if necessary, replace them.
Sep 2000 · 2001 · Air BagsThis condition could result in personal injury.
The defect. Certain passenger vehicles, limousines, and MINI vans were built with a newly designed restraint control module (rcm). In some cases, the rcm does not recognize certain system faults that could result in an air bag or seat belt pre-tensioner unexpectedly…
What can happen. This condition could result in personal injury.
The free fix. Dealers will replace the rcm in these vehicles. Owner notification began september 14, 2000. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive…
Jul 2000 · 1998–2000 · EquipmentIf this occurs and any portion of the operator's body is under the vehicle, the potential for personal injury…
The defect. Vehicle description: passenger vehicles. These vehicles have jacking instructions which, if followed, could cause the vehicle operator to place the jack on a frame weld when attempting to raise a rear wheel. If the vehicle is jacked up with the jack placed on…
What can happen. If this occurs and any portion of the operator's body is under the vehicle, the potential for personal injury exists.
The free fix. Owners will be provided with a revised jack instruction and stowage card and jack warning label, as well as a supplement to the owner guide.
Jun 2000 · 1998–2000 · Seat BeltsIn the event of a collision, these seat belts may not restrain an occupant increasing the risk of injury.
The defect. Vehicle description: passenger vehicles using aftermarket front passenger side seat belt assemblies that were sold by Ford parts departments from january 1, through june 13, 2000. These seat belt assemblies fail to comply with the requirements of fmvss no.…
What can happen. In the event of a collision, these seat belts may not restrain an occupant increasing the risk of injury.
The free fix. Dealers will inspect these vehicles and replace the service seat belt assemblies that were installed in these vehicles from january 1 through june 13, 2000.
Jun 2000 · 1998–2000 · Seat BeltsIn the event of a collision, these seat belts may not restrain an occupant increasing the risk of injury.
The defect. Vehicle description: passenger vehicles using aftermarket driver's seat belt assemblies that were sold by Ford parts departments from january 1, through june 13, 2000. These seat belt assemblies fail to comply with the requirements of fmvss no. 209, "Seat…
What can happen. In the event of a collision, these seat belts may not restrain an occupant increasing the risk of injury.
The free fix. Dealers will inspect these vehicles and replace the service seat belt assemblies that were installed in these vehicles from january 1 through june 13, 2000.
May 2000 · 2000 · VisibilityThis condition could result in inoperative wipers with no advance warning.
The defect. Vehicle description: a windshield wiper control module may not be capable of carrying the current required during high load conditions on the wipers (i.E., Ice, snow, or other debris).
What can happen. This condition could result in inoperative wipers with no advance warning.
The free fix. Dealers will inspect the wiper control modules and replace if necessary.
Mar 2000 · 2000 · Seat BeltsIn the event of a crash, the vehicle occupant may not be properly restrained, increasing the risk of personal…
The defect. Vehicle description: passenger vehicles. These vehicles may have been built with the left rear seat belt retractor attaching bolts incorrectly tightened.
What can happen. In the event of a crash, the vehicle occupant may not be properly restrained, increasing the risk of personal injury.
The free fix. Dealers will tighten the retractor mounting bolts to the specified torque.
Feb 2000 · 2000 · Air BagsA loose module could result in a delayed air bag deployment in the event of a vehicle crash.
The defect. Vehicle description: passenger vehicles. These vehicles may have been built with lower than the intended level of torque on the bolts that attach the air bag electronic crash sensor module to the vehicle.
What can happen. A loose module could result in a delayed air bag deployment in the event of a vehicle crash.
The free fix. Dealers will tighten the air bag electronic crash sensor attaching bolts.
Crashes, fires and injuries owners reported
What owners reported alongside the failure itself, out of 835 complaints against this generation:
- Crashes
- 84 (10.1%)
- Fires
- 21
- Injury reports
- 50
- Fatality reports
- 3
These flags are self-reported by complainants and unverified by NHTSA; one report can carry several flags, so the counts overlap and do not sum to a total. They are not adjusted for how many of these vehicles are on the road. No chart is drawn here on purpose: overlapping counts spanning very different magnitudes cannot be honestly encoded as lengths.
Grand Marquis problems by model year
The 1999 drew the most complaints of this generation, 193, most of them about the engine and its cooling system, and the 2002 the fewest, 89. A typical year drew about 189.
| Year | Complaints | With mileage | Median miles | Most reported | Recalls |
|---|---|---|---|---|---|
| 1998 | 175 | 49 | 81,000 | Engine and its cooling system (30) | 5 |
| 1999 | 193 | 69 | 100,000 | Engine and its cooling system (29) | 3 |
| 2000 | 189 | 93 | 73,000 | Exterior lighting (23) | 6 |
| 2001 | 189 | 101 | 63,000 | Throttle and speed control (32) | 3 |
| 2002 | 89 | 56 | 51,000 | Throttle and speed control (18) | 0 |
What Grand Marquis owners reported
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…
2002 · 58,000 miles · Engine
The contact owns a 2002 Mercury Grand Marquis. The contact stated that after securely latching the seat belt, the driver's side front and passenger's side front seat belt buckles unintendedly unlatched. There were no warning lights illuminated. The contact stated that the failure was related to NHTSA Campaign Number…
2002 · 100,000 miles · Seat belts
The contact owns a 2001 Mercury Grand Marquis. The contact stated he noticed coolant fluid on the ground underneath the vehicle. The contact started the vehicle and noticed that the high engine temperate warning light was illuminated. The dealer was contacted but was not able to diagnose the vehicle. The manufacturer…
2001 · 100,000 miles · Engine and its cooling system
The contact owns a 2000 Mercury Grand Marquis. The contact stated that after turning off the windshield wipers, the wiper arms stopped in the middle of the windshield and became inoperable. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the vehicle had experienced the…
2000 · 150,000 miles · Visibility equipment
Built from 368 NHTSA complaints with mileage · snapshot 2026-09-26 · open data · how it is built
Other Grand Marquis generations
- Grand Marquis 1992–1997 357 reports with mileage, most about the engine and its cooling system
- Grand Marquis 2003–2011 1,304 reports with mileage, most about the exterior lighting