Mercury Grand Marquis 1998–2002
3rd generation · Ford Panther (revised)
NHTSA data through 12 August 2026894 complaints, 419 with mileageMethod
On this generation, failures are spread across the mileage range, with the middle half between 41,712 and 118,000 miles.
- Rest of the range
- Median
- 200,000+ — 19 complaints (4.5%), plotted separately
- 10%
- 18,600
- 25%
- 41,712
- Median
- 78,000
- 75%
- 118,000
- 90%
- 158,200
Show the numbers
| Mileage | Complaints | Share |
|---|---|---|
| 0–10,000 | 23 | 5.5% |
| 10,000–20,000 | 20 | 4.8% |
| 20,000–30,000 | 30 | 7.2% |
| 30,000–40,000 | 22 | 5.3% |
| 40,000–50,000 | 29 | 6.9% |
| 50,000–60,000 | 35 | 8.4% |
| 60,000–70,000 | 21 | 5.0% |
| 70,000–80,000 | 36 | 8.6% |
| 80,000–90,000 | 31 | 7.4% |
| 90,000–100,000 | 26 | 6.2% |
| 100,000–110,000 | 27 | 6.4% |
| 110,000–120,000 | 18 | 4.3% |
| 120,000–130,000 | 16 | 3.8% |
| 130,000–140,000 | 18 | 4.3% |
| 140,000–150,000 | 13 | 3.1% |
| 150,000–160,000 | 13 | 3.1% |
| 160,000–170,000 | 15 | 3.6% |
| 170,000–180,000 | 1 | 0.2% |
| 180,000–190,000 | 4 | 1.0% |
| 190,000–200,000 | 2 | 0.5% |
| 200,000+ | 19 | 4.5% |
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.
Owners filed 894 complaints with NHTSA about the 1998–2002 Mercury Grand Marquis, and 419 of them record the mileage at which the failure happened. That is enough to show not just what fails, but when.
Failures are spread across the mileage range, with the middle half between 41,712 and 118,000 miles. The median is 78,000 miles.
The most-reported areas are the engine and its cooling system (11.3% of complaints, typically around 88,000 miles), the steering (8.8% of complaints, typically around 88,000 miles), throttle and speed control (8.7% of complaints, typically around 60,000 miles).
What fails, and when
- Engine and its cooling system88,000median 87,750 miles, middle half 57,000 to 113,000
- Steering88,000median 87,934 miles, middle half 54,000 to 140,000
- Throttle and speed control60,000median 60,000 miles, middle half 40,000 to 108,000
- Exterior lighting118,000median 118,287 miles, middle half 72,000 to 140,000
- Electrical system75,000median 75,000 miles, middle half 26,000 to 124,000
- Suspension50,000median 50,000 miles, middle half 31,000 to 105,000
- Hydraulic brake circuit22,000median 22,047 miles, middle half 8,000 to 50,000
| System | Complaints | Share | Median | 25–75% |
|---|---|---|---|---|
| Engine and its cooling system | 101 | 11.3% | 88,000 | 57,000–113,000 |
| Steering | 79 | 8.8% | 88,000 | 54,000–140,000 |
| Throttle and speed control | 78 | 8.7% | 60,000 | 40,000–108,000 |
| Exterior lighting | 74 | 8.3% | 118,000 | 72,000–140,000 |
| Electrical system | 72 | 8.1% | 75,000 | 26,000–124,000 |
| Suspension | 68 | 7.6% | 50,000 | 31,000–105,000 |
| Hydraulic brake circuit | 54 | 6.0% | 22,000 | 8,000–50,000 |
| Seat belts | 51 | 5.7% | 77,000 | 55,000–100,000 |
| Transmission and driveline | 43 | 4.8% | 51,000 | 40,000–80,000 |
| Tyres | 38 | 4.3% | 40,000 | 20,000–89,000 |
Which systems, and when
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 78,000 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 11.3% of complaints (101 reports, 60 of them with a mileage figure), with a median of 87,750 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 57,000 and 113,000 miles.
The steering accounts for 8.8% of complaints (79 reports, 37 of them with a mileage figure), with a median of 87,934 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 54,000 and 140,000 miles.
Throttle and speed control accounts for 8.7% of complaints (78 reports, 42 of them with a mileage figure), with a median of 60,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 40,000 and 108,000 miles.
The exterior lighting accounts for 8.3% of complaints (74 reports, 48 of them with a mileage figure), and it fails late — a median of 118,287 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 72,234 and 140,000 miles.
The electrical system accounts for 8.1% of complaints (72 reports, 39 of them with a mileage figure), with a median of 75,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 26,000 and 124,000 miles.
The suspension accounts for 7.6% of complaints (68 reports, 23 of them with a mileage figure), and it fails early — a median of 50,000 miles, well before the vehicle's overall median. Failures clustered this far below the rest of the car usually point to a design or manufacturing problem rather than wear, because wear does not selectively target one system on low-mileage examples. The middle half of these reports falls between 31,000 and 105,000 miles.
Differences between model years
Within this generation, complaint volume is not constant across model years. The 2000 model year drew the most — 216 complaints — while 2002 drew the fewest at 101. The median year sits at 202.
Recalls and what they cover
No recall campaigns covering this generation appear in NHTSA's post-2010 recall file. That is not the same as an absence of problems — recalls address safety defects specifically, and many of the complaints above concern faults that are expensive or annoying without meeting that threshold.
Reported severity
Of the 894 complaints filed against this generation, 96 reported a crash; 22 reported a fire; 72 reported an injury; 3 reported a fatality. Crash-involved reports represent 10.7% of the total.
These are owner-reported outcomes, not verified investigations, and they are not adjusted for how many of these vehicles are on the road. They are included because the distinction between a fault that strands a car and a fault that causes a collision is the one that matters most, and it is not visible in a complaint count alone.
What this means if you are buying one
For a buyer, failures on this generation are spread rather than concentrated: the middle half falls between 41,712 and 118,000 miles, with a median of 78,000. 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 the steering are where this generation's reports concentrate, so those are the areas worth a specific look. The engine and its cooling system in particular shows a median failure mileage of 87,750, 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.
Documented problems
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 (so–equipped)
Air spring and compressor leaks on air-suspension-equipped cars produce rear-end sag and compressor burnout.
By model year
| Year | Complaints | With mileage |
|---|---|---|
| 1998 | 168 | 50 |
| 1999 | 202 | 72 |
| 2000 | 216 | 114 |
| 2001 | 207 | 118 |
| 2002 | 101 | 65 |
What owners reported
While driving or backing at slow speeds this vehicle(which has very very low miles) makes loud,banging,pounding,binding noises and sounds like the entire front end is going to fall off. This happens frequently and is not normal for any car with such low miles 15 years old or not. I have gotten to the point that i am…
1998 · 31,000 miles · Suspension
My 1998 Mercury Grand Marquis at slow speed had the passenger side tie rod end fail and fall off causing complete loss of steering. This happened at a slow speed luckily no accident. Car towed to Ford dealer. Replaced all four tie rod ends. Cost $400.00. Car had 50,000 miles , this was a factory defect. This is a…
1998 · 50,000 miles · Steering
Consumer stated the passenger's side front seat belt retractor will not release the belt. The consumer tried pulling the seat belt out of retractor, instead the seat belt began to retract tighter and tighter. Consumer had to be cut out of seat belt. *Ak consumer had to cut the seat belt to be released. There…
1998 · 56,000 miles · Seat belts
Tl* the contact owns a 1998 Mercury Grand Marquis. While the vehicle was parked the contact heard a loud booming noise from inside his home. The contact noticed flames underneath the hood. The fire department extinguished the fire and a report was filed. The vehicle was destroyed. The manufacturer was made aware of…
1998 · 63,000 miles · Throttle and speed control
Built from 419 NHTSA complaints with mileage · snapshot 2026-08-12 · open data · reproduce this page