AI Damage1998 Mercury Mountaineer: common problems
Owners of the 1998 Mercury Mountaineer filed 236 complaints with NHTSA, most often about tires and vehicle speed control. Details by component below, with sources.
Key figures
- Owner complaints
- 236
- involving a crash
- 22
What fails most often
- 1 Tires 40% of all complaints
- 2 Vehicle speed control 15% of all complaints
- 3 Electrical system 9% of all complaints
- 4 Engine and cooling 8% of all complaints
- 5 Latches, locks, linkages 5% of all complaints
- 6 Seats 5% of all complaints
- 7 Structure 5% of all complaints
- 8 Suspension 5% of all complaints
- Tires: 95 complaints (40% of all), 6 of them with a crash reported by the owner.
- Vehicle speed control: 36 complaints (15% of all), 7 of them with a crash reported by the owner.
- Electrical system: 21 complaints (9% of all), 1 of them with a crash reported by the owner.
- Engine and cooling: 20 complaints (8% of all), 1 of them with a crash reported by the owner.
- Latches, locks, linkages: 12 complaints (5% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 4 L · petrol · 6 cyl
- 5 L · petrol · 8 cylnamed in 4 complaints
- automatic, 4-speed
- automatic, 5-speed
Drive: RWD, AWD
Symptoms owners describe
How many of the 236 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Tires | 95 | 6 | 0 |
| Vehicle speed control | 36 | 7 | 0 |
| Electrical system | 21 | 1 | 0 |
| Engine and cooling | 20 | 1 | 0 |
| Latches, locks, linkages | 12 | 0 | 0 |
| Seats | 12 | 0 | 0 |
| Structure | 11 | 0 | 0 |
| Suspension | 11 | 5 | 0 |
| Powertrain | 9 | 1 | 0 |
| Visibility | 9 | 0 | 0 |
| Equipment | 6 | 1 | 0 |
| Fuel system | 5 | 0 | 0 |
| Service brakes | 5 | 1 | 0 |
| Exterior lighting | 4 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Emergency brake didn't work ran into a tree and damaged a mailbox (related vehicle information: model year=1998, make=mountaineer , model=mercury ).
The engine surged and started fire underneath of the car. Then the driver removed the key and evacuated from the car. The fire was extinguished by the fireman.
The airbags did not deploy (this is the 2nd front end accident in which airbags did not deploy). This throttle body problem was a recall for the 4.0 vehicles but not the 5.0, and I have seen numerous complaints of throttle sticking on the 5.0 as well. Vehicle is now in the shop, believed to be a total loss.
The driver side seat belt became unlaced during the collision. The air bags did not deploy. The driver sustained neck injuries and was transported by ambulance. Please fill in additional information.
While driving at 35 mph driver lost control of the vehicle and hit another vehicle head on. Upon impact, both frontal air bags did not deploy.
After taking the key out of the ignition, vehicle jumped out of park and started rolling backwards 30' (feet) before impacting a tree. One person injured: pelvis fracture/dislocated leg, and lacerated liver. No cause for this problem has been determined. Please provide any additional information / attachments.
Traveling at 65 mph on I-71 near lodi, oh I drifted on to the grassy median and when I tried to pull it back to the pavement witnesses said that the vehilce flipped first landing on the rear end the continue until it landed on its wheels.
On february 22 vehicle was at stop light, light changed, consumer applied gas, nothing happened , applied gas with more force and vehicle surged forward and hit vehicle in front . $ 1700 damage to consumer's vehicle.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 1,716 of 36,656 model years in the NHTSA data (top 5% most complained about).
On average one model year of the Mountaineer has 125 complaints (16 years in the data). This year has 236, above average.
What to check before buying
- Tires. Tire age by DOT code, bulges, wear pattern.
- Vehicle speed control. Accelerator pedal, cruise control, throttle codes.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
Other years of this model
- Mountaineer 19963 sources
- Mountaineer 1997328 sources
- Mountaineer 1999151 sources
- Mountaineer 2000123 sources
- Mountaineer 200122 sources
- Mountaineer 2002372 sources
- Mountaineer 2003152 sources
- Mountaineer 2004210 sources
- Mountaineer 200582 sources
- Mountaineer 2006117 sources
- Mountaineer 200781 sources
- Mountaineer 200896 sources
- Mountaineer 20096 sources
- Mountaineer 201013 sources
- Mountaineer 99999 sources
Questions and answers
What are the most common problems with the 1998 Mercury Mountaineer?
Owner complaints to NHTSA most often mention: tires, vehicle speed control, electrical system. Total complaints: 236. The most frequent symptoms in complaint texts: smoke, burning smell, fire (12%), tires: bulges, blowouts (5%), door locks, latches, handles (3%).
How many service bulletins (TSB) were issued for the 1998 Mercury Mountaineer?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 1998 Mercury Mountaineer from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 1998 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.