Problems · NHTSA complaints

2002 Mercury Mountaineer problems

Owners filed 389 complaints about the 2002 Mercury Mountaineer with NHTSA between Jun 2001 and Dec 2023. The most-cited component is power train (149).

Complaints
389
Filed with NHTSA
Crashes
17
Reported by owners
Fires
7
Reported by owners
Injuries
39
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Power train149
  2. Structure71
  3. Suspension39
  4. Engine and engine cooling35
  5. Visibility33
  6. Steering23
  7. Air bags21
  8. Electrical system20
  9. Vehicle speed control18
  10. Service brakes, hydraulic18
  11. Equipment14
  12. Tires11
  13. Seat belts7
  14. Latches/locks/linkages7

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 10, 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
200114
200223
200322
200436
200547
200631
200731
200835
200947
201041
201114
201213
20133
201413
20157
20163
20174
20180
20191
20201
20210
20222
20231

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

Power train

149 reports3 crashes1 fire
“Body : to much rust, corrosion, on rear of truck other failure or detachment of exterior body like rear gate frame components, and other structural components that may present a safety hazard. Electrical : electrical systems and items such asa wiring and cable on or inside the door, ignition switch cover detach ,instrument panel and gauges blinking that causes motors and actuators that power mechanical devices like (windows, sunroofs, seats, etc.) Generate some kind of electrical problem that may present a safety hazard. Power train :transmissions, transfer cases fluid hard to check ,electronic control units and shift lever inacurated, drive axles, hubs, shafts, differentials, CV joints star vibration that may present a safety hazard.”
Owner complaint to NHTSAFiled Jun 18, 2022Power train, Electrical system, StructureODI 11469915

Structure

71 reports
“TL* THE CONTACT OWNS A 2002 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE REAR LIFT GATE FAILED TO LATCH SECURELY ON SEVERAL OCCASIONS. THE CONTACT STATED THAT THE FAILURE WAS INTERMITTENT. THE CONTACT STATED ON ONE OCCASION WHILE DRIVING THE VEHICLE, THE LIFT GATE AJAR WARNING LIGHT ILLUMINATED. THE CONTACT'S SON WENT TO CLOSE THE LIFT GATE AND GLASS SHATTERED. THE CONTACT HIRED A GLASS REPAIRMEN TO FIX THE WINDOW FOR $250.00. THE DEALER NOR THE MANUFACTURER HAD BEEN NOTIFIED OF THE FAILURE. UPON INVESTIGATION, THE CONTACT ASSOCIATED NHTSA CAMPAIGN NUMBER: 01I010000 (VISIBILITY) WITH THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.”
Owner complaint to NHTSAFiled Feb 5, 2020Structure, Visibility/wiperODI 11307302

Suspension

39 reports
“I PURCHASED A USED VEHICLE FROM REDEFINED AUTO SALES LOCATED IN SKOKIE, IL ON 3/11/17. SINCE THEN I HAVE SPENT OVER $1500.00 IN COST FOR REPAIRS ON THIS VEHICLE, BEGINNING WITH I HAD TO GET THE OIL CHANGED THE SAME DAY THAT I BOUGHT THE VEHICLE BECAUSE THE CHANGE OIL REQUIRED LIGHT CAME ON AS SOON AS I EXITED THE EXPRESSWAY, I ALMOST GOT INTO A SERIOUS ACCIDENT ON THE EXPRESSWAY IN ROUTE FROM THE CAR DEALERSHIP BECAUSE A MOTORIST TRIED TO CUT ME OFF AND THAT IS WHEN I DISCOVERED THAT THE HORN WAS NOT WORKING. THE NEXT DAY THE POWER DOOR LOCKS STOPPED WORKING AND THINGS JUST HAS WENT DOWN HILL SINCE THEN, THE VEHICLE IS IN THE SHOP RIGHT NOW AS I'M TYPING THIS, I HAVE NOT DRIVEN THE VEHICLE ANYWHERE OTHER THAN BACK AND FORTH TO REPAIR SHOPS. I FILED A COMPLAINT WITH THE BBB BUT NOTHING WAS DONE ABOUT THE COMPLAINT BECAUSE THE BUSINESS RESPONDED SAYING THE VEHICLE WAS USED AND I REJECTED THE RESPONSE AND THEN RECEIVED AN EMAIL FROM THE BBB SAYING THAT THE CASE WAS CLOSED. THIS VEHICLE WAS A LEMON WITH A LOT OF ISSUES AND NONE OF THOSE ISSUES WERE DISCLOSED TO ME WHEN I PURCHASED THE VEHICLE.”
Owner complaint to NHTSAFiled May 26, 2017Suspension, Power train, Service brakesODI 10991755

Engine and engine cooling

35 reports1 fire
“MY SPARK PLUG ON #2 CYLINDER JUST SHOT OUT OF MY TRUCK'S ENGINE... ARGH!!!! DESTROYED MY COIL PACK AND COULD HAVE BUSTED THE FUEL LINE. AND NOW I CANT PUT IN THE SPARK PLUG. WTF........??????? *TR”
Owner complaint to NHTSAFiled Apr 18, 2015Engine and engine coolingODI 10706419

Visibility

33 reports2 related recalls
“HELLO AND GOOD DAY, WHEN I 1ST PURCHASED MY MOUNTAINEER (PURCHASED USED WITH APPROX 119,000 MILES) I TOOK IT TO GET IT WASHED. WHEN I WAS GETTING IT WASHED THE REAR HATCH PANEL (THE RECTANGULAR PANEL UNDER THE GLASS WITH THE MAKE AND MODEL NAME) CRACKED AND BROKE APART. I TRIED TO CONTACT FORD AND MERCURY CONCERNING THIS TO EXPLAIN WHAT HAPPENED AND HOW PART OF THE CAR LITERALLY FELL OFF. THEY INFORMED ME THAT THEY WOULD NOT RECALL THIS BUT THAT I COULD TAKE IT TO MY LOCAL DEALER AND THEY COULD FIX IT FOR $750! I DID RESEARCH TO FIND, LITERALLY, THOUSANDS OF COMPLAINTS ABOUT THE SAME EXACT PROBLEM. PEOPLE'S REAR HATCH PANELS ARE FALLING OFF WHILE DRIVING ALL THE TIME, I SEE IT ON THE ROAD ALOT. SINCE THE PANEL FELL OFF, THE RETAINING METAL PIECE THAT HOLDS THE REATCH HATCH CLASP IN PLACE TO THE DOOR, IT RUSTING OFF. THIS IS BECAUSE THE PANEL IS BROKEN OFF AND WATER/ICE HAS RUSTED THE AREA, WHERE USUALLY WATER AND ICE COULD NOT REACH IT. THIS SMALL PROBLEM IS NOT CAUSING MULTIPLE PROBLEMS. I AM CONCERNED THAT MORE OF MY REAR PANEL WILL FLY OFF WHILE DRIVING AND CAUSE AN ACCIDENT I AM CONCERNED THAT MY REAR HATCH PANEL WILL COME OPEN WHILE DRIVING (THE CLASP…”
Owner complaint to NHTSAFiled Oct 10, 2013Visibility, StructureODI 10547529

Steering

23 reports1 crash
“Aftermarket rack and pinion system re-manufactured by Detroit Axel began leaking fluid and caused a loss of power steering within 3 months of purchase. A second unit was installed and after about a year had the exact same failure as the first unit. Also resulting in the loss of power steering. It is my contention that Detroit Axel is not capable of re-manufacturing to a satisfactory safety standard. I believe they should be investigated and perhaps subject to a product recall. I pray nobody has yet been killed by their ineptitude!”
Owner complaint to NHTSAFiled Dec 27, 2023SteeringODI 11562105
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026

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