NHTSA lists 4 safety recalls and 22 owner complaints for the 2001 Mercury Mountaineer. Most complaints involve suspension (4) and structure (3). The EPA rates it 15–17 mpg combined.
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.
CERTAIN AFTERMARKET FUEL FILTERS SOLD UNDER THE PUROLATOR BRAND NAME, P/N F65277, SHIPPED FROM JANUARY 16 THROUGH JUNE 2, 2006, FOR USE ON THE ABOVE LISTED PASSENGER VEHICLES. DUE TO INCORRECT DESIGN, THE QUICK CONNECTORS MAY NOT FULLY SEAT WITH THE TUBE INTERFACE, EVEN THOUGH THE PERSON MAKING THE CONNECTION MAY BELIEVE THAT THE QUICK CONNECTOR IS FULLY ATTACHED.
ON CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH HIGH BACK SEATS, THE UPPER BOLT ON THE DRIVER'S SIDE HIGH BACK SEAT, THAT ATTACHES THE SEAT RECLINER MECHANISM TO THE SEAT BACK FRAME, COULD FRACTURE. IF THE BOLT FRACTURES AND DOES NOT JAM IN THE SEAT BACK FRAME, THE SEAT BACK MAY RECLINE UNTIL IT MAKES CONTACT WITH AN OBJECT BEHIND THE SEAT, SUCH AS THE SECOND ROW SEAT CUSHION.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Complaints for each Mountaineer model year we’ve synced.
| Model year | NHTSA complaints |
|---|---|
| 1997 | 331 |
| 1998 | 241 |
| 1999 | 160 |
| 2000 | 125 |
| 2001 | 22 |
| 2002 | 389 |
| 2003 | 152 |
| 2004 | 210 |
| 2005 | 82 |
| 2006 | 117 |
| 2007 | 81 |
| 2008 | 96 |
| 2009 | 6 |
| 2010 | 13 |
“LEFT FRONT SIDE OF THE SUV WAS SQUEAKING. JUST WITHIN A WEEK, IT BECAME EXTREMELY LOUD AND EMBARRASSING TO DRIVE. I BROUGHT IT TO THE DEALERSHIP AND THEY SAID IT'S THE BALL JOINTS WHICH IS VERY COMMON FOR THIS TYPE OF VEHICLE. *TR”
“THE FRAME IN BACK IS RUSTING THROUGH. THE BACK CROSS MEMBER AT THE REAR BUMPER IS RUSTED BAD. IT RATTLES ALL THE TIME.BACK SWAY BARS ARE RUSTED BAD.”
“TL*THE CONTACT OWNS A 2001 MERCURY MOUNTAINEER. THE VEHICLE HAS COOPER DISCOVERER H/T, SIZE P235/75/R15 TIRES. THE CORRECT TIRE SIZE WAS UNAVAILABLE IN THE DROP DOWN MENU AT THE TIME OF THIS COMPLAINT. WHILE DRIVING 70 MPH, THE TREAD SEPARATED ON THE PASSENGER SIDE FRONT TIRE. THE TIRES WERE INSPECTED AND FOUND TO HAVE DIMPLES ON THE SIDEWALLS AT ONLY 33,000 MILES. THE CONTACT STATED THAT THE TREAD EXPLODED OFF THE TIRE AND HE LOST CONTROL OF THE VEHICLE. THE PLACE WHERE THE TIRES WERE PURCHASED STATED THAT THEY HAVE SOLD HUNDREDS OF THESE TIRES AND HAVE NOT HAD ANY FAILURES. THEY OFFERED TO GIVE HIM NEW TIRES AT $20.00 OFF SINCE HE HAD A RANDOM SET OF DEFECTIVE TIRES. THE CONTACT DID NOT ACCEPT THEIR OFFER. HE STATED THAT THE VEHICLE WAS SERVICED AS SCHEDULED AND HE JUST HAD THE TIRES ROTATED. THE VIN AND ENGINE SIZE WERE UNKNOWN. THE CURRENT AND FAILURE MILEAGES WERE 107,000.”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Mountaineer 2WD Auto 5-spd, 6 cyl, 4.0 L · Rear-Wheel Drive | 15 | 20 | 17 | $3,650 | 523 |
| Mountaineer 2WD Auto 4-spd, 8 cyl, 5.0 L · Rear-Wheel Drive | 13 | 18 | 15 | $4,150 | 592 |
| Mountaineer 4WD Auto 4-spd, 8 cyl, 5.0 L · 4-Wheel or All-Wheel Drive | 13 | 18 | 15 | $4,150 | 592 |
| Mountaineer 4WD Auto 5-spd, 6 cyl, 4.0 L · 4-Wheel or All-Wheel Drive | 13 | 18 | 15 | $4,150 | 592 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
4 safety recalls as of Nov 9, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 22 complaints with NHTSA. The most-cited components are suspension (4), structure (3), tires (3). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2001 Mercury Mountaineer at 15–17 mpg combined, depending on engine and drivetrain (4 versions rated).