NHTSA lists 1 safety recall and 152 owner complaints for the 2003 Mercury Mountaineer. Most complaints involve structure (59) and power train (42). The EPA rates it 15–16 mpg combined.
CERTAIN CURVED TEMPERED REPLACEMENT GLASS MANUFACTURED BY HANGZHOU SAFETY GLASS LTD AND SUPPLIED TO SAFELITE BY AUTO TEMP INC., IDENTIFIED AS DOT-430, AND SOLD FOR USE ON CERTAIN DOMESTIC AND FOREIGN VEHICLES MAY NOT BREAK INTO SMALL PIECES AS EXPECTED OF TEMPERED GLASS AND FAILS TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 205, "GLAZING MATERIALS."
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 |
“I HAVE A MERCURY MOUNTAINEER 2003 AND IT WAS STATIONED THERE WAS A CRACK IN THE BACK MIDDLE OF THE HATCH NOW THERE A HUGE CRACK AND MY WINDOW OF THE TRUNK CAME UNHINGED AND FELL OFF I SEE THIS PROBLEM IN ALL MOUNTAINEERS THEY ALL HAVE THE CRACK IN THE HATCH HOPE THEIRS DON'T FALL OFF I SEE IT IN ALMOST EVERYONE'S. THIS SHOULD BE RECALLED BECAUSE WHAT WOULD OF HAPPENED IF I WAS DRIVING AND IT FELL OFF THIS IS NOT SAFE. PLEASE HAVE THIS INVESTIGATED. THANK YOU!”
“BIG O TECHS CONNED WIFE INTO BUYING 2 TIRES AND WE OWN AWD SUV THAT REQUIRES 4 AT THE SAME INTERVALS .I IMMEDIATELY NOTIFY THEM THAT THIS IS NOT SAFE AND WILL DAMAGE MY CAR THEY CONTINUED FOR OVER 2 MONTHS TO LIE TO ME ABOUT HAVING SOMEMONE COMTACT ME . I HAVE ALL THE COMMUNICATIONS I'VE HAD WITH THEM THROUGH MESSAGES. A FEW WEEKS AFTER THEY PUT THE TIRES ON AND REFUSED TO TAKE THEM OFF AND PUT MY OLD O ES BACK ON AND ISSUE A REFUND WELL MY TRANSMISSION AND TRANSFER CASE FAILED I CONTACTED THEM AGAIN AND AGAIN THEY LIED TO ME ABOUT SOMEONE CONTACTING ME . I TOOK MY SUV TO THE TRANSMISSION SHOP WE MEASURED OVER 2 INCH CIRCUMFERENCE DIFFERENCE. I INFORMED BIG O THAT I HAVE A TSB ISSUED BY FORD MY EMPLOYER THAT DATES BACK TO 2011 ON TIRE CIRCUMFERENCE PROCEDURES FOR TIRE DEALERS TO FOLLOW . THE RESPONSE I GOT WAS THAT BIG O REFUSES TO REVIEW OR ACKNOWLEDGE TSBS . THAT'S ALARMING AS TSBS ARE ISSUED MY THE MANUFACTURERS FOR SAFETY . I HAD MY SUV FIXED FOR 3000+ $ OUT OF POCKET AND CONTACTED BIG O THE DAY I PICKED IT UP ABOUT THE TIRES STILL BEING ON THERE . I WARNED THEM THIS IS DANGEROUS AND CAN HURT MY NEW DRIVETRAIN THE VERY NEXT DAY FROM GETTING MY SUV OUT OF…”
“I'VE BEEN REVIEW THIS SITE AND SEE WHERE SEVERAL PEOPLE ARE EXPERIENCING THE SAME ISSUES THAT I AM HAVING WITH MY 2003 MOUNTAINEER. THE REAR GATE IS CRACKING AROUND THE EMBLEM. I'VE HAVE REPORTED THIS TO FORD AND THEY TELL ME I CAN PAY TO FIX IT AND IF THERE IS RECALL THEY WILL REIMBURSE ME. IN ADDITION I AM ALSO EXPERIENCING THE DOOR AJAR LIGHT COMING ON WHEN ALL ARE SHUT AND SECURE. I HAVE CONTACT FORD AND SEVERAL LOCAL DEALERSHIPS. THE DEALERSHIP ALL TELL ME THEIR HANDS ARE TIED UNTIL FORD MAKES A DECISION AND THAT I AM NOT ALONE. FORD REFUSES TO DO ANYTHING. IT'S ALMOST LIKE THEY DON'T CARE. WITH ALL THESE COMPLAINTS WHY ISN'T THIS AGENCY DOING SOMETHING? *TR”
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 FFV Auto 5-spd, 6 cyl, 4.0 L · Rear-Wheel Drive | 14 | 19 | 16 | $3,900 | 555 |
| Mountaineer 4WD FFV Auto 5-spd, 6 cyl, 4.0 L · 4-Wheel or All-Wheel Drive | 14 | 19 | 16 | $3,900 | 555 |
| Mountaineer 2WD Auto 5-spd, 8 cyl, 4.6 L · Rear-Wheel Drive | 13 | 18 | 15 | $4,150 | 592 |
| Mountaineer 4WD Auto 5-spd, 8 cyl, 4.6 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 |
1 safety recall 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 152 complaints with NHTSA. The most-cited components are structure (59), power train (42), electrical system (11). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2003 Mercury Mountaineer at 15–16 mpg combined, depending on engine and drivetrain (4 versions rated).