Reliability, what owners report, and what it costs to keep.
AVOIR's read: the numbers are mixed and the complaint record is worth reading before you commit.
Owners have filed 152 complaints with NHTSA about the 2003 Mercury Mountaineer, and it carries 1 recall. These are owner allegations rather than confirmed defects, but the pattern of what people complain about is the most useful signal a used buyer has.
| Area | Complaints | Share |
|---|---|---|
| Structure | 47 | 31% |
| Power train | 28 | 18% |
| Air bags | 8 | 5% |
| Vehicle speed control | 7 | 5% |
| Engine and engine cooling | 5 | 3% |
| Service brakes | 5 | 3% |
| Unknown or other | 4 | 3% |
| Suspension | 4 | 3% |
| Seats | 3 | 2% |
| Electrical system | 3 | 2% |
Verbatim from NHTSA complaint records, trimmed for length.
After disconnecting the battery for battery replacement original equipment 6 cd in dash player only shows CD Error. no error number. When investigating on the internet I found over 100 complaints with the same issue. I
NHTSA complaint: Unknown or other
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 A
NHTSA complaint: Power train
I HAVE SPENT THOUSANDS OF DOLLARS ON THE TRANSMISSION REPAIR AND NO MATTER WHAT I DO THERE ALWAYS A PROBLEM SHIFTING GEARS
NHTSA complaint: Power train
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 MOUNTAINEER
NHTSA complaint: Structure
TL* THE CONTACT OWNS A 2003 MERCURY MOUNTAINEER. WHILE DRIVING, THE TRANSMISSION FAILED TO SHIFT. WHILE PARKED, THE EMERGENCY BRAKES FAILED AND CAUSED THE VEHICLE TO ROLL AWAY. THE CONTACT WAS ABLE TO GAIN CONTROL OF THE
NHTSA complaint: Power train
1) FRONT WHEEL BEARING HUB ASSEMBLY FAILURE RESULTING IN UNSAFE​ UNDRIVEABLE (THIS HAS BEEN REPEATEDLY​ REPORTED BY VEHICLE OWNERS REGARDLESS OF VEHICLES MILAGE) FAILURE ACCURED WHILE SLOWING DOWN FOR A STO
NHTSA complaint: Steering
MY 2003 MERCURY MOUNTAINEER HAS A SOLID AIR BAG LIGHT ON. IT HAS A CODE OF 33, WHEN YOU TURN THE CAR ON, THE LIGHT GOES ON AND BLINKS 3 TIMES THEN 3 MORE TIMES. THIS INDICATES A CODE 33. FORD HAS A TECHNICAL LETTER AB
NHTSA complaint: Air bags
2003 MERCURY MOUNTAINEER RECALLS I HAVE HAD TO CHANGE THE INTAKE MANIFOLD, IGNITION COILS, I'M HAVING A GAS SMELLS NOW, TRANSMISSION THUMPS HARD WHEN GOING INTO FIRST GEAR, SOUNDS LIKE MY REAR END IS ABOUT TO FALL OUT,
NHTSA complaint: Suspension
NHTSA lists 1 recall campaign for the 2003 Mercury Mountaineer. Recalls are free to have fixed at a franchised dealer regardless of who owns the car now, but only if they were never done, so check the VIN of the specific car rather than trusting the model.
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 FEDER
Risk: IN THE EVENT OF A VEHICLE CRASH, THE OCCUPANT(S) MAY BE SERIOUSLY INJURED BY SHATTERED GLASS.
Fix: SAFELITE WILL NOTIFY ITS RETAIL CUSTOMERS AND REPLACE THE GLASS FREE OF CHARGE. RETAIL CUSTOMERS CAN CONTACT SAFELITE TOLL FREE AT 1-888-843-2906. SAFELITE WILL NOTIFY ITS WHOLESALE CUSTOMERS AND REIM
| Reliability raw | 69 | good |
|---|---|---|
| Longevity est. | 73 | good |
| Maintenance | 71 | good |
| Depreciation | 67 | good |
| Performance | 65 | good |
| Efficiency | 31 | below average |
Percentile ranks against other SUVs in the catalog.
What stands behind each score for this car:
Owners have filed 152 complaints with NHTSA for this model-year, and structure is the most reported area with 47 of them (31%). There is 1 recall on record. Check any specific car against its VIN before buying.
AVOIR scores its reliability 69/100 (good) from NHTSA recall campaigns and complaint density. That figure is a raw complaint count, not yet adjusted for sales volume, so a high-volume model scores worse than it deserves.
AVOIR scores its longevity 73/100, but that figure is an estimate built from the powertrain and the brand's record, not a measurement. A 2003 car has no 200,000-mile population to observe yet, so treat it as a prior rather than evidence.
AVOIR's read: be careful, because the numbers are mixed and the complaint record is worth reading before you commit. Its overall ownership score is 66/100. Condition, mileage and service history still matter more than any score, so get a pre-purchase inspection on the specific car.
Sources: NHTSA recalls and complaints, EPA fuel economy, IIHS awards, and live market listings. A score describes a model-year, not the individual car in front of you. Get a pre-purchase inspection.