Reliability, what owners report, and what it costs to keep.
AVOIR's read: a solid ownership case with specific caveats below.
Owners have filed 31 complaints with NHTSA about the 2007 Mercury Mariner Hybrid, and it carries no recalls. 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 |
|---|---|---|
| Service brakes | 7 | 23% |
| Engine and engine cooling | 5 | 16% |
| Electrical system | 3 | 10% |
| Hybrid propulsion system | 2 | 6% |
| Steering | 2 | 6% |
| Suspension | 1 | 3% |
| Engine | 1 | 3% |
| Power train | 1 | 3% |
| Engine | 1 | 3% |
| Power train | 1 | 3% |
Verbatim from NHTSA complaint records, trimmed for length.
The contact owns a 2007 Mercury Mariner. The contact stated while driving 50 MPH, the engine started to overheat, after which the vehicle lost motive power. The contact was able to pull to the shoulder of the roadway to
NHTSA complaint: Hybrid propulsion system
TL* THE CONTACT OWNS A 2007 MERCURY MARINER HYBRID. WHILE DRIVING APPROXIMATELY 60 MPH, THE BRAKE PEDAL TRAVELED TO THE FLOORBOARD BEFORE THE VEHICLE STOPPED. THE ANTI-LOCK BRAKE SYSTEM AND THE BRAKE INDICATORS ILLUMINAT
NHTSA complaint: Service brakes
PASSENGER SIDE REAR INNER FENDER WELL RUSTED COMPLETELY THROUGH ABOVE THE REAR SHOCK CAUSING THE SHOCK TO POTENTIALLY BREAK THROUGH AND DROP THE WHOLE SUSPENSION AND CAUSE AND ACCIDENT OR FLIP OVER IF IT BROKE THROUGH DU
NHTSA complaint: Suspension
THE BRAKE SYSTEM'S HYDRAULIC CONTROL UNIT ("HCU"). ON SEVERAL OCCASIONS WHILE DRIVING, THE BRAKE PEDAL WILL TRAVEL TO THE FLOOR WHILE TRYING TO BRAKE RESULTING IN NO BRAKING ACTION (IE., VEHICLE NOT SLOWING). THIS MIGH
NHTSA complaint: Service brakes
TL* THE CONTACT OWNS A 2007 MERCURY MARINER HYBRID. THE CONTACT STATED THAT THE ALARM SYSTEM SOUNDED INDEPENDENTLY. THE VEHICLE WAS NOT DIAGNOSED AND THE FAILURE RECURRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILU
NHTSA complaint: Electrical system
TL* THE CONTACT OWNS A 2007 MERCURY MARINER HYBRID. WHILE DRIVING APPROXIMATELY 60 MPH, THE ENGINE STALLED AND THE INSTRUMENT PANEL DISPLAYED A TRIANGLE WITH AN EXCLAMATION POINT. THE PANEL DISPLAYED THAT THE DRIVER NEE
NHTSA complaint: Engine
TL* THE CONTACT OWNS A 2007 MERCURY MARINER HYBRID. WHILE DRIVING APPROXIMATELY 65 MPH, THE VEHICLE STALLED AND THE CHECK FOUR BY FOUR, SERVICE BRAKES, AND PULL OVER SAFELY WARNING LIGHTS ILLUMINATED. THE VEHICLE WAS NOT
NHTSA complaint: Power train
THE POWER STEERING WENT OUT IN MY MOTHER'S 2007 MARINER HYBRID WITH 72,000 MILES DUE TO FAILURE OF THE POWER STEERING CONTROL MODULE. AFTER SEARCHING ONLINE FORUMS, I FOUND THIS TO BE A RATHER COMMON ISSUE ON THE 05-07 M
NHTSA complaint: Steering
| Reliability raw | 81 | excellent |
|---|---|---|
| Longevity est. | 78 | good |
| Maintenance | 81 | excellent |
| Depreciation | 67 | good |
| Performance | 58 | average |
| Efficiency | 49 | below average |
Percentile ranks against other SUVs in the catalog.
What stands behind each score for this car:
Owners have filed 31 complaints with NHTSA for this model-year, and service brakes is the most reported area with 7 of them (23%). No recalls are on record for it.
AVOIR scores its reliability 81/100 (excellent) 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 78/100, but that figure is an estimate built from the powertrain and the brand's record, not a measurement. A 2007 car has no 200,000-mile population to observe yet, so treat it as a prior rather than evidence.
AVOIR's read: worth a look, because a solid ownership case with specific caveats below. Its overall ownership score is 73/100. 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.