AI Damage2007 Mercury Mariner Hybrid: common problems
Owners of the 2007 Mercury Mariner Hybrid filed 31 complaints with NHTSA, most often about service brakes and engine and cooling. Details by component below, with sources.
Key figures
- Owner complaints
- 31
- involving a crash
- 1
What fails most often
- 1 Service brakes 26% of all complaints
- 2 Engine and cooling 19% of all complaints
- 3 Electrical system 13% of all complaints
- 4 Engine 13% of all complaints
- 5 Hybrid propulsion system 10% of all complaints
- 6 Powertrain 10% of all complaints
- 7 Fuel/propulsion system 6% of all complaints
- 8 Steering 6% of all complaints
- Service brakes: 8 complaints (26% of all).
- Engine and cooling: 6 complaints (19% of all).
- Electrical system: 4 complaints (13% of all).
- Engine: 4 complaints (13% of all).
- Hybrid propulsion system: 3 complaints (10% of all).
Symptoms owners describe
How many of the 31 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Service brakes | 8 | 0 | 0 |
| Engine and cooling | 6 | 0 | 0 |
| Electrical system | 4 | 0 | 0 |
| Engine | 4 | 0 | 0 |
| Hybrid propulsion system | 3 | 0 | 0 |
| Powertrain | 3 | 0 | 0 |
| Fuel/propulsion system | 2 | 0 | 0 |
| Steering | 2 | 0 | 0 |
| Structure | 2 | 0 | 0 |
| Equipment | 1 | 0 | 0 |
| Seats | 1 | 1 | 0 |
| Suspension | 1 | 0 | 0 |
| Other | 3 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Driving home late at night, from babysitting my grandkids, was hit in the rear end by a drunk driver (arrested by the state police), going a high rate of speed. The drivers seatback broke from the impact and I was unable to maintain control. Suv rolled 3 times across the expressway. Side curtain airbags deployed.
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 let the engine cool down.
Consumer stated brakes fail intermittently when they fail the abs and brake light on the dash are lit up. Updated 7/31/18
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 during a turn. The rest of the vehicle hardly has any rust on it.
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 failure. The approximate failure mileage was 70,000.
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 needed to pull over immediately.
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 diagnosed or repaired.
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 mariner and escape hybrids.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 6,740 of 36,656 model years in the NHTSA data (top 18% most complained about).
On average one model year of the Mariner Hybrid has 35 complaints (6 years in the data). This year has 31, about average.
What to check before buying
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
Other years of this model
Questions and answers
What are the most common problems with the 2007 Mercury Mariner Hybrid?
Owner complaints to NHTSA most often mention: service brakes, engine and cooling, electrical system. Total complaints: 31. The most frequent symptoms in complaint texts: warning lights, check engine (29%), loss of power / limp mode (16%), stalls while driving (13%).
How many service bulletins (TSB) were issued for the 2007 Mercury Mariner Hybrid?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2007 Mercury Mariner Hybrid from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2007 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.