2007 Mercury Mariner Hybrid problems & reliability
31 owner complaints filed with NHTSA for the 2007 Mercury Mariner Hybrid. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
1 complaint report injuries (1 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Service Brakes | 8 | 26% |
| Engine and Engine Cooling | 6 | 19% |
| Electrical System | 4 | 13% |
| Engine | 4 | 13% |
| Hybrid Propulsion System | 3 | 10% |
| Power Train | 3 | 10% |
| Fuel/propulsion System | 2 | 6% |
| Steering | 2 | 6% |
| Structure | 2 | 6% |
| Unknown OR Other | 2 | 6% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 70,000 miles (middle 50% between 63,510 and 91,076 miles), based on 28 complaints that included mileage.
Complaints by incident year
What owners report
“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 let the engine cool down. After restarting the vehicle, the vehicle returned to normal…”
Hybrid Propulsion System · filed Sep 29, 2023
“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 illuminated. The contact stated that the failure occurred five other times intermittently. Once the vehicle…”
Service Brakes · filed Oct 17, 2017
“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. The mariner shares the same inner…”
Structure · filed Jul 10, 2017
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Pedestrian alert sounds
Defect Petition DP22005 · opened Jan 27, 2023 · closed Aug 7, 2023 · led to recall 22V063000
Technical service bulletins
6 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2007 Mercury Mariner Hybrid.
2005-2008 escape/mariner hybrid - anti-lock brake system (abs) warning indicator illuminated with dtc(s) c1478, c1479, c1480 and/or c1481
SSM-45870 · Service Bulletin/Repair Instructions · issued Jun 8, 2016
Ford/mercury: some hybrid vehicles may require a unique bleed procedure after a replacement for one or more of hydraulic brake system components. *pe
ASI-22242 · Service Bulletin/Repair Instructions · issued Mar 1, 2012
Ford: some hybrid vehicles may exhibit an intermittent red triangle on and stop safely now message displayed on the message center, accompanied by a sudden rpm loss/no start with a diagnostic trouble code (dtc) p1a0c…
TSB-09-19-12 · Service Bulletin/Repair Instructions · issued Apr 1, 2010
Ford/mercury: some vehicles may set diagnostic trouble codes (dtcs) p0a81 (battery pack cooling fan 1 control circuit) and/or p0a96 (battery pack cooling fan 2 control circuit) in the traction battery control module…
TSB-09-15-3 · Service Bulletin/Repair Instructions · issued Dec 1, 2009
Ford/mercury: vehicles used in certain commercial applications such as taxi's and security services where extended low speed run time and extended idling may exhibit a red triangle light and codes indicating a transaxle…
TSB-08-15-1 · Service Bulletin/Repair Instructions · issued Jun 1, 2009
Ford/mercury: vehicles may exhibit a red triangle light and codes indicating a transaxle overtemp. Condition may result in reduced power as system activates fail safe operation. *pe
TSB-08-24-5 · Service Bulletin/Repair Instructions · issued Jun 1, 2009
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 2007 Mercury Mariner Hybrid in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2007 Mercury Mariner Hybrid?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 70,000 miles — budget accordingly if the car is approaching that mileage.