2008 Mercury Mariner Hybrid problems & reliability
116 owner complaints filed with NHTSA for the 2008 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.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Service Brakes | 29 | 25% |
| Engine | 28 | 24% |
| Steering | 24 | 21% |
| Electrical System | 22 | 19% |
| Fuel/propulsion System | 17 | 15% |
| Power Train | 16 | 14% |
| Engine and Engine Cooling | 13 | 11% |
| Vehicle Speed Control | 11 | 9% |
| Unknown OR Other | 5 | 4% |
| Service Brakes, Hydraulic | 3 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 81,000 miles (middle 50% between 59,608 and 116,000 miles), based on 107 complaints that included mileage.
Complaints by incident year
What owners report
“The contact owns a 2008 Mercury Mariner Hybrid. The contact stated while driving at an undisclosed speed, the vehicle experienced a loss of power steering assist. The Power Steering Assist Fault message was displayed. The contact was able to drive to her destination. The vehicle was not diagnosed or repaired by an…”
Steering · filed Nov 6, 2023
“The contact owns a 2008 Mercury Mariner Hybrid. The contact stated while driving 5-10 MPH, the vehicle inadvertently lost power steering functionality. There was no warning light illuminated. The contact was able to continue driving however, extra effort was needed to steer the vehicle. The vehicle was taken to an…”
Steering · filed Jun 24, 2022
“The contact's son owns a 2008 Mercury Mariner Hybrid. The contact stated that while her son was starting the vehicle, the steering wheel lost power steering functionality. There were no warning lights illuminated. The contact's son was able to continue the drive the vehicle, however, extra effort was needed while…”
Steering · filed Mar 3, 2022
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
- Loss of power steering while driving
Defect Petition DP15001 · opened Apr 1, 2015 · closed Jun 14, 2018
Technical service bulletins
6 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2008 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 2008 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 2008 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 81,000 miles — budget accordingly if the car is approaching that mileage.