Mariner Hybrid (2008)
NHTSA Safety Ratings About NHTSA ratings
Battery & Propulsion Reliability
Hybrid (HEV)
Battery & propulsion complaint analysis for the 2008 Mercury Mariner Hybrid
That's about 2.7x the typical rate for hybrids in this dataset (median 7.0 per year). Above peer average — but high-volume models naturally produce more raw complaints, so check the issue mix below before drawing conclusions.
What kind of battery complaint?
Among the 21 battery-related complaints, here's the type mix. These percentages describe what the complaints are about — not how reliable the vehicle is overall.
Loss of power, drive unit, inverter, traction motor, DC-DC converter.
Hybrid system warnings, eCVT, motor-generator, hybrid transaxle.
Propulsion battery defects, capacity loss, BMS faults, replacement claims.
Sample complaint excerpts
Electric Propulsion
- [2008] 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 independent mechanic or dealer. The manufacturer was made aware of the failure. The
- [2008] STOP SAFELY NOW CHIMES AND DISPLAYED ON DASH FOLLOWED BY NO ACCELERATION UNTIL VEHICLE STALLS AND STOPS.STARTS RIGHT BACK UP BUT CONTINUES TO HAPPEN ESPECIALLY IN LA RUSH HOUR TRAFFIC. VERY DANGEROUS! HAD RECALL WORK DONE ON THE MECS 3YRS AGO BUT PROBLEM HAS CONTINUED. THIS HAPPENS WHILE IN MOTION ON THE 110 FREEWAY IN DOWNTOWN LOS ANGLELES, CA. COULD BE THE ELECTRIC THROTTLE BODY OR REAR ACTUATO
- [2008] CAR HAS BEEN ROCK SOLID RELIABLE UP UNTIL 3 WEEKS AGO. DRIVING NORMALLY ON CITY STREETS THE CAR ABRUPTLY SHUT DOWN THE HYBRID AND ICE PROPULSION UNITS. STEERING FROZE UP AND IT WAS LIKE PUTTING THE BRAKES ON IT STRANDED ME IN THE MIDDLE OF TRAFFIC CAUSING DELAYS FOR OTHER DRIVERS AND A DANGEROUS OBSTRUCTION. THE CAR HAS NO LIMP MODE TO ALLOW FOR SAFELY GETTING OUT OF TRAFFIC. IT HAD TO BE T
Hybrid Drivetrain
- [2008] WE BOUGHT VEHICLE IN JAN, 2018 FROM A PRIVATE PARTY, AS A WORK VEHICLE FOR MY HUSBAND, WHO IS A USPS RURAL ROUTE CARRIER. TWO WEEKS AFTER PURCHASE, THE ANTI-LOCK BRAKE LIGHT WENT ON, AND THE CAR WOULD NOT STOP WHEN IT WAS SUPPOSED TO, WHICH WAS VERY DANGEROUS IN WINTER. WE BELIEVE THE PRIOR OWNER KNEW ABOUT THIS. THE LIGHT WOULD JUST GO ON & OFF WITH NO PATTERN. ABOUT 1 1/2 MONTHS LATER, HE WAS DR
- [2008] 2008 MERCURY MARINER HYBRID WAS GOING 20MPH ON ELECTRIC MOTOR IN TRAFFIC WHEN TRIANGLE WARNING LIGHT CAME ON AND THE STOP SAFELY NOW SIGN DISPLAYED. THE VEHICLE GAS ENGINE DID NOT COME ON AND I HAD TO PULL OVER TO THE SIDE. I PLACE THE CAR IN PARK AND TURN OFF THE ENGINE. I RESTARTED THE ENGINE AND THE WARNING LIGHT DISAPPEARED. I TOOK IT TO THE FORD DEALERSHIP AND THEY RAN A DIAGNOSTIC ON IT.
- [2008] EXPERIENCED TWO IN-TRAFFIC DRIVE-TRAIN SHUT-DOWNS AS DANGEROUS AS THE G.M. IGNITION SWITCH MALFUNCTIONS... TRAVELING IN 60MPH-70MPH NIGHT-TIME VALENTINE'S NIGHT FREEWAY TRAFFIC ON THE I-405 IN SANTA ANA, CA. IN THE #3 LANE OF 5 LANES, THE CHECK ENGINE WARNING LIGHT SUDDENLY FLASHED ON - ACCOMPANIED BY THE `SCREECH' OF THE `CHECK GAUGES' TONE - AND THE DRIVE-TRAIN LOST ALL POWER -- ALONG WITH T
High-Voltage Battery
- [2008] SECOND UNWARNED TOTAL SHUT-DOWN OF ALL POWER ON ROADWAY - THIS ONE JUST 17 DAYS AFTER REPAIRS AND REPROGRAMMING BY FORD DEALERSHIP FOLLOWING FIRST INSTANCE, WHICH CUT GAS ENGINE AND ELECTRIC MOTOR POWER WHILE TRAVELING ON LOS ANGELES FREEWAY. THIS POWER SHUT-DOWN OCCURRED WHILE TRYING TO PULL FROM PARALLEL PARK SPOT ONTO BUSY BLVD - LOST ALL POWER 2 FEET INTO TRAFFIC, ABLE TO ROLL BACK INTO CURB B
Source: classified from NHTSA complaint and recall data. "Battery-related" includes high-voltage propulsion battery, charging system, hybrid drivetrain, electric propulsion, regenerative braking, 12V auxiliary battery, and thermal-event complaints. Other complaints (suspension, steering, brakes, infotainment) appear in the engine and vehicle-level sections. Rates are absolute counts, not normalized per-VIN — high-volume models naturally produce more raw complaints than low-volume ones. Self-reported death and injury counts are capped per complaint to limit form abuse.
Recalls (4)
Ford Motor Company (Ford) is recalling certain model year 2001-2008 Ford Escape and Mercury Mariner vehicles manufactured March 31, 2001, to September 1, 2009. The affected vehicles are equipped with either a 2.3L or 3.0L engine and have had their CD4E transmission replaced with remanufactured one that was rebuilt between June 11, 2015 through July 15, 2015. These service repair part transmissions have a shift lever bolt that may not be properly tightened. As a result, the shift control lever could disengage from the transmission without warning.
The Timken Company (Timken) is recalling certain aftermarket front wheel bearings, part number 510072, sold from January 22, 2015, to May 21, 2015, to be used as service parts on 2001-2012 Ford Escape, 2001-2011 Mazda Tribute, and 2005-2011 Mercury Mariner vehicles. The affected wheel bearings have incorrect dimensions of a 42mm bore, 76mm outer dimension, and 39mm width, instead of a 42mm bore, 78mm outer dimension and a 45mm width.
Ford Motor Company (Ford) is recalling certain model year 2008-2011 Ford Escape and Mercury Mariner vehicles manufactured August 18, 2006, through September 11, 2010. The affected vehicles have a steering torque sensor that may not be able to properly detect driver steering input. As a result, the system could remove the Electric Power Steering (EPS) assist.
Ford Motor Company (Ford) is recalling certain model year 2005-2008 Ford Escape hybrid electric vehicles manufactured October 13, 2003, to June 20, 2008, and 2006-2008 Mercury Mariner hybrid electric vehicles manufactured June 10, 2005, to June 20, 2008. The coolant pump for the hybrid system may fail resulting in the hybrid electronics overheating.
Alternatives in Compact Sedan
Frequently Asked Questions
What are the most common 2008-2008 Mercury Mariner Hybrid problems?
The 2008-2008 Mercury Mariner Hybrid has accumulated 116 NHTSA complaints. The most frequently reported problem areas are general mechanical issues. As with any used vehicle, a pre-purchase inspection and vehicle history report are recommended.
Which Mercury Mariner Hybrid engine is most reliable?
The 2008-2008 Mercury Mariner Hybrid was offered with 0 engine options. Based on NHTSA complaint data, the base engine has the lowest complaint density and is considered the most reliable choice for buyers.
Is the 2008-2008 Mercury Mariner Hybrid a good used car?
The 2008-2008 Mercury Mariner Hybrid can be a solid used car purchase depending on trim, mileage, and maintenance history. With 116 total NHTSA complaints on record, prospective buyers should review the known problem areas and check for open recalls before buying.
How many NHTSA complaints does the 2008-2008 Mercury Mariner Hybrid have?
The 2008-2008 Mercury Mariner Hybrid has 116 complaints filed with NHTSA as of our latest data pull. Complaint counts reflect owner-reported issues and do not necessarily indicate defects or safety risks on their own.
What recalls affect the 2008-2008 Mercury Mariner Hybrid?
There are 4 NHTSA recalls affecting some 2008-2008 Mercury Mariner Hybrid vehicles. Recall status varies by VIN — check the NHTSA recall database at recalls.nhtsa.dot.gov with your specific VIN to confirm which campaigns apply.
What should I check before buying a used Mercury Mariner Hybrid?
Before buying a used Mercury Mariner Hybrid, verify all open recalls are completed via the NHTSA VIN lookup tool. Pay particular attention to general mechanical issues, which are the most commonly reported problem areas. Request maintenance records, have an independent mechanic inspect the vehicle, and run a vehicle history report to check for prior accidents or title issues.
What are the NHTSA crash test ratings for the Mariner Hybrid?
The 2008 Mercury Mariner Hybrid received an overall N/A-star safety rating from NHTSA. Frontal crash: N/A stars. Side crash: N/A stars. Rollover: 3 stars (20.4% rollover probability). Electronic Stability Control: No. Forward Collision Warning: No. Lane Departure Warning: No. These ratings are based on standardized crash tests conducted by the National Highway Traffic Safety Administration.
Data from NHTSA federal complaints database. 116 complaints analyzed. Data confidence: high. Last updated: 2026-05-18.