Problems · NHTSA complaints

2007 Mercury Mariner problems

Owners filed 33 complaints about the 2007 Mercury Mariner with NHTSA between Jul 2006 and Nov 2025. The most-cited component is power train (11).

Complaints
33
Filed with NHTSA
Crashes
1
Reported by owners
Fires
0
Reported by owners
Injuries
1
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Power train11
  2. Engine7
  3. Electrical system7
  4. Vehicle speed control4
  5. Air bags2
  6. Engine and engine cooling2
  7. Suspension2
  8. Seat belts1
  9. Steering1
  10. Service brakes, hydraulic1
  11. Tires1
  12. Other / unknown1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 10, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20062
20070
20081
20093
20101
20112
20124
20136
20144
20151
20161
20173
20180
20191
20202
20211
20220
20230
20240
20251

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Power train

11 reports1 related recall
“TL* THE CONTACT OWNS A 2007 MERCURY MARINER. WHILE THE CONTACT'S SON WAS DRIVING THE VEHICLE, THE TRANSMISSION SLIPPED AND WENT INTO OTHER GEARS. WHEN THE VEHICLE WAS IN NEUTRAL, IT SHIFTED INTO DRIVE ON ITS OWN. ON ANOTHER OCCASION, THE CONTACT'S SON STATED THAT THE VEHICLE FELT AS IF IT WERE DRAGGING AFTER IT JUMPED. IN ADDITION, "OVERDRIVE" APPEARED ON THE CONTROL PANEL THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC, BUT WAS NOT DIAGNOSED OR REPAIRED. THE VEHICLE WAS THEN TOWED TO ANOTHER INDEPENDENT MECHANIC WHO WAS UNABLE TO DUPLICATE THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT TO CALL NHTSA. THE DEALER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 152,000.”
Owner complaint to NHTSAFiled May 30, 2019Power trainODI 11210806

Engine

7 reports
“90sWhile driving, the vehicle will suddenly display a warning message that says “Stop Safely Now”. When this message appears, the hybrid system overheats and the vehicle immediately loses power. The gasoline engine and electric motor both shut down without warning, even at highway speeds. I am forced to coast to the side of the road, which is extremely dangerous in traffic. This happens after the vehicle has been driven for a short period of time. The cooling fans appear to be running, but the hybrid electronics system overheats and triggers the shutdown safety mode. After waiting for the vehicle to cool down, it will restart, but the problem continues every time the car reaches normal driving temperature. This issue matches the symptoms covered under Ford’s previous safety actions and customer satisfaction programs for the 2005–2008 Ford Escape and Mercury Mariner Hybrid (hybrid electronics overheating and shutdown). The dealership states that no recall appears under my VIN, but the safety failure is identical. The vehicle becomes unsafe and inoperable with no advance warning beyond the brief “Stop Safely Now” message. This defect poses a serious risk of a…”
Owner complaint to NHTSAFiled Nov 29, 2025EngineODI 11701977

Electrical system

7 reports
“THE RECALL THAT FORD IS RECALLS 2007MERCURY MARINER WHILE DRIVING VEHICLE JUST SHUTS OFF I WAS WITH MY DAUGHTER DRIVING ON THE HIGHWAY LUCKY I WAS ABLE TO SWITCH ALL 4 LANES THE ENGINE GETS HOT TEMPTER GAUGE READING NORMAL IT STAYS IN THE MIDDLE TURN VEHICLE TTB BACK ON PRESS PEDAL NO POWER PUMP THE PEDAL AND HOPES IT STAYS ON ITS BEEN ACTING THREE MONTHS. *TR”
Owner complaint to NHTSAFiled Jun 4, 2020Electrical systemODI 11327297

Vehicle speed control

4 reports
“THE "VEHICLE SPEED SENSOR" FAILED PREMATURELY, CAUSING THE ABS TO DISABLE. ITEM WAS INSPECTED AND REPAIRED BY A FORD MECHANIC AND HE ADVISED THIS WAS PREMATURE FAILURE NOT CAUSED BY ABUSE. *TR”
Owner complaint to NHTSAFiled Dec 9, 2011Service brakes, hydraulic, Vehicle speed controlODI 10439211

Air bags

2 reports1 crash
“REAR-ENDED A SNOW PLOW GOING 30-35 MPH WHEN I WAS GOING 60 MPH AND THE DRIVER-SIDE AIRBAG FAILED TO DEPLOY RESULTING IN SERIOUS INJURY.*DT*JB*DT*JB*DT*DT*JB*JB*DT*JB*JB*DT*JB*DT”
Owner complaint to NHTSAFiled Mar 2, 2021Air bagsCrash reportedODI 11398743

Engine and engine cooling

2 reports
“I PURCHASED THE VEHICLE WITH 6,000 MILES ON IT. I KEPT UP MY NORMAL MAINTANCE ON THE VEHICLE AND REPLACED THINGS WHEN NEEDED. AT APPROXIMATELY 42,000 MY TRANSMISSION WOULD NO LONGER SHIFT THE GEARS. THE VEHICLE WAS BROUGHT TO WALLACE DEALERSHIP OF WHICH THEY KEPT MY VEHICLE FOR ALMOST 2 WEEKS. THEY EXPLAINED THEY DID AN OVERHAUL OF THE TRANSMISSION AND FIXED REPAIRS ON IT SO THAT THEIR WOULD BE NO FURTHER PROBLEMS WITH TRANSMISSION LATER ON DOWN THE ROAD. NOW AT 84,735 MILES LATER, I AM ONCE AGAIN HAVING TRANSMISSION PROBLEMS AND MY VEHICLE WILL NOT GO INTO GEAR. BECAUSE I AM OUT OF WARRANTY MY VEHICLE WILL SIT UNTIL I CAN MAKE THE REPAIRS AS A TRANSMISSION REPLACEMENT IS NOT A CHEAP EXPENSE. THIS IS A SERIOUS PROBLEM WITH IN THIS CAR AND DESERVES EXTREME PRIORITY OF INVESTIGATION ON A RECALL FOR THIS YEAR, MAKE, AND MODEL OF VEHILE. I AM RECEIVING NO HELP FROM THE FORD COMPANY AND I AM FINDING IT EXTREMELY DIFFICULT THAT THIS PROBLEM IN THIS VEHILCE HAS NOT BEEN RESOLVED OR DEALT WITH. I HAVE HAD A PRIVATE TRANSMISSION COMPANY EXAMINE MY VEHILCE (HAS NOT TOUCHED IT), OF WHICH THEY DISCOVERED, THE INTERNAL FILTER IS CLOGGING THE CVT (CONSTANT VELOCITY…”
Owner complaint to NHTSAFiled Jan 12, 2012Engine and engine cooling, Power trainODI 10443529
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.