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
Complaints by component
One complaint can cite several components
- Power train11
- Engine7
- Electrical system7
- Vehicle speed control4
- Air bags2
- Engine and engine cooling2
- Suspension2
- Seat belts1
- Steering1
- Service brakes, hydraulic1
- Tires1
- 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
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
2
0
1
3
1
2
4
6
4
1
1
3
0
1
2
1
0
0
0
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2006 | 2 |
| 2007 | 0 |
| 2008 | 1 |
| 2009 | 3 |
| 2010 | 1 |
| 2011 | 2 |
| 2012 | 4 |
| 2013 | 6 |
| 2014 | 4 |
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 0 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 | 1 |
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.
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.”
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…”
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”
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”
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”
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…”
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.