Problems · NHTSA complaints
2005 Mercury Mariner problems
Owners filed 67 complaints about the 2005 Mercury Mariner with NHTSA between Aug 2005 and Dec 2021. The most-cited component is power train (15).
Complaints
67
Filed with NHTSA
Crashes
7
Reported by owners
Fires
0
Reported by owners
Injuries
17
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Power train15
- Electrical system10
- Vehicle speed control9
- Air bags8
- Engine8
- Engine and engine cooling8
- Visibility6
- Tires5
- Structure3
- Fuel/propulsion system3
- Fuel system, gasoline3
- Suspension3
- Exterior lighting2
- Service brakes2
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
3
6
11
6
4
5
4
2
2
4
8
4
4
1
2
0
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2005 | 3 |
| 2006 | 6 |
| 2007 | 11 |
| 2008 | 6 |
| 2009 | 4 |
| 2010 | 5 |
| 2011 | 4 |
| 2012 | 2 |
| 2013 | 2 |
| 2014 | 4 |
| 2015 | 8 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 0 |
| 2021 | 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
15 reports1 crash1 related recall
“ON THE FREEWAY AND CAR SUDDENLY HAS OVERDRIVE LIGHT BLINKING, AT THE SAME TIME I BEGAN LOSING POWER, I WAS ABLE TO GET OFF FREEWAY BUT NOT AFTER I OPEN HOOD AND NEARLY GOT RUN OVER. I WAS CHECKING TO SEE IF THERE WAS OVERHEATING OR SMOKE. BUT NOTHING. I HAVE ALREADY REPLACED PCM, TRANSMISSION, AND TORQUE CONVERTER. CONSEQUENTLY MY SHIFTER IS BROKEN AND YOU CAN SEE DOWN INTO TRANSMISSION. OBVIOUSLY NO I CAN'T DRIVE, I WILL HAVE TO HAVE VEHICLE TOWED. WHY HASN'T TRANSMISSION BEEN RECALLED ON THIS VEHICLE. I COULD NOT THINK ABOUT IF MY CHILD WOULD HAVE BEEN WITH ME AND STOOD IN FRONT OF CAR. HE NEVER WOULD HAVE BEEN ABLE TO MOVE THAT QUICKLY OR EVEN WORSE WITH FREEWAY DRIVING I EVEN COULD HAVE BEEN HIT FROM BEHIND.”
Electrical system
10 reports
“TL* THE CONTACT OWNS A 2005 MERCURY MARINER. WHILE DRIVING 60 MPH, THE VEHICLE STALLED AND THE ANTI-THEFT SYSTEM WARNING INDICATOR ILLUMINATED. THE CONTACT TURNED OFF AND RESTARTED THE ENGINE, BUT THE VEHICLE WOULD JERK WHILE DRIVING. THE VEHICLE WAS DRIVEN TO THE CONTACT'S RESIDENCE. THE DEALER (NORTHTOWNE LINCOLN, 21 NE VIVION RD, KANSAS CITY, MO 64118) AND MANUFACTURER WERE CONTACTED AND STATED THAT THERE WAS NO RECALL ASSOCIATED WITH THE VIN. THE FAILURE MILEAGE WAS 165,250. THE VIN WAS NOT AVAILABLE.”
Vehicle speed control
9 reports1 crash
“THE GAS PEDAL STUCK WHILE DRIVING, THE CAR WOULD ONLY IDLE AND NOT MOVE. THE CAR WAS IN TRAFFIC AND ALMOST HIT BY ANOTHER VEHICLE. ON A PRIOR DATE THE GAS PEDAL STUCK AND WOULD NOT MOVE, CAR JUST IDLED IN A PARKING LOT FOR ABOUT FIVE MINUTES. THIS WASN'T FIRST TIME IT STUCK, BUT PRIOR TIMES IT ALWAYS RELEASED RIGHT AWAY. *TR”
Air bags
8 reports5 crashes
“TL* THE CONTACT OWNS A 2005 MERCURY MARINER. WHILE THE CONTACT WAS DRIVING 45 MPH, ANOTHER VEHICLE VEERED INTO HIS PATH WITH THE BRIGHT LIGHTS ILLUMINATED. TO AVOID CRASHING INTO THE OTHER VEHICLE, THE CONTACT MOVED OVER INTO THE RIGHT LANE. THE VEHICLE STRUCK A DITCH AND ROLL OVERED FOUR TIMES. THE AIR BAGS FAILED TO DEPLOY. THE CONTACT SUSTAINED ARM, NECK, AND BODY INJURIES. HE AND THE PASSENGER WERE TRANSPORTED TO THE HOSPITAL FOR MEDICAL ATTEINTION. A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED TO A TOW YARD. THE VEHICLE WAS NOT TAKEN TO A DEALER OR AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 191,000.”
Engine
8 reports
“CD4E - ENGINE STALLING ON ENGAGEMENT/STOPPING. VEHICLE STALLED AT THE RED LIGHT OF AN EXIT RAMP OFF THE HIGHWAY. VEHICLE STALLED WHEN AT A COMPLETE STOP AND WOULD NOT ENGAGE WHEN PUT INTO DRIVE OR REVERSE.”
Engine and engine cooling
8 reports
“THE CAR STALLED ON ME TWICE TODAY. THE FIRST TIME IT HAPPENED, I WAS TRAVELING ON GIBSON AT 45 MPH AND MADE A LEFT TURN SUDDENLY CAR STALLED WHILE IN GEAR. I WAS ABLE TO COAST TO THE SHOULDER, HOWEVER I COULD NOT RESTART THE CAR. I CHECKED THE MANUAL AND CAME ACROSS THE FUEL SAFETY CUT OFF SWITCH LOCATED ON THE FRONT PASSENGER SIDE PANEL. I PUSHED THE RESET BUTTON AND WAS ABLE START THE CAR. SECOND TIME, I WAS APPROACHING A TRAFFIC LIGHT THE CAR STALLED ON ME AGAIN. I PUSHED THE RESET BUTTON AGAIN, AND STARTED THE CAR. AT THIS POINT I AM NOT SURE WHAT IS HAPPENING TO MY CAR, AND I DON'T WANT TO BE ON THE FREEWAY AT HIGH SPEEDS WHEN IT SUDDENLY HAPPENS AGAIN. IT APPEARS TO ME THAT THE FUEL FLOW IS BEING SUDDENLY CUT OFF TO THE ENGINE. *TR”
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.