2007 Mercury Mariner Engine Problems
- Complaints
- 7about this part
- Share
- 21%of 33 total for the year
- Median mileage
- 65,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the engine of the 2007 Mercury Mariner, 21% of the 33 complaints for this model year. Where a mileage was given, the median is 65,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My son was using our car he drove it to work... All was fine...he used the car to go get lunch in the shopping center... Drove back from the shopping center to a parking spot outside his job location... He then completed his shift at dick's sporting goods where my wife and I met up with him...we all proceeded to our car and truck which were parked across from one another...my wife and son got in the Mercury I got in my truck... My son tried to start the Mercury but it would not turn over...my wife tried still would not turn over ... …”
NHTSA complaint #10949952, filed 2017-02, 100,006 miles“I was driving to work and car began to make a loud rattle noise, od light flashed (od off) and pulled over. I attempted to pull back on road and car would not shift into 2nd gear. Transmission problem. 1800.00 repair. Now 2013 exactly 3 years later and car begins same thing all over again. Diagnostic test states needs new transmission. Told these cars have had these problems from the get go. Ford knows this! The problem is coolant is located in radiator and does not keep trans from overheating. I am now told it will be 3650.00 for another trans. This is a total mess. …”
NHTSA complaint #10511020, filed 2013-05, 57,000 miles“The car just lost power while driving. Surged a bit then was operating at reduced power like it was limping eventually it just stalled and the gas would just rev the engine. Ford fixed the car under warranty. If this has happened at highway speeds in traffic it would have caused a severe accident as cars would have been dodging a stalled car at highway speeds-.”
NHTSA complaint #10577046, filed 2014-04, 20,000 miles“Car lost power while driving-- it operated at a limp at first-- just prior to that went forward quick, then it just stalled while driving while in gear. The gas just made the engine rev. The car the next day after getting towed operated and the same thing happened while the service station took the car for a test drive. They had to tow it back. This same problem was fixed under warranty (20,000 on approx. 03/2008). It happened again. Ford refused to agree that there is something wrong with the design etc. If this had happened on the highway at highway speeds the results could have been tragic. …”
NHTSA complaint #10577052, filed 2014-04, 100,000 miles“The contact owns a 2007 Mercury Mariner. The contact stated that while driving 30 MPH, the vehicle stalled and lost power to all electrical components. The contact was able to restart the vehicle and drive home. The contact took the vehicle to a dealer where the failure could not be replicated. The vehicle was not repaired. The contact did not call the manufacturer. The failure mileage was 20,000. The VIN was not available.”
NHTSA complaint #10500538, filed 2013-02, 20,000 milesRelated service bulletins
- 10109070Sep 21, 2016The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic throttle bodies (ETBs). The ETC_ACT and ETC_DSD PIDs should not used to…
Engine: other model years
Other parts of the 2007 Mercury Mariner
11 complaintsElectrical system
7 complaintsVehicle speed control
4 complaintsAir bags
2 complaintsEngine cooling
2 complaintsSuspension
2 complaintsBrakes
1 complaintsOther or unknown
1 complaintsSeat belts
1 complaintsSteering
1 complaintsTires
1 complaints
← All problems reported for the 2007 Mercury Mariner
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology