2009 Mercury Mariner Suspension Problems
- Complaints
- 3about this part
- Share
- 1%of 315 total for the year
- Median mileage
- 163,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the suspension of the 2009 Mercury Mariner, 1% of the 315 complaints for this model year. Where a mileage was given, the median is 163,000 miles. 1 of these say a crash was involved, according to the filers.
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.
“The vehicle AC unit water drains directly over the front sub-frame and rusts through the frame, at which point the front driver side suspension will collapse and loss of steering results. This problem was acknowledged for some escape vehicles, but not its Mercury Mariner equivalent, even though it shares same part/problem. Dealer refuses to cover repair and cust sevice suggested I contact NHTSA.”
NHTSA complaint #11349924, filed 2020-08, 150,000 miles“Drivers rear shock rusted off the wheel well causing wheel to snap and metal frame to hit the ground while I was traveling 40 mph. At this time the other wheels locked up and started squealing causing loss of control of vehicle shooting me across lanes and hitting curbs on both sides. This was heard all the way inside a church and they came running out. If I had not been able to gain control it would have flipped. The vehicle is available for inspection. …”
NHTSA complaint #11674297, filed 2025-07“The contact owns a 2009 Mercury Mariner. While driving 60 MPH, the vehicle made an abnormal noise and shook. The contact stated that the vehicle exhibited the same symptoms as listed in NHTSA campaign number: 15e045000 (suspension). The vehicle was taken to an independent mechanic who diagnosed the vehicle and stated that the wheel bearings failed. The vehicle was not repaired. The manufacturer and dealer were not notified of the failure. The failure mileage was 176,000.”
NHTSA complaint #11173108, filed 2019-01, 176,000 milesSuspension: other model years
Other parts of the 2009 Mercury Mariner
167 complaintsEngine
53 complaintsTransmission and drivetrain
44 complaintsVehicle speed control
41 complaintsFuel system
30 complaintsElectrical system
22 complaintsOther or unknown
15 complaintsBrakes
14 complaintsEngine cooling
7 complaintsWheels
7 complaintsAir bags
4 complaintsElectronic stability control
4 complaints
← All problems reported for the 2009 Mercury Mariner
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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