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Other or unknownPart report

2010 Mercury Mountaineer Other or unknown Problems

Complaints
1about this part
Share
8%of 13 total for the year
Median mileage
90,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 1 complaints about the other or unknown of the 2010 Mercury Mountaineer, 8% of the 13 complaints for this model year. Where a mileage was given, the median is 90,500 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.

“Doors locking mechanism malfunctioning and coding numbers not functioning. Being locked out when using code #s. Chain crankin harshly but not unlocking doors. When using key instead of code key does not unlock nor lock any doors except drivers door lock.”

NHTSA complaint #11287792, filed 2019-12, 90,500 miles

Other or unknown: other model years

YearComplaintsShare of year
201018%
2009117%
200866%
200767%
200698%
200545%
200494%
200364%
200282%
200115%
200043%
199911%
199852%
199721%

Other parts of the 2010 Mercury Mountaineer

Brakes
5 complaints
Vehicle speed control
4 complaints
Engine
3 complaints
Fuel system
2 complaints
Steering
2 complaints
Transmission and drivetrain
2 complaints
Electrical system
1 complaints
Interior lighting
1 complaints
Seat belts
1 complaints
Seats
1 complaints
Body and structure
1 complaints

← All problems reported for the 2010 Mercury Mountaineer

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