Most common 2009 Mercury Mountaineer problems
Share of the 6 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercury Mountaineer complaints by model year
Best Mountaineer years: 2009, 2010, 2001. Years to avoid: 2002, 1997, 1998, 2004, 1999. Compare all years →
2009 Mercury Mountaineer engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 4.6L 8-cyl | 6-speed automatic | RWD | 15 / 21 / 17 |
| 4.0L 6-cyl | 5-speed automatic | RWD | 14 / 20 / 16 |
| 4.6L 8-cyl | 6-speed automatic | 4WD/AWD | 14 / 19 / 16 |
| 4.0L 6-cyl | 5-speed automatic | 4WD/AWD | 13 / 19 / 15 |
EPA ratings. Class: SUV.
Frequently asked questions
Is the 2009 Mercury Mountaineer a good car?
Based on 6 owner complaints filed with NHTSA, the 2009 Mountaineer rates better than average: 93% fewer complaints than a typical year of the Mountaineer at the same age. It is one of the best Mountaineer years by this measure. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2009 Mercury Mountaineer?
The steering — 2 complaints, 33% of all complaints for this model year. Next are the seats (2) and speed control & acceleration (1).
How many recalls does the 2009 Mercury Mountaineer have?
NHTSA lists no recalls for the 2009 Mercury Mountaineer. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the Mercury Mountaineer?
The best years by complaints, compared at the same age, are 2009, 2010 and 2001. Years to avoid or approach with caution: 2002, 1997, 1998, 2004 and 1999. See the full Mercury Mountaineer years comparison.
At what mileage do 2009 Mercury Mountaineer problems happen?
The median mileage reported in complaints is about 47,000 miles; 60% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.