YearToAvoid

2009 Mercury Mariner Hybrid Problems, Recalls & Reliability

Verdict

Avoid

Complaint Index

80/100

#2 most-complained of 6 Mariner Hybrid years

Based on NHTSA complaints per model-year, not a reliability rating. Methodology

The 2009 Mercury Mariner Hybrid has 21 owner complaints and 0 safety recalls on file with NHTSA. Its Complaint Index is 80 out of 100 — #2 highest of 6 Mariner Hybrid model years (verdict: Avoid). The most reported problem area is engine (9 complaints, 43% of the total). Complaints report 2 crashes.

Complaints
21
Recalls
0
Crashes / fires
2 / 0
Injuries / deaths
0 / 0
NHTSA overall rating
Not rated
EPA combined MPG
30
31.5 city / 29 hwy

Top 2009 Mercury Mariner Hybrid problems

NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.

  1. Engine9 (43%)
  2. Steering8 (38%)
  3. Brakes4 (19%)
  4. Electrical System3 (14%)
  5. Fuel System3 (14%)
  6. Transmission & Powertrain1 (5%)
2009 Mercury Mariner Hybrid complaints: complaints filed per month3Aug 2010Oct 2011Jan 2015Jan 2016Nov 2016Feb 2017Mar 2019
28 complaints filed with NHTSA from Aug 2010 to May 2019; peak Oct 2014 (3).

2009 Mercury Mariner Hybrid recalls

No safety recalls on record for this model year.

2009 Mercury Mariner Hybrid fuel economy and fuel cost

City
31.5 MPG
Highway
29 MPG
Combined
30 MPG
Annual fuel cost (EPA)
$2,175
15,000 mi/yr
Fuel
Regular
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2009 compared with other Mariner Hybrid years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100200620072008200920102012
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2007Caution6031027
2008Avoid100116030
2009Avoid8021030
2010Best209030.5
2012No verdict010—

All Mercury Mariner Hybrid years: best and worst →

Frequently asked questions

Is the 2009 Mercury Mariner Hybrid a reliable year?
Judged by NHTSA owner complaints and recalls, the 2009 Mercury Mariner Hybrid ranks #2 of 6 among Mariner Hybrid model years (Complaint Index 80/100, verdict: Avoid). It has 21 complaints and 0 recalls on file. This reflects reported safety-related problems, not an overall reliability rating.
What are the most common problems with the 2009 Mercury Mariner Hybrid?
The most reported problem areas are engine (9 complaints), steering (8 complaints), and brakes (4 complaints). The median mileage at the time of failure in complaints that report it is 93,000 miles.
Does the 2009 Mercury Mariner Hybrid have any recalls?
No safety recall campaigns list the 2009 Mercury Mariner Hybrid in NHTSA’s recall database at the time of the last data update.
What is the fuel economy of the 2009 Mercury Mariner Hybrid?
EPA rates the 2009 Mercury Mariner Hybrid at 30 MPG combined (31.5 city / 29 highway), with an estimated annual fuel cost of $2,175. Where several configurations exist, the median is shown.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.