YearToAvoid

2009 Mercury Mariner Fuel System Problems

NHTSA has 30 owner complaints about fuel system problems in the 2009 Mercury Mariner, 10% of all 315 complaints for this model year. That is #2 highest fuel system complaint count among 7 Mariner model years. Median mileage at failure: 73,000 miles.

Fuel System complaints
30
10% of 315
Crashes reported
0
Fires reported
0
Injuries reported
0
Median mileage
73,000 mi
Related recalls
0

When 2009 Mercury Mariner fuel system complaints were filed

First complaint Nov 10, 2009, latest Dec 6, 2023.

2009 Mercury Mariner fuel system complaints: complaints filed per month4Nov 2009Jun 2013Sep 2013Jan 2014Apr 2016Jun 2018Mar 2021
30 complaints filed with NHTSA from Nov 2009 to Dec 2023; peak Jul 2013 (4).

Fuel System recalls for the 2009 Mercury Mariner

No safety recalls on record for this model year.

Fuel System complaints by Mariner model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 20057 (10%)
  2. 20066 (10%)
  3. 20070 (0%)
  4. 200811 (2%)
  5. 200930 (10%)
  6. 201063 (23%)
  7. 201128 (32%)

Frequently asked questions

Does the 2009 Mercury Mariner have fuel system problems?
NHTSA has 30 owner complaints about the fuel system in the 2009 Mercury Mariner, 10% of all complaints for this model year. Median mileage at failure is 73,000 miles.
Which Mercury Mariner year has the most fuel system complaints?
The 2010 Mercury Mariner has the most fuel system complaints (63), compared with 30 for the 2009.
Is there a fuel system recall for the 2009 Mercury Mariner?
No NHTSA recall campaign for the 2009 Mercury Mariner is classified under fuel system. Complaints alone do not trigger a recall; check the full recall list and your VIN.

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.