How many fuel system complaints does the 2011 Mercury Mariner have?

NHTSA lists 28 Fuel System complaints for the 2011 Mercury Mariner, which is 32% of the 87 total complaints filed for that model year.

Is there a recall for the 2011 Mercury Mariner fuel system?

Yes. Recall 16V777000 covers certain 2010-2011 Mercury Mariner vehicles for a fuel delivery module flange that Ford will replace with a redesigned fuel supply port.

At what mileage do fuel system problems typically show up?

NHTSA complaint data shows a median mileage of 46,000 miles at failure for fuel system issues on the 2011 Mercury Mariner.

Do the fuel system complaints involve crashes or fires?

NHTSA records zero crashes, zero fires, and zero injuries among the 28 Fuel System complaints filed for the 2011 Mercury Mariner.

What symptoms do owners describe most often?

Owners commonly describe sudden loss of power or stalling at highway speed, a wrench warning light, and unresponsive acceleration, often requiring an engine restart.

2011 Mercury Mariner Fuel System Problems

Owners filed 28 Fuel System complaints for the 2011 Mercury Mariner, 32% of all complaints for that year. NHTSA also lists recall 16V777000 covering the fuel delivery module flange. Median mileage at failure was 46,000 miles.

Fuel System complaints: 28; 32% of 87 complaints
All complaints this year: 87
Crashes reported: 0
Fires reported: 0
Injuries reported: 0
Median mileage: 46,000 mi
Related recalls: 1

Typical fuel system symptoms owners report

Vehicle loses power or stalls suddenly at highway speeds, sometimes going into a coasting or 'limp mode' state.
A wrench-shaped warning light illuminates along with loss of throttle response, leaving the accelerator unresponsive.
Engine hesitates or drops to idle at lower speeds before stalling, often requiring the driver to restart it.
Owners report the vehicle stalling from a stopped position or when accelerating into traffic.
Some owners link the stalling and throttle-body symptoms to repeated part replacements, describing the issue as recurring across multiple repairs.

When 2011 Mercury Mariner fuel system complaints were filed

First complaint Nov 1, 2012, latest Feb 11, 2026.

28 complaints filed with NHTSA from Nov 2012 to Feb 2026; peak Aug 2013 (3).

Fuel System recalls for the 2011 Mercury Mariner

NHTSA 16V777000Oct 26, 2016Fuel System329,265 vehicles
Fuel system, gasoline:delivery:fuel pump
Ford Motor Company (Ford) is recalling certain model year 2010-2012 Ford Escape vehicles manufactured February 26, 2009, to April 29, 2012, and 2010-2011 Mercury Mariner vehicles manufactured February 25, 2009, to December 12, 2010. On vehicles with a 3.0L engine, the Fuel Delivery Module (FDM) may crack, causing a fuel leak.
Risk: A fuel leak in the presence of an ignition source increases the risk of a fire.
Remedy: Ford will notify owners, and dealers will replace the FDM flange with one that has a redesigned fuel supply port, free of charge. Remedy parts are currently unavailable. Interim notices were mailed to owners on December 13, 2016. Owners will receive a second notice when remedy parts become available. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 16S41.

Fuel System complaints by Mariner model year

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

20057 (10%)
20066 (10%)
20070 (0%)
200811 (2%)
200930 (10%)
201063 (23%)
201128 (32%)

Frequently asked questions

How many fuel system complaints does the 2011 Mercury Mariner have?: NHTSA lists 28 Fuel System complaints for the 2011 Mercury Mariner, which is 32% of the 87 total complaints filed for that model year.
Is there a recall for the 2011 Mercury Mariner fuel system?: Yes. Recall 16V777000 covers certain 2010-2011 Mercury Mariner vehicles for a fuel delivery module flange that Ford will replace with a redesigned fuel supply port.
At what mileage do fuel system problems typically show up?: NHTSA complaint data shows a median mileage of 46,000 miles at failure for fuel system issues on the 2011 Mercury Mariner.
Do the fuel system complaints involve crashes or fires?: NHTSA records zero crashes, zero fires, and zero injuries among the 28 Fuel System complaints filed for the 2011 Mercury Mariner.
What symptoms do owners describe most often?: Owners commonly describe sudden loss of power or stalling at highway speed, a wrench warning light, and unresponsive acceleration, often requiring an engine restart.