What fuel system problems do 2010 Mercury Mariner owners report most?

Owners most often describe sudden loss of power or throttle response, engine stalling or surging, and the vehicle entering limp mode, frequently linked to throttle body failure and diagnostic codes P2111 or P2112.

How common are fuel system complaints for the 2010 Mercury Mariner?

NHTSA lists 63 Fuel System complaints for the 2010 model year, which is 23% of all 270 complaints filed for that year.

Is there a recall for the 2010 Mercury Mariner fuel system?

Yes, campaign 16V777000 covers 2010-2012 Ford Escape and 2010-2011 Mercury Mariner vehicles for a fuel system issue, though it targets the fuel supply port flange rather than the throttle body problem described in most complaints.

At what mileage do these fuel system problems typically appear?

The median mileage at failure reported to NHTSA for this issue is 47,881 miles.

Did the 2010 Mercury Mariner fuel system issue cause any crashes or injuries?

NHTSA data for this component and year shows 0 reported crashes, fires, or injuries.

2010 Mercury Mariner Fuel System Problems

NHTSA lists 63 Fuel System complaints for the 2010 Mercury Mariner, 23% of all complaints filed for the year, with a median mileage at failure of 47,881. A related recall, campaign 16V777000, addresses a fuel system component but is separate from the throttle body issue most owners describe.

Fuel System complaints: 63; 23% of 270 complaints
All complaints this year: 270
Crashes reported: 0
Fires reported: 0
Injuries reported: 0
Median mileage: 47,881 mi
Related recalls: 1

Typical fuel system symptoms owners report

Sudden loss of power or throttle response while driving, often paired with a dashboard wrench warning light.
Vehicle enters limp mode at highway or city speed, sometimes repeatedly over a short drive.
Diagnostic codes P2111 and P2112 are frequently cited, pointing to throttle body malfunction.
Engine stalls or surges at low speed, then temporarily runs normally after restart.
Owners report the throttle body needed replacement, with some describing part shortages during repair.
Some incidents occurred at highway speed and were described as near misses with surrounding traffic.

When 2010 Mercury Mariner fuel system complaints were filed

First complaint Mar 2, 2013, latest May 11, 2025.

63 complaints filed with NHTSA from Mar 2013 to May 2025; peak Jul 2013 (11).

Fuel System recalls for the 2010 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

What fuel system problems do 2010 Mercury Mariner owners report most?: Owners most often describe sudden loss of power or throttle response, engine stalling or surging, and the vehicle entering limp mode, frequently linked to throttle body failure and diagnostic codes P2111 or P2112.
How common are fuel system complaints for the 2010 Mercury Mariner?: NHTSA lists 63 Fuel System complaints for the 2010 model year, which is 23% of all 270 complaints filed for that year.
Is there a recall for the 2010 Mercury Mariner fuel system?: Yes, campaign 16V777000 covers 2010-2012 Ford Escape and 2010-2011 Mercury Mariner vehicles for a fuel system issue, though it targets the fuel supply port flange rather than the throttle body problem described in most complaints.
At what mileage do these fuel system problems typically appear?: The median mileage at failure reported to NHTSA for this issue is 47,881 miles.
Did the 2010 Mercury Mariner fuel system issue cause any crashes or injuries?: NHTSA data for this component and year shows 0 reported crashes, fires, or injuries.