There are 9 owner-reported speed control & cruise complaints for the 2011 Mercury Marinerin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
DRIVING DOWN A HIGHWAY AT 60MPH THE 2011 MERCURY MARINER STOPPED ACCELERATING. PULLED OVER TO THE SIDE OF THE ROAD. WAITED 3 SECONDS AND RESTARTED THE CAR. IT HESITATED TO TURN OVER BUT DID RESTART. *TR
TRAVELING ON 2 LANE ROAD AT 55 MPH. ENGINE SET AT CRUISE CONTROL SPEED WHEN POWER WAS LOST. VEHICLE FELT LIKE IT WAS COASTING, THE ACCELERATOR WOULD NOT WORK. I WAS ABLE TO COAST TO A STOP ON A SIDE STREET, THEN HAD MY VEHICLE TOWED TO THE DEALER FOR REPAIRS. I CHECKED WEB SITES LAST NIGHT AND FOUND THIS TO BE A RECURRING PROBLEM WITH FORD ESCAPES AND MARINERS. COST OF REPAIR WAS $382.37 AND NOT COVERED FOR ANY REIMBURSEMENT BY FORD/LINCOLN. CUTTING OFF LIKE THIS IS EXTREMELY DANGEROUS AND PLACES OCCUPANTS AT RISK FOR SERIOUS INJURY. *TR
AS I WAS DRIVING MY 2011 MERCURY MARINER IT SUDDENLY LOST THE POWER TO ACCELERATE (ENGINE STILL RUNNING). THE WRENCH LIGHT ILLUMINATES AT THIS TIME. I COULD NOT DO ANYTHING TO INCREASE SPEED (PRESSING ON THE ACCELERATOR DID NOTHING). THE ONLY FIX IS TO SHUT DOWN THE ENGINE AND RE-START. THE MILEAGE IS 69,XXX. THIS FIRST OCCURRENCE HAPPENED ON 7/25/2013, HOWEVER, THE SAME SYMPTOMS HAVE OCCURRED RANDOMLY SEVERAL TIMES SINCE THAT TIME. I EXPLAINED THE SYMPTOMS TO MY LOCAL FORD DEALER SERVICE DEPARTMENT AND INDICATIONS ARE A DEFECTIVE THROTTLE BODY. *TR
TL* THE CONTACT OWNS A 2011 MERCURY MARINER. THE CONTACT STATED THAT WHILE EXITING THE HIGHWAY RAMP AT APPROXIMATELY 30 MPH, THE VEHICLE LOST ACCELERATION THEN THE MIL AND CHECK ENGINE WARNING LIGHTS ILLUMINATED. THE CONTACT PERFORMED A DIAGNOSTIC WHICH LOCATED THE FAILURE AT THE THROTTLE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE AND CURRENT MILEAGE WAS 41,926.
I WAS ON ONRAMP, VEHICLE SLOWED DOWN, WRENCH LIGHT LIT UP ON DASHBOARD. VEHICLE WOULD NOT ACCELERATE. I PULLED TO THE SIDE OF THE HIGHWAY AND RESTARTED VEHICLE. VEHICLE CONTINUED TO DO THIS FOR THE DURATION OF OUR TRIP. *TR
TL* THE CONTACT OWNS A 2011 MERCURY MARINER. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 30 MPH, THE RPMS INCREASED AS THE VEHICLE INDEPENDENTLY DECELERATED. THE CONTACT SHUT THE ENGINE OFF AND RESTARTED THE VEHICLE. THE FAILURE CONTINUED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSIS. THE TECHNICIAN STATED THE THROTTLE BODY WOULD HAVE TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 37,755. *TR
DEFECTIVE THROTTLE BODY. *TR
TL* THE CONTACT OWNS A 2011 MERCURY MARINER. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE WOULD SHAKE VIOLENTLY. THE CONTACT MENTIONED THAT THE MOST RECENT TIME THE FAILURE OCCURRED, THE VEHICLE DECELERATED INDEPENDENTLY AND WITHOUT WARNING. THE VEHICLE WAS TOWED TO THE DEALER. THE TECHNICIAN DIAGNOSED THAT THE THROTTLE BODY WAS DEFECTIVE AND NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 20,000 AND THE CURRENT MILEAGE WAS 58,000.
TL* THE CONTACT OWNS A 2011 MERCURY MARINER. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE WOULD STALL WITHOUT WARNING. THE VEHICLE WOULD SPORADICALLY HESITATE WHEN ACCELERATING WITH THE IMMEDIATE ILLUMINATION OF THE TRANSMISSION WARNING LIGHT. THE VEHICLE WAS LATER TOWED TO THE DEALER WHERE THE CONTACT WAS ADVISED THAT FUEL EMISSION AND THE THROTTLE BODY WOULD REQUIRE REPROGRAMMING. THE VEHICLE WAS REPAIRER HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS CONTACTED AND OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS APPROXIMATELY 18,000. THE CURRENT MILEAGE WAS APPROXIMATELY 40,000.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026