← New search

2005 Mercury Montego

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

About this comparison →

When problems were reported

Mileage at the reported incident

123 reports with mileage · 12 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Power Train. Review the 49 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 27 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Vehicle Speed Control. Review the 24 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

10 crash reports2 fire reports5 injury reports

What owners actually said

135 reports
54,956 miles · Oct 27, 2009
Electrical System

TL* THE CONTACT OWNS A 2005 MERCURY MONTEGO. WHILE DRIVING 35 MPH THE TEMPERATURE GAUGE WENT FROM NORMAL TO ZERO AND THEN BACK UP TO NORMAL. THE VEHICLE WAS TAKEN TO THE DEALER AND THE WIRE THAT CAUSED THE TEMPERATURE GAUGE TO MALFUNCTION WAS REPLACED. THE FAILURE COULD CAUSE HIGH VOLTAGE IN THE ELECTRICAL CIRCUIT, WHICH COU…

Read full complaint

TL* THE CONTACT OWNS A 2005 MERCURY MONTEGO. WHILE DRIVING 35 MPH THE TEMPERATURE GAUGE WENT FROM NORMAL TO ZERO AND THEN BACK UP TO NORMAL. THE VEHICLE WAS TAKEN TO THE DEALER AND THE WIRE THAT CAUSED THE TEMPERATURE GAUGE TO MALFUNCTION WAS REPLACED. THE FAILURE COULD CAUSE HIGH VOLTAGE IN THE ELECTRICAL CIRCUIT, WHICH COULD HAVE LEAD TO A FIRE. THE CURRENT MILEAGE WAS 57,080. THE FAILURE MILEAGE WAS 54,956. UPDATED 11/13/09.*LJ THE CONSUMER ALSO STATED THE ENGINE LIGHT ILLUMINATED AS WELL. THE MECHANIC FOUND THREE CODES STORED FOR THE ENGINE COOLANT TEMPERATURE CIRCUIT. THEY INDICATED AN INTERMITTENT HIGH VOLTAGE IN THE ECT CIRCUIT. THE FREEZE FRAME DATE SHOWED 40 DEGREES INDICATING THE CIRCUIT WAS OPEN AT SOME POINT. EXTENSIVE TESTING WAS DONE OF THE COOLANT SENSOR AND RELATED WIRING AND IT WAS FINALLY DISCOVERED THAT A BAD SPOT IN THE SENSOR ORANGE WIRE INSIDE THE HARNESS AT THE BACK OF THE MOTOR WHERE IT TAKES A SHARP BEND. THE HARNESS WAS PULLED APART AND THE FAULTY SECTION WIRE WAS REPAIRED. UPDATED 11/17/09.*JB THE CONSUMER WANTS TO KNOW THE RESULT OF HIS COMPLAINT. UPDATED 01/21/10.*JB

NHTSA ODI #10289976

78,000 miles · Sep 22, 2009
Power Train

I PURCHASED A NEW 2005 MERCURY MONTEGO IN MAY 2005. THE CAR NOW HAS 85K MILES WITH THE 6 SPEED TRANSMISSION.THE TRANSMISSION HAS BEEN FINE ON SHORT TRIPS (35 MILES OR LESS) BUT ANYTHING OVER THAT AND IT STARTS DOING REALLY CRAZY STUFF. IT WILL DOWNSHIFT 3-4 GEARS AT HIGHWAY SPEEDS...SLAM INTO GEAR... THEN IMMEDIATELY UPSHIFT. TH…

Read full complaint

I PURCHASED A NEW 2005 MERCURY MONTEGO IN MAY 2005. THE CAR NOW HAS 85K MILES WITH THE 6 SPEED TRANSMISSION.THE TRANSMISSION HAS BEEN FINE ON SHORT TRIPS (35 MILES OR LESS) BUT ANYTHING OVER THAT AND IT STARTS DOING REALLY CRAZY STUFF. IT WILL DOWNSHIFT 3-4 GEARS AT HIGHWAY SPEEDS...SLAM INTO GEAR... THEN IMMEDIATELY UPSHIFT. THIS HAPPENS SO HARD THAT THE WHOLE CAR SHAKES. ONE TIME IT WAS SO BAD, WE FELT WE HAD BEEN HIT. SOMETIMES IT WILL GO TO DOWNSHIFT, AND JUST GOES TO NEUTRAL CAUSING MAJOR ISSUES WHEN INVOLVED WITH TRAFFIC TRYING TO GET OF THE ROAD. THIS IS A MAJOR PROBLEM WHICH COULD CAUSE AN ACCIDENT. WHEN SHIFTING FROM 3-2 AT LOW SPEEDS, IT WILL DOWNSHIFT BUT SHUDDER THE WHOLE CAR. ALL THESE SYMPTOMS OCCUR ONLY AFTER TRIPS LONGER THAN 35 MILES OR ON A VERY HOT DAY WHERE THE TRANSMISSION SEEMS TO HEAT UP. MY LOCAL FORD GARAGE HAS TRIED REPROGRAMMING THE TCM WITH NO SUCCESS (FIRST TSB). THEY NOW SAY I NEED A REMANUFACTURED TRANSMISSION AT A COST OF NEARLY $5000. FORD WILL NOT HELP IN ANY WAY EVEN THOUGH I FIRMLY BELIEVE THIS IS A FACTORY DEFECT. THE CAR HAS NEVER BEEN ABUSED, BEEN IN AN ACCIDENT, AND MAINTENANCE PERFORMED AT OR SOONER THAN RECOMMENDED. THE SHIFTING INTO NEUTRAL IS A SAFETY ISSUE. FORD NEEDS TO STEP UP AND ADMIT THEY HAVE A PROBLEM AND REPLACE THE TRANS, IT APPEARS AS THEY HAVE FIXED THE PROBLEM BECAUSE ALL THE TSB'S FOR THIS SYMPTOM (2 THAT I KNOW OF) AFFECTS ONLY VEHICLES MANUFACTURED BEFORE OCT 2005. HOW CAN FORD OR ANY OTHER COMPANY KNOW THEY HAVE AN ISSUE AND NOT TAKE CORRECTIVE ACTION. I HAVE ALWAYS BEEN A FORD MAN SINCE THE EARLY 1970'S. HOW I HAVE BEEN TREATED WITH THIS DEFECT COULD BE CONSTRUED AS CRIMINAL. I GUESS THEY FIGURE IF THEY HOLD OUT LONG ENOUGH, THE VEHICLES WILL ALL DIE AND GO AWAY AND THEY WONT HAVE ANY OBLIGATIONS WHATSOEVER. IN DOING RESEARCH ON THIS VEHICLE WITH THE 6 SPEED TRANS, THERE ARE LOTS OF US IN THE SAME SITUATION WITH THE SAME SYMPTOMS AND THE SAME REPLY FROM FORD. *TR

NHTSA ODI #10284885

50,000 miles · Sep 22, 2009
Power Train

I OWN A 2005 MERCURY MONTEGO FWD 6 SPEED. A COUPLE MONTHS AGO THE TRANSMISSION STARTED JUMPING AROUND, IT SEEMS LIKE IT WOULD NOT GO INTO TO GEAR AND WHEN IT DOES IT WILL SLAM REAL HARD. I BOUGHT THE CAR USED WITH 22000 MILES AND NOW IT HAS 52000 MILES. I'VE ALREADY REPLACED A MOTOR MOUNT BECAUSE OF THE HARD SHIFTING. THE DEALE…

Read full complaint

I OWN A 2005 MERCURY MONTEGO FWD 6 SPEED. A COUPLE MONTHS AGO THE TRANSMISSION STARTED JUMPING AROUND, IT SEEMS LIKE IT WOULD NOT GO INTO TO GEAR AND WHEN IT DOES IT WILL SLAM REAL HARD. I BOUGHT THE CAR USED WITH 22000 MILES AND NOW IT HAS 52000 MILES. I'VE ALREADY REPLACED A MOTOR MOUNT BECAUSE OF THE HARD SHIFTING. THE DEALERSHIP TOLD ME THAT IT MIGHT BE THE VALVE BODY WITCH IS AROUND 2000 DOLLARS WITH PARTS AND LABOR. FROM WHAT I HAVE RESEARCH ABOUT THIS CAR, IT IS A MAJOR ISSUE AND COULD GET SOMEONE HURT. I PURCHASED THIS VEHICLE FOR MY WIFE AND KIDS SO IT HAS NOT BEEN MISTREATED. THERE IS SOMETHING WRONG WITH THE TRANSMISSION TO START GOING OUT AROUND 50000 MILES. FROM WHAT I HAVE READ ON THE FORUMS THIS IS A PROBLEM AND FOR THE TRANSMISSION TO ALL OF A SUDDEN NOT WANT TO SHIFT RIGHT WHO'S TO SAY SOMEONE GETS HIT BECAUSE THEY COULDN'T GET OUT OF THE WAY IN TIME. I HAVE ALWAYS OWNED A FORD AND THIS CAR IS THE WORST. AS SOON AS I SAVE THE MONEY UP JUST SO THEY CAN EVEN LOOK AT IT WE ARE OUT OF A VEHICLE. *TR

NHTSA ODI #10284834

57,000 miles · Sep 16, 2009
Vehicle Speed Control

TL*THE CONTACT OWNS A 2005 MERCURY MONTEGO. SHE STATED THAT THE THROTTLE BODY FAILED WHICH MADE THE VEHICLE SHUT OFF IN THE MIDDLE OF THE HIGHWAY. SHE PULLED OVER AND TURNED THE ENGINE OFF AND BACK ON THEN IT SHUT OFF ON ITS OWN. THE FOLLOWING DAY THE FAILURE RECURRED AND THE CHECK ENGINE LIGHT ILLUMINATED ON THE INSTRUMENTAL PA…

Read full complaint

TL*THE CONTACT OWNS A 2005 MERCURY MONTEGO. SHE STATED THAT THE THROTTLE BODY FAILED WHICH MADE THE VEHICLE SHUT OFF IN THE MIDDLE OF THE HIGHWAY. SHE PULLED OVER AND TURNED THE ENGINE OFF AND BACK ON THEN IT SHUT OFF ON ITS OWN. THE FOLLOWING DAY THE FAILURE RECURRED AND THE CHECK ENGINE LIGHT ILLUMINATED ON THE INSTRUMENTAL PANEL. THE DEALER STATED THAT THEY WOULD REPAIR THE VEHICLE AT THE OWNERS EXPENSE WHEN THE PART WERE AVAILABLE. THEY LATER STATED THAT THE PART WAS AVAILABLE AND THAT THEY HAVE EXHAUSTED ALL OPTIONS TO REPAIR THE VEHICLE. THE VEHICLE WAS NOT REPAIRED; HOWEVER, IT REMAINED IN THE DEALERS POSSESSION. THE SERVICE MANAGER STATED THAT THEY WOULD NOT REPAIR THE VEHICLE AND THE CONTACT SHOULD RETRIEVE IT. THE VEHICLE IDENTIFICATION NUMBER WAS UNAVAILABLE. THE FAILURE AND CURRENT MILEAGE WERE 57000.

NHTSA ODI #10284223

95,000 miles · Aug 29, 2009
Power Train

DURING DRIVING SPEED, WHEN I NEED TO SPEED UP TO AVOID BEING HIT ON THE HIGHWAY, THE TRANSMISSION HESITATES THEN SHIFTS SO HARD THAT THE CAR SHAKES. HAPPENS EVERY TIME. *TR

NHTSA ODI #10282233

55,000 miles · Aug 24, 2009
Power Train

TRANSMISSION SEEMS TO SLIP AND SPUTTER WHILE DOWNSHIFTING. WILL NOT ACCELERATE WITHOUT SLIPPING WHEN HEATED UP. *TR

NHTSA ODI #10281546

20,000 miles · Aug 3, 2009
Fuel System, GasolineLatches/locks/linkagesService Brakes, Hydraulic

1CHECK ENGINE LIGHT (GAS EMISIONS) 2. FAILURE IS ONCE A MONTH THEN LIGHT GOES OFF 2 NO PARTS OR REPAIRS AS THE DEALER SHIP WILL NOT REPLACE WILL THE RECALL REPAIR? *TR

NHTSA ODI #10279196

52,450 miles · Jun 1, 2009
Electrical SystemFire

SAW SMOKE COMING FROM PASSENGER'S OUTSIDE MIRROR, THE METAL WAS HOT, THEN SAW A SMALL FLAME, UNDER THE MIRROR, SO WE PULLED THE FUSE. A WEEK LATER WE PUT THE FUSE BACK IN & SMOKE STARTED COMING FROM THE MIRROR,AGAIN, SO WE PULLED THE FUSE & HAVE LEFT IT OUT. THIS FUSE ALSO CONTROLS THE POWER SEATS, ALONG WITH THE OUTSIDE MIRROR…

Read full complaint

SAW SMOKE COMING FROM PASSENGER'S OUTSIDE MIRROR, THE METAL WAS HOT, THEN SAW A SMALL FLAME, UNDER THE MIRROR, SO WE PULLED THE FUSE. A WEEK LATER WE PUT THE FUSE BACK IN & SMOKE STARTED COMING FROM THE MIRROR,AGAIN, SO WE PULLED THE FUSE & HAVE LEFT IT OUT. THIS FUSE ALSO CONTROLS THE POWER SEATS, ALONG WITH THE OUTSIDE MIRRORS. BOTH TIMES THE CAR WAS NOT RUNNING. *TR

NHTSA ODI #10272606

38,000 miles · Feb 21, 2009
Power TrainCrash

MONTEGO CVT TRANSMISSION STICKS SOMETIMES WHEN YOU HIT THE GAS,AND SOMETIMES GO INTO SAFETY MODE TOOK IT TO THE DEALER THEY SAID NO CODES WHERE FOUND .I THINK SOMEONE SHOULD PUT SOME PRESSER ON FORD FOR THEM TO LOOK INTO THIS MATTER. *TR

NHTSA ODI #10259506

37,693 miles · Jan 8, 2009
Power Train

MY NAME IS [XXX] AND I AM A FORMER EMPLOYEE OF THE FORD ASSEMBLY PLANT THAT WAS IN HAZELWOOD MISSOURI. I HAVE BEEN TRYING TO CONTACT SOMEONE TO HELP ME IN A TERRIBLE SITUATION. I BOUGHT A 2005 MERCURY MONTEGO BECAUSE I FELL IN LOVE WITH THE CAR, AND UP UNTIL NOW, NOT ONLY AM I DISAPPOINTED BUT VERY UNSATISFIED WITH MY CAR AND F…

Read full complaint

MY NAME IS [XXX] AND I AM A FORMER EMPLOYEE OF THE FORD ASSEMBLY PLANT THAT WAS IN HAZELWOOD MISSOURI. I HAVE BEEN TRYING TO CONTACT SOMEONE TO HELP ME IN A TERRIBLE SITUATION. I BOUGHT A 2005 MERCURY MONTEGO BECAUSE I FELL IN LOVE WITH THE CAR, AND UP UNTIL NOW, NOT ONLY AM I DISAPPOINTED BUT VERY UNSATISFIED WITH MY CAR AND FORD AUTO COMPANY. I WAS DRIVING MY CAR ONE NIGHT AND IT WOULD NOT GO FORWARD, THE MORE I PRESS THE ACCELERATOR THE MORE IT DID NOT MOVE. I HAD TO PULL OVER TO THE SIDE OF THE ROAD. MY CAR WOULD NOT GO INTO FORWARD OR REVERSE. THE NEXT DAY I HAD IT TOWED TO PAUL CREAME FORD TO BE CHECKED. [XXX] CALLED ME BACK AND TOLD ME THAT I NEED A COMPLETE TRANSMISSION AND IT WOULD COST $6,000.00, (BEFORE THEY EVEN CHECKED IT OUT.) I THEN PROCEEDED TO CALL OR WHO I THOUGHT WAS FORD THE MANUFACTURER TO SEE IF THEY WOULD STAND BEHIND THEIR VEHICLE. YES, I AM OVER THE MANUFACTURER WARRANTY BUT ONLY BY 1,763 MILES, IN OTHER WORDS I HAVE 37,693 MILE ON MY CAR. THEY CONTACTED THE DEALERSHIP AND THE DEALERSHIP CONTACT ME, AND TOLD ME THAT WOULD ONLY PAY PART OF IT AND THAT THEY WOULD NOT KNOW THE PRICE UNTIL THEY CHECK THE VEHICLE OUT. A FEW DAYS HAD PASS AND THE DEALER CALLED MY AND SAID, " IT COST $5,500.00 TO REBUILD YOUR TRANSMISSION AND FORD WILL ONLY PAY $3,500." [XXX] ALSO SAID THAT I WOULD BE RESPONSIBLE OF THE REST. I CALLED FORD BACK AND SPOKE TO A SUPERVISOR AND BASICALLY STATED THAT THEY WOULD NOT AND WILL NOT OVER TURN THAT DECISION. I HAVE BEEN TRYING TO CONTACT [XXX] , AND [XXX] BUT HAVE HAD NO SUCCESS. I FEEL THAT MY CAR HAS A MANUFACTURING DEFECT THAT IS THE REASON I NEED A TRANSMISSION AND I ALSO FEEL THAT $5,500 IS A OUTRAGEOUS PRICE TO PAY FOR A TRANSMISSION FOR ANY VEHICLE. MY CONCERN IS THAT FORD WILL NOT OR WONT STAND BEHIND THEIR CARS. I NEED HELP IN GETTING THIS MATTER RESOLVED. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ODI #10254297

Official recalls

2

06V383000 · Latches/locks/linkages:doors:latch

Oct 5, 2006

ON CERTAIN PASSENGER VEHICLES CURRENTLY REGISTERED IN THE FOLLOWING STATES: ALASKA, COLORADO, CONNECTICUT, DELAWARE, IDAHO, ILLINOIS, INDIANA, IOWA, KANSAS, KENTUCKY, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, MONTANA, NEBRASKA, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, NORTH DAKOTA, OHIO, PENNSYLVANIA, RHODE ISLAND, SOUTH DAKOTA, UTAH, VERMONT, WEST VIRGINIA, WISCONSIN, AND WYOMING. THE SIDE DOOR LATCH MECHANISMS MAY EXPERIENCE WATER INTRUSION ALLOWING THE LATCH MECHANISM TO FREEZE IN COLD WEATHER.

Consequence & remedy

Consequence: AS A RESULT, THE DOOR LATCH PAWL MAY NOT RETURN TO THE LATCH POSITION WHEN THE DOOR IS CLOSED, AND THE DOOR COULD OPEN WHILE THE VEHICLE IS MOVING.

Remedy: DEALERS WILL INSTALL A SHIELD OVER THE FRONT LATCHES; SEAL A DRAIN HOLE IN THE REAR WINDOW TRIM MOLDING ON THE FREESTYLE REAR SIDE DOORS; AND APPLY GREASE TO ALL FRONT AND REAR SIDE-DOOR LATCH MECHANISMS FREE OF CHARGE. THE RECALL BEGAN ON NOVEMBER 8, 2006. OWNERS MAY CONTACT FORD AT 1-800-392-3673.

05V515000 · Fuel System, Gasoline:storage:tank Assembly:mounting

Nov 9, 2005

ON CERTAIN PASSENGER VEHICLES, THE STRAPS THAT SECURE THE FUEL TANK TO THE VEHICLE BODY MAY BREAK, CAUSING THE FUEL TANK AND FUEL TANK HEAT SHIELD TO DROP ON THE DRIVESHAFT (ALL WHEEL DRIVE VEHICLES) OR EXHAUST SYSTEM (FRONT WHEEL DRIVE VEHICLES).

Consequence & remedy

Consequence: IF THIS HAPPENS, DRIVERS MAY NOTICE A NOISE OR A FUEL LEAK. A FUEL LEAK IN THE PRESENCE OF AN IGNITION SOURCE COULD RESULT IN A FIRE.

Remedy: DEALERS WILL REPLACE BOTH FUEL TANK STRAPS. THE RECALL BEGAN ON DECEMBER 1, 2005. OWNERS MAY CONTACT FORD AT 1-800-392-3673.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

1

PE11018 · Idle Instability

Opened May 11, 2011 · Closed Feb 7, 2013

Status: closed (inferred from source dates) · Vehicle Speed Control

On November 29, 2012, Ford Motor Company (Ford) initiated Customer Satisfaction Program 12N03 to extend warranty coverage terms for repair of engine idle RPM surge caused by throttle body deposits in all model year (MY) 2005 through 2007 Ford Freestyle, Five Hundred and Mercury Montego vehicles.The program extends the coverage for up to 10 years of service or 150,000 miles from the warranty start date of the vehicle (all vehicles are eligible for the program through May 31, 2013, regardless of mileage).Dealers will repair vehicles exhibiting the condition by removing and cleaning the throttle body and reprogramming the PCM with software containing an updated idle speed control strategy.According to Ford, some of the affected vehicles may experience momentary, intermittent engine idle RPM surge (idle flare) when stopped or during low speed driving maneuvers such as in a parking lot or driveway.Unstable idle speed control (dips and flares) around the target engine speed (700 rpm) can occur in vehicles with deposit build-up in the throttle body when the system adjusts engine speed in response to changes in engine load, typically from power steering application or air-conditioner compressor cycling.Idle speed control logic is only active at vehicle speeds below 3.5 mph and when the accelerator pedal is not applied.Ford testing of a vehicle with a worst case throttle body measured a maximum idle flare of 1360 RPM lasting approximately 1 second, which Ford indicated was consistent with system design to limit vehicle speed and acceleration in idle control mode.Ford indicated that the test vehicle was held in place with normal brake effort and that vehicle speed remained under 4 mph without the brake pedal applied.In addition to throttle body deposit accumulation, symptoms associated with the condition may include Check Engine lamp illumination and diagnostic trouble codes (DTCs) P0505, P0506 or P061B.Ford attributed the surge condition to changes in idle air flow resulting from the progressive buildup of deposits in the throttle body from normal Positive Crankcase Ventilation (PCV) system operation.This condition was not adequately compensated for in the original Powertrain Control Module (PCM) calibration.Ford issued a technical service bulletin on August 15, 2011 (TSB 11-8-5), releasing an updated powertrain control calibration for vehicles with CVT transmissions.On October 19, 2011, Ford issued a second bulletin (TSB 11-10-21) superseding TSB 11-8-5 and including updated powertrain control calibration for vehicles with 6-speed transmissions.Prior to Ford issuing the TSB?s, owner?s experiencing the alleged defect either received no repairs, if dealers could not duplicate the condition, or had the throttle body cleaned or replaced, which only provided temporary correction until the throttle deposit build-up returned.Ford?s revised powertrain calibrations appear to be effective remedies for the idle instability caused by build-up of throttle body deposits.However, even after the TSB?s were released, many owners experiencing the condition continued to have difficulty with proper diagnosis and repair as dealers were often either unable to duplicate the condition or were unfamiliar with the new repair procedures.Ford's new program addresses those concerns.NHTSA's testing and complaint analysis indicate that the idle speed control issue in the subject vehicles can only occur at very low speeds, are very brief events, are easily controlled by moderate brake pedal forces and result in minor increases in vehicle speed even with no braking.This investigation is closed.The closing of this in