RoadVitals

2010 Ford Flex Engine Problems

Owner-reported complaints naming the engine system, filed with NHTSA

Data refreshed

Engine reportsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
38
Latest Oct 31, 2023
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
27%
of 139 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
1
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
0

What this page shows

Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components. Every record below is an owner-reported complaint about the 2010 Ford Flex submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 38 reports on file name it.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Owner reports naming engine

The 25 most recent of 38, in the owner's own words

Engine
Filed Oct 31, 2023

The contact owns a 2010 Ford Flex. The contact stated while driving 50 MPH, the steering wheel became firm, and the vehicle lost motive power. The contact pulled over to the side of the road and was able to restart the vehicle after 3 attempts. No warning light was illuminated. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the failure was due to the oil mixing with the coolant. The manufacturer was made aware of the failure and determined that the vehicle was not under warranty. The failure mileage was approximately 148,000.

NHTSA ID
11552870
Incident
Sep 4, 2023
Mileage
148,000 mi
Engine
Filed Mar 19, 2023

While driving at 65mph, vehicle started to accelerate funny and cel came on. was getting on the freeway and the vehicle overheated and CEL light came on. I was able to safely pull over before the vehicle died. Got vehicle towed to my home and when engine oil was checked, it was discovered that there was coolant in the oil. Took to a local shop where it was determined that the water pump had failed and dumped all of the coolant into the oil pan. Estimated cost of repair with labor is $5,000. Failure mileage was ~192,000. The oil was in good standing and gold in color 12 hours prior and was only driven ~45 miles at highway speeds before the failure happened. From what I can tell, this was a catastrophic failure of the water pump bearing seal that happened almost instantaneously. This needs to be looked into, as the repair bill does not match the issue. A water pump repair should not cost more than the vehicle.

NHTSA ID
11512619
Incident
Nov 7, 2022
EngineFuel system
Filed Sep 14, 2022

My 2010 Ford Flex began inadvertently surging forward in acceleration without me making it do this exactly 3 months after I purchased the vehicle. The Ford Dealer was unable to re-produce the problem on several occasions and said my vehicle was fine. No error messages reported in the computer. This has continued to happen sporadically since ownership. I have had another Ford Dealership (as well as an independent mechanic) try and reproduce and diagnose the problem with no luck. Several weeks ago I was driving my vehicle in my residential neighborhood when all of a sudden my car surged forward with great acceleration with no warning. I had to swerve into a driveway and cut the vehicle off to get the vehicle under control. I am 82 and have a heart condition. This safety issue is critical as someone could get hurt or killed. Ford has several complaints of this happening with several models. I believe it is a Ford design flaw in the vehicles electronic throttle system. Ford Corporate was put on notice of these events after the latest safety event. Please, I urge the NHTSA to issue a recall before lives are lost. I can no longer drive this vehicle as I am concerned someone is going to get hurt. It is being towed to the Ravenel Ford Dealership for inspection and diagnosis again.....

NHTSA ID
11484426
Incident
Aug 23, 2022
Engine
Filed Feb 14, 2020

TL* THE CONTACT OWNS A 2010 FORD FLEX. THE CONTACT STATED WHILE STOPPED AT A STOP SIGN THE VEHICLE BECAME INOPERABLE. THE VEHICLE WAS TOWED TO THE RESIDENCE. THE CONTACT STATED THE WATER PUMP FAILED WHICH FLOODED THE ENGINE. THE VEHICLE WAS TAKEN TO PLANET FORD LOCATED AT (20403 I-45, SPRING, TX 77388 281-719-3700) AND THE CONTACT WAS INFORMED THAT A DIAGNOSTIC TEST COULD NOT BE SCHEDULED FOR 6-8 WEEKS. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE MANUFACTURER STATED THAT THE ENGINE NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 192,000.

NHTSA ID
11309139
Incident
Feb 13, 2020
Mileage
192,000 mi
Engine
Filed Nov 7, 2019

2010 FORD FLEX WITH DURATEC 3.5L ENGINE - SUDDEN WATER PUMP FAILURE CAUSES COOLANT TO FLOOD THE ENGINE, WHICH CAN CAUSE THE ENGINE TO OVERHEAT AND CUT OFF WHILE DRIVING, WITHOUT WARNING. THIS HAPPENED TO ME WHILE DRIVING TO WORK. LUCKILY I WAS ABLE TO PULL OFF THE ROAD SAFELY. THERE ARE MANY OTHERS WITH THIS ENGINE WHO HAVE HAD THIS PROBLEM, BECAUSE THE WATER PUMP IS INSIDE THE ENGINE-- SEE E.G. HTTP://WWW.CARPROBLEMZOO.COM/FORD/FLEX/WATER-PUMP-PROBLEMS.PHP AND HTTPS://WWW.KTMC.COM/FORD-LINCOLN-WATER-PUMP-ENGINE-FAILURE .

NHTSA ID
11278748
Incident
Nov 4, 2019
Mileage
130,000 mi
Engine
Filed Oct 25, 2019

WE HAVE REPLACED THE TURBOS IN OR FORD FLEX ECOBOOST 5 TIMES WITHIN 2.5 YEARS!! THE FRONT AND REAR TURBOS BOTH JUST WENT AGAIN WITHIN ONE MONTH OF EACH OTHER!! WE WERE FINALLY TOLD BY A LINCOLN MECHANIC THE ISSUE IS A BAD/FAULTY OIL SEPERATOR MADE BY FORD. IT IS PUSHING TOO MUCH OIL INTO THE TURBOS CAUSING THEM TO LITERALLY BLOW UP!! SMOKE EVERYWHERE AND CAR IS UNDRIVABLE. I HAVE SMALL CHILDREN AND THIS IS COMPLETELY UNSAFE AND DANGEROUS!!

NHTSA ID
11271087
Incident
Oct 25, 2019
Mileage
112,000 mi
Engine
Filed Sep 7, 2019

WATER PUMP LEAKING INTO ENGINE OIL, WHAT SHOULD BE A $500 AT MOST REPAIR IS GOOD TO REQUIRE REPLACEMENT OF THE ENGINE BECAUSE OF POOR WATER PUMP DESIGN.

NHTSA ID
11253809
Incident
Aug 25, 2019
Mileage
180,056 mi
Engine
Filed Sep 6, 2019

TL* THE CONTACT OWNS A 2010 FORD FLEX. WHILE DRIVING 30 MPH, THE CONTACT HEARD A POPPING NOISE COMING FROM THE VEHICLE AND THE AIR CONDITIONING BEGAN TO BLOW OUT HOT AIR. THE CONTACT ALSO NOTICED THAT THE VEHICLE BEGAN TO LOSE POWER, OVERHEAT, AND THE CHECK ENGINE WARNING INDICATOR ILLUMINATED. THE CONTACT DROVE TO KEN GARFF WEST VALLEY FORD (4091 W 3500 S, WEST VALLEY CITY, UT 84120, 801- 559-0314) WHERE IT WAS DIAGNOSED THAT THE WATER PUMP FAILED AND CAUSED THE VEHICLE TO OVERHEAT. THE CONTACT STATED THAT THE ENTIRE ENGINE WAS RUINED DUE TO THE FAILURE AND WAS INFORMED THAT AN ENGINE REPLACEMENT WOULD COST APPROXIMATELY $8,000. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VEHICLE HAD NOT BEEN REPAIRED. THE FAILURE MILEAGE WAS 178,000. THE VIN WAS UNKNOWN.

NHTSA ID
11253744
Incident
Aug 28, 2019
Mileage
178,000 mi
ElectricalEngineFuel system
Filed Jun 28, 2019

ACCELERATING ON INTERSTATE RAMP, VEHICLE STALLED AND SHUT OFF. IT WOULD NOT STAY RUNNING. IT SPUTTERS AND DIES AFTER CRANKING. WE HAD AAA TOW IT OFF THE ROADSIDE AFTER 90 MINUTES WAITING.

NHTSA ID
11223103
Incident
Jun 27, 2019
Mileage
135,000 mi
Engine
Filed Mar 9, 2018
Fire reported

TL* THE CONTACT OWNS A 2010 FORD FLEX. WHILE DRIVING AT AN UNKNOWN SPEED, THE TURBOS FAILED AND CAUSED OIL TO BURN THROUGH THE MOTOR. THE FAILURE CREATED AN EXCESSIVE AMOUNT OF SMOKE TO COME THROUGH THE EXHAUST PIPES. HUBLER FORD IN SHELBYVILLE, INDIANA WAS MADE AWARE OF THE RECALL AND STATED THAT THE PARTS WERE UNAVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 110,000.

NHTSA ID
11078303
Incident
Jan 1, 2016
Mileage
110,000 mi
Engine
Filed Jan 12, 2018

THE ENGINE SHUT DOWN DURING A LONG-DISTANCE DRIVE RETURNING FROM A VACATION. THE CAR WAS TOWED TO A FORD DEALERSHIP. THE TECHS AT THE DEALERSHIP DETERMINED THAT THE ENGINE FAILED DUE TO A FAULTY (LEAKING) WATER PUMP. THIS WATER PUMP IS INSIDE THE ENGINE BLOCK. THUS, THE LEAK CAUSED CORRUPTION OF OTHER PARTS OF THE ENGINE AND COMPLETE ENGINE FAILURE. THIS PROBLEM WITH THE INTERNAL WATER PUMP HAS BEEN THE SUBJECT OF A RECALL FOR OTHER FORD MODELS, BUT NOT THE FORD FLEX. THE NATIONAL DATABASE OF AUTOMOTIVE TECHNICIANS, IDENTIFIX, REPORTS LEAKING INTERNAL WATER PUMPS TO BE THE NUMBER 1 PROBLEM WITH THE FLEX. HERE ARE THE SPECIFICS OF WHAT HAPPENED: WE HAD BEEN DRIVING FOR APPROXIMATELY 6 HOURS. I WAS AT CRUISING SPEED OF 75 MPH. AS I APPROACHED LUBBOCK TX, THE TEMPERATURE WARNING LIGHT CAME ON AND THE TEMPERATURE GAUGE HAD PEGGED ALL THE WAY TO 'HOT'. I REDUCED SPEED AND DROVE TO THE NEXT EXIT (APPROXIMATELY 1-2 MIN AWAY). AS I EXITED THE FREEWAY, THE ENGINE LIGHT CAME ON, AND MOMENTS LATER THE BATTERY LIGHT CAME ON. AT THAT POINT, I LOST POWER STEERING AND THE ENGINE SHUT DOWN. WE WERE ABLE TO PUSH THE CAR INTO A PARKING LOT ON THE FRONTAGE ROAD. THIS INCIDENT IS CONSISTENT WITH THE CLAIMS THAT HAVE LED TO THE SAFETY RECALL FOR OTHER FORD MODELS:ESCAPE SUVS FROM THE 2014 MODEL YEAR, PLUS THE 2014 AND 2015 COMPACT FIESTA ST, THE 2013 AND 2014 FUSION MIDSIZE CAR AND THE 2013 THROUGH 2015 TRANSIT CONNECT SMALL VAN (OBTAINED FROM USA TODAY, 1/3/2018). MY INSURANCE WILL NOT COVER THE DAMAGE WHICH HAS RESULTED IN THE CAR BEING "TOTALLED". THIS IS A KNOWN PROBLEM FOR FORD, AND I BELIEVE MY CAR SHOULD BE COVERED UNDER THE RECENTLY ANNOUNCED SAFETY RECALL. THIS PROBLEM IN THE FORD FLEX HAS BEEN DISCUSSED FOR YEARS DATING BACK TO AT LEAST 2008 (HTTPS://WWW.FORDFLEX.NET/FORUMS/VIEWTOPIC.PHP?T=17392)

NHTSA ID
11062516
Incident
Jan 5, 2018
Mileage
150,000 mi
Engine
Filed Jan 5, 2018

TL* THE CONTACT OWNS A 2010 FORD FLEX. WHILE DRIVING VARIOUS SPEEDS, THE TURBOS FAILED ON THE VEHICLE. THE CONTACT STATED THAT THE TURBOS WERE REPLACED ON THE VEHICLE FIVE TIMES WITHIN ONE YEAR, ALONG WITH THE CATALYTIC CONVERTER AND SOME SENSORS. THE CONTACT STATED THAT BLACK SMOKE EXITED FROM THE EXHAUST PIPES IN THE REAR OF THE VEHICLE WHEN THE TURBOS FAILED. PACIFICA FORD IN PHILADELPHIA, PENNSYLVANIA WAS MADE AWARE OF THE FAILURE AND REPAIRED THE VEHICLE, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VIN AND FAILURE MILEAGE WERE UNKNOWN.

NHTSA ID
11060716
Incident
Oct 31, 2017
BrakesElectricalEngine
Filed Dec 12, 2017

WHEN I DRIVE MY VEHICLE & APPLY THE BRAKE, THE BRAKE PEDAL VIBRATES & THE RPMS INCREASE AND THE VEHICLE STALLS OUT. WHEN MY HEAT IS ON HIGH WHETHER VENTS OR THE FLOOR, AND APPLY THE BRAKE WHILE DRIVING, THE BRAKE PEDAL VIBRATES AND THE RPMS INCREASE AND THE VEHICLE STALLS OUT.

NHTSA ID
11054115
Incident
Nov 9, 2017
Mileage
79,650 mi
Engine
Filed Nov 27, 2017

PISTON RINGS FAILED AT 103,000 MILES. TOTAL LOSS OF COMPRESSION AND BILLOWING WHITE SMOKE PRODUCED FROM THE EXHAUST. ALWAYS SERVICED REGULARLY.

NHTSA ID
11048635
Incident
Nov 25, 2017
Mileage
103,000 mi
Engine
Filed Nov 17, 2017

ENGINE STALLS OUT, WHILE DRIVING THE CAR AROUND TOWN. HAS OCCURRED TWICE, SEPARATED BY A FEW WEEKS. NO WARNING, OR ENGINE TROUBLE OR INDICATOR LIGHTS PRIOR OR AFTER THE EVENT. OCCURS WHILE DRIVING A LOW TO MODERATE SPEED BOTH TIMES, ABOUT 30 MPH. CAR CAN BE RESTARTED IMMEDIATELY AFTER AND DRIVES FINE. HAVE HAD MECHANICS CHECK FUEL AND AIR SENSORS AND LINES AND FIND NO OBVIOUS DEFECTS. OTHER FORD FLEX OWNERS REPORT SIMILAR PROBLEM SINCE 2009. RUMOR IS THAT REPLACING THE THROTTLE BODY CORRECTS THE ISSUE.

NHTSA ID
11047112
Incident
Nov 1, 2017
Mileage
79,000 mi
Engine
Filed Aug 21, 2017

WAS TRYING TO ACCELERATE AROUND A CAR AND LOSS ALL POWER AND CHECK ENGINE LIGHT IMMEDIATELY STARTED FLASHING AND THE ENGINE STARTED MISFIRING AND LOSS ALL POWER AND NOW THE FORD DEALER SAYS THAT I NEED A NEW ENGINE.

NHTSA ID
11016511
Incident
Aug 18, 2017
Mileage
70,000 mi
Engine
Filed Jul 14, 2017

WHILE MERGING ONTO A HIGHWAY THE ENGINE SUDDENLY LOST POWER AND BEGAN SHUTTERING/VIBRATING BADLY. THIS LOSS OF POWER NEARLY CAUSED A SEVERE ACCIDENT AS THE SUDDEN SLOW DOWN CAUSED CARS BEHIND US TO TAKE EVASIVE ACTION. THE CHECK ENGINE LIGHT ILLUMINATED IMMEDIATELY. WE DROVE THE CAR TO THE DEALERSHIP PER INSTRUCTIONS FROM THE SERVICE REP. THE VEHICLE HAS THE 3.5L ECOBOOST ENGINE. THE SERVICE TECH FIRST SAID AN IGNITION COIL WENT BAD AND REPLACED IT, ONLY TO DISCOVER THAT IT DID NOT FIX THE PROBLEM. THEY DID A CYLINDER COMPRESSION TEST AND WERE LOOSING COMPRESSION IN ONE CYLINDER. THE ENGINE HAD TO BE DISASSEMBLED TO DIAGNOSE THE PROBLEM. THE SERVICE TECH FOUND THE CYLINDER RINGS HAD FAILED IN ONE CYLINDER AND NOW HAS TO REPLACE THE WHOLE ENGINE AT A COST OF $7,800. THE ENGINE ONLY HAS 55,000 MILES ON IT! THERE WERE NO WARNING INDICATORS THAT ANYTHING WAS WRONG WITH THE ENGINE, AND IT HAS BEEN ROUTINELY SERVICED. FORD IS UNWILLING TO HELP IN ANY WAY WITH THE REPAIRS AS THE VEHICLE IS OUT OF WARRANTY.

NHTSA ID
11005358
Incident
Jul 4, 2017
Mileage
55,000 mi
Engine
Filed Apr 7, 2017

VEHICLE WAS TURNING OFF OF A STATE HIGHWAY INTO A SCHOOL ENTRANCE. WITHOUT WARNING (NO WARNING LIGHTS ON DASH) ENGINE STOPPED RUNNING. DUE TO ENGINE SHUT DOWN ALL AUXILIARY SYSTEMS LOST POWER. VEHICLE WAS MAKING A LEFT TURN INTO A SCHOOL ENTRANCE WHEN ENGINE TURNED OFF. IN THE MIDDLE OF THE TURN THE LOSS OF POWER STEERING AND POWER BRAKES MADE NEGOTIATING THE TURN UNSAFE. THE OPERATOR WAS UNABLE TO KEEP THE VEHICLE ON THE PAVED ENTRANCE AND ENDED UP OFF THE SHOULD AND INTO THE GRASS. FORTUNATELY THERE WERE NO PEDESTRIANS OR OBSTACLES. FAILURE COULD CAUSE A SAFETY ISSUE AT HIGHWAY SPEED DUE TO POTENTIAL FOR REAR ENDING DUE TO LOSS OF POWER. THIS ENGINE FAILURE IS DUE TO FORD 3.5 DURATEC INTERNAL WATER PUMP DESIGN. WHEN THE WATER PUMP SEALS FAIL, ALL COOLANT IS CONTAINED IN THE MOTOR AND COLLECTED IN THE OIL PAN. BY COLLECTING THE COOLANT IN THE OIL PAN IT CAUSED A P0016 CODE AND THE ENGINE TO SHUT OFF. THEIR WAS NO WARNING OF THIS. THE CAR WAS DRIVEN 3.5HRS THE PREVIOUS DAY WITH NO ISSUES OR WARNING LIGHTS. FORD IS UNWILLING TO RECOGNIZE THE PROBLEM. I FILED CLAIMS WITH FORD CUSTOMER SERVICE #11792792 AND CAS-11876774 ON THIS ISSUE. REPAIR BILL WAS $4100 TO REPLACE THE MOTOR WITH A SIMILAR USED MOTOR. THE VEHICLE REPAIR WAS JUST COMPLETED YESTERDAY AND I STILL FEEL UNSAFE AND UNCOMFORTABLE KNOWING THE SAME POTENTIAL FOR ENGINE FAILURE EXISTS. IT IS BOTH A SAFETY CONCERN AND AN FINANCIAL CONCERN. THEIR ARE MANY DOCUMENTED CASES OF THIS HAPPENING ON FORDFLEX.NET (15 CASES) ALSO ON FORDTAURUS.NET. PLEASE GOOGLE DURATEC 3.5 WATER PUMP FAILURE. THESE FORUMS DOCUMENT OTHER NHTSA CLAIMS FILED FOR EXACT REASONS.

NHTSA ID
10971174
Incident
Feb 25, 2017
Mileage
113,000 mi
EnginePowertrain (other)
Filed Jan 8, 2017

TOTAL MOTOR FAILURE WHEN DRIVING! TRANSMISSION FREQUENTLY SLIPS. MOTOR HAD TO BE REPLACED. WHEN PRESSURE EXHAUST FOR ECOBOOST IS REDIRECTED TO CYLINDER 3 AND 5 THE HEAD GASKET FAILS ALLOWING WATER TO ENTER THE HEAD OF MOTOR WHICH THEM STEAM FRIES THE CYLINDERS. THIS IS VERY COMMON IN THE 2010 FLEX WITH ECBOOST AND NEED TO BE RECALLED ASAP! MOTORS UP TO 100,000. MINE HAD 74000 WHEN FAILURE OCCURRED. *TR

NHTSA ID
10940393
Incident
Sep 24, 2016
Mileage
74,000 mi
Engine
Filed Aug 14, 2016

ECO BOOST ENGINE STALL DUE TO CONDENSATION OF AIR FROM THE COLD AIR COMPRESSOR IN THE TURBO CHARGER FOR THE ENGINE. HAVE HAD CAR SERVICED SEVERAL TIMES AND DEALER OR MECHANIC CAN NOT RESOLVE PROBLEM. HAPPEN IN FREEWAY AT HIGH SPEED BUT HAS ALSO HAPPENED IN THE STREET AT 20 - 30 MPH

NHTSA ID
10895792
Incident
Aug 12, 2016
Engine
Filed Jun 9, 2016

MAJOR ENGINE FAILURE WHILE DRIVING 45MPH. ENGINE HAS 108,000 MILES. NOW ENGINE NEEDS TO BE REPLACED. ENGINE JUST SHUT OFF WHILE DRIVING IN TRAFFIC ON US HWY 41 IN LAND O LAKE FL, REPAIR ESTIMATED AT $6500.

NHTSA ID
10873536
Incident
May 28, 2016
Mileage
108,000 mi
Engine
Filed Dec 18, 2015

WHILE WAITING AT A LIGHT IN MY 2010 FORD FLEX THE ENGINE WAS IDLING ROUGH, AFTER THE SIGNAL TURNED GREEN THE POWER SEEMED LOW AND SLUGGISH AS I ACCELERATED. WHEN I WAS AT ABOUT 45 MPH THE ENGINE POWER RETURNED AND SEEMED MORE NORMAL, SUDDENLY WITHOUT NOTICE THE ENGINE TURNED OFF AND ALL DASH LIGHTS ILLUMINATED. I WAS ABLE TO PULL INTO A DRIVE WAY BUT WAS VERY HARD AS THERE WAS NO POWER STEERING. I WAS ABLE TO COAST TO A STOP SAFELY. ONCE STOPPED THERE WAS A VERY STRONG SMELL OF COOLANT. I OPENED THE HOOD AND FOUND A LARGE AMOUNT OF COOLANT ON RIGHT SIDE OF ENGINE. MY CAR WAS TOWED TO MY HOME TO FIGURE OUT WHAT THE ISSUE COULD BE. ON FURTHER INSPECTION IT IS SUSPECTED THAT THE WATER PUMP FAILED WHICH IS INTERNAL TO THE TIMING CHAIN COVER AND THEREFORE DUMPED A LARGE AMOUNT OF COOLANT INTO THE CRANKCASE WHICH THEN CONTAMINATED THE ENGINE OIL AND OVER FILLED THE OIL PAN. I WAS FORTUNATE THAT THIS OCCURRED ON A CITY STREET AND NOT ON THE FREEWAY AS THIS COULD HAVE CAUSED A MAJOR ACCIDENT. ON FURTHER RESEARCH I HAVE FOUND THIS HAS OCCURRED MANY TIMES. THE ENGINE IN QUESTION IS THE CYCLONE ENGINE AND IS FORDS LATEST V6 FAMILY OF GASOLINE ENGINES INTRODUCED IN 2006, AND IS KNOWN AS THE DURATEC 35 WHICH DISPLACES 3.5 L, THE DURATEC 37 WHICH DISPLACES 3.7L AND THE ECOBOOST 35 WHICH IS A TWIN TURBO CHARGED VARIANT OF THE DURATEC 35, THESE ENGINES ARE INSTALLED IN THE FOLLOWING VEHICLES, 2007'PRESENT FORD EDGE, 2010'2012 FORD FUSION SPORT, 2011'PRESENT FORD MUSTANG, 2009'PRESENT FORD FLEX, 2010'PRESENT FORD TAURUS SHO, 2013'PRESENT POLICE INTERCEPTOR SEDAN, 2011'PRESENT FORD EXPLORER, 2013'PRESENT FORD POLICE INTERCEPTOR UTILITY, 2011'PRESENT FORD F-150, 2015'PRESENT FORD EXPEDITION/EXPEDITION EL, 2014'PRESENT FORD TRANSIT, 2015'PRESENT LINCOLN NAVIGATOR/NAVIGATOR L, 2010'PRESENT LINCOLN MKS, 2010'PRESENT LINCOLN MKT, 2007'PRESENT LINCOLN MKX, 2007'PRESENT MAZDA CX-9(MZI).

NHTSA ID
10811218
Incident
Dec 15, 2015
Mileage
151,000 mi
Engine
Filed Sep 29, 2015

TL* THE CONTACT OWNS A 2010 FORD FLEX. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 70 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS TOWED TO THE DEALER WHERE IT WAS DIAGNOSED THAT THERE WAS A MISFIRE ON CYLINDER NUMBER 3 AND 2 AND THAT THE FUEL INJECTOR NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, HOWEVER, THE FAILURE RECURRED WHILE DRIVING APPROXIMATELY 50 MPH. THE VEHICLE RESTARTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 47,000.

NHTSA ID
10778539
Incident
Sep 4, 2013
Mileage
47,000 mi
ElectricalEngine
Filed May 27, 2015

AS INDICATED BY A NUMBER OF FLEX OWNERS, MY FLEX SIMPLY DIED IN THE MIDDLE OF THE FREEWAY GOING 70 MPH. NO WARNING - LIGHTS ON DASH WENT ON, LOST ALL POWER INCLUDING POWER STEERING. AFTER MUSCLING THE CAR TO THE SHOULDER, PUTTING IN PARK AND SITTING FOR A FEW MINUTES, IT STARTED BACK UP. TOOK TO DEALER WHO SAID THEY COULD FIND NOTHING WRONG. EXTREMELY DANGEROUS. I WAS ALMOST REAR ENDED. HOW MANY DIFFERENT PEOPLE NEED TO BE AFFECTED BY THIS PROBLEM BEFORE FORD AND NHTSA TAKE ACTION.

NHTSA ID
10721761
Incident
Mar 2, 2015
Mileage
90,000 mi
Engine
Filed Dec 2, 2014

TL* THE CONTACT OWNS A 2010 FORD FLEX. WHILE DRIVING APPROXIMATELY 60 MPH, THE VEHICLE STALLED. NO WARNING INDICATORS WERE ILLUMINATED. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE ENGINE AIR FILTERS NEEDED TO BE CLEANED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THIS ISSUE. THE FAILURE MILEAGE WAS 52,843. THE VIN WAS UNAVAILABLE.

NHTSA ID
10661652
Incident
Nov 28, 2014
Mileage
52,843 mi

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

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Data on this page last refreshed .