really awful
Crashes / Fires:
1 / 2
Injuries / Deaths:
0 / 0
Average Mileage:
50,546 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2011 Ford F-150 drivetrain problems

drivetrain problem

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2011 Ford F-150 Owner Comments (Page 8 of 11)

« Read the previous 20 complaints

problem #75

Jan 232014

F-150 6-cyl

  • 69,000 miles


The eco boost V 6 motor started missing under acceleration causing massive loss of power on the highway. Took the truck to friendly Ford in springfield Missouri for immediate repairs. They admitted the cause was a design flaw on the inter cooler which in turn caused failure of three solenoids to fail. July 2013 I was accelerating onto highway and the miss fire happened again and did not quit until I pulled off the road and turned the motor off and then restarted the engine. The service rep at the Ford dealer reported the problem was extremely common and suspected a recall was coming. I asked him why Ford was not standing behind the obvious and dangerous design flaw and he said he thought they would have to eventually due to the magnitude of the problem.. I was charged $620.51 to correct very dangerous problems directly related to a Ford design problem.

- Galena, MO, USA

problem #74

Aug 122012

F-150 4WD 8-cyl

  • Automatic transmission
  • 30,000 miles
The contact owns a 2011 Ford F-250. The contact stated that while driving 65 mph, the vehicle would jerk violently and lunge forward. The vehicle was not taken to the dealer. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 30,000 and the current mileage was 52,000. Updated 2/26/14 the consumer stated the vehicle has a serious wobble.

- Florence , SC, USA

problem #73

Dec 242013


  • 61,148 miles
Coasting at low speed around 7mph I attempted to accelerate, instantly as I put my foot on the gas pedal, now not even making it to 10mph, the 3.5L ecoboost engine made an incredibly loud and hard bang and continued to grow louder and shake more violently. I came to a stop on the side of the road I shut down the truck to find oil spilling from the passenger side of the block. I had the truck towed to my local dealership and they found that two connecting rods had broke and destroyed the block. They is no concern from anyone at Ford about how this could have happened.

- Berwick, ME, USA

problem #72

Oct 072013

F-150 6-cyl

  • 35,500 miles


Returning home from a weekend camping trip with my family and pulling a travel trailer via I-81 in va, I depressed the accelerator approaching a long hill, and abruptly lost all engine and drive power, the engine shuddered violently, the transmission downshifted to lower gear and the check engine light flashed a few times. We had absolutely no power and I thought the engine was going to shut off. I was in the 2nd lane from the right and had to quickly move to the right lane then to the shoulder to avoid being hit from behind. This was very dangerous while pulling a 34' travel trailer. I had to pull the vehicle to the shoulder and stop completely to regain control. I had to put the truck in park and turn it off before it returned to somewhat normal drivability. While continuing to climb the uphill grade, the engine misfired and hesitated constantly. I could only apply gently pressure to the accelerator to keep the vehicle moving. Once over the hill the vehicle picked up speed and returned to normal drivability for the remainder of the trip. The same exact problem occurred again a few months later while driving South on rt-4 in md with my wife, and not pulling a trailer. This time I didn't shut the engine off, but had to pull to the shoulder to regain control and engine power. As I continued on RT4 the engine misfired and hesitated several more miles. Once at my destination I turned the vehicle off, then upon departure the vehicle operated more normal, but experienced misfire and hesitations several mile returning home. The next day the vehicle operated normally, but I took it to the Ford dealership to have it repaired. This is a very unsafe situation and makes me very leary driving this vehicle on a normal basis. If I was accelerating while crossing the highway and this problem happened, there is a great chance of getting into an accident or causing one.

- Huntingtown, MD, USA

problem #71

Dec 252013

F-150 6-cyl

  • 88,750 miles
The truck has a bad miss when going up hill, it has had the Ford fix and it still won't run. It's going to get someone killed.

- Stratford, OK, USA

problem #70

Oct 032011

F-150 6-cyl

  • 12,000 miles
I was driving my 2011 Ford F-150 4X4 with the 3.5 liter ecoboost engine on hwy 12 in buxton, N.C. and I went to pass a driver, accelerating from approximately 40 mph to 55 mph and the engine bogged and lost all power. I continued to hit the gas for about another second and the wheels then locked up and the truck had several violent jerking motions before coming to a complete stop. The engine would not turn back on for an hour. I had it towed to the Ford dealership (under warranty) and they reset the computer. The truck seemed to run ok in the time since then, with the exception of the occasional shuddering during hard acceleration. Now (December 2013) the truck will not accelerate at higher than 2,000 RPM when in 4th, 5th or 6th gear without shuddering and cutting power to the engine. The check engine light begins to flash during this and then turns off. Ford is not willing to cover the repair costs and despite speaking to several customer service representatives, no one at Ford has acknowledged this issue happening with any other vehicles.

- Asbury Park, NJ, USA

problem #69

Mar 102013


  • 75,000 miles


The contact owns a 2011 Ford F-150. The contact stated that while driving various speeds, the vehicle failed to accelerate. The contact continuously depressed the accelerator and the vehicle began to vibrate abnormally. The check engine light was also illuminated. The vehicle was taken to a dealer several times. The technician diagnosed that the air cooler needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the problem. The approximate failure mileage was 75,000.

- Keithville, LA, USA

problem #68

Jan 152012

F-150 6-cyl

  • 3,326 miles
Upon trying to pass a truck, when I stepped on the gas for added power, the engine convulsed and shook the entire truck, lost power, engine light flickered... I pulled over immediately, called the Ford dealership, they did a check through on star (type system). Said they saw nothing?! started back up, seemed to be fine once again. This has happened now multiple times. Always when stepping on the gas for added power, same scenario. This is the eco boost engine. While I love the power, it has failed me 5 times to date. Same problem as the PE 13-018 report.

- Apo, AE, USA

problem #67

Feb 012012


  • 3,500 miles
The contact owns a 2011 Ford F-150. The contact stated that while driving at approximately 55 mph, the accelerator failed to respond to acceleration attempts. Additionally, an error code (P0036) and the check engine warning light illuminated. The contact also mentioned that the vehicle failed to operate normally when driving in rainy weather. The vehicle was taken to a dealer but was not able to be diagnosed. The technician was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was notified. The failure mileage was 3,500.

- Kinmundy, IL, USA

problem #66

Sep 152011

F-150 6-cyl

  • 13 miles
I have been having problems with engine noise ranging from a deep howling to a sound like a steel chain being drug over an aluminum ladder. I have had problems with the sync, memory seats and steering wheel, auto start, and an ongoing problem with hesitation or miss firing in the engine that cause the truck to loose power on acceleration and go into limp mode. I have had some really close calls getting onto the highway where I was almost hit from behind when the truck lost power. I have had the truck in the shop 13 times and getting ready to go back for the 14th time. I have tried the BBB and the lemon law program which I was denied by a third party arbitrator. I was expecting that because a BBB employee said 93% of all people that file a lemon law claim in Missouri get denied. I have an extended warranty with 50,000 miles left on it and the Ford engineer in charge of repairs says he refuses to do anything about the engine noise anymore because of the past failed repairs. This is an V6 ecoboost. I don't know what to do next.

- Florissant, MO, USA

problem #65

Nov 262012


  • 73,000 miles


Event occurred 3 times over a period from 27 Oct 13 to 21 Nov 13, decelerating while towing a trailer. Speed varied all three times from a high of about 60mph, to a low of 45mph. Message center would turn orange and display a wrench symbol, while the engine discontinues producing power. After pulling over, simply turning the vehicle off, then restarting, everything appears normal again. Two Ford dealers "found no codes", and were unable to further diagnose the issue. The second dealer attempted to collect data via an onboard computer as well, but the event wouldn't repeat while the device was installed, nor was I towing during that time. One of these events occurred on a two lane road with no shoulder available. Traffic had to stop until I restarted. Dangerous at best. The third even occurred going up a one lane freeway flyover. I was able to coast past the bridge structures and onto the shoulder, however, this occurred during rain, and multiple other vehicles had to make accident avoiding maneuvers, including tractor trailer rigs. Very dangerous. I have replaced the vehicle.

- Palm Coast, FL, USA

problem #64

Mar 292012

F-150 5-cyl

  • 300 miles
Following two heavily laden 18 wheelers during a light rain storm for two or more miles on a paved, two lane county road, it came clear for me to pass, I accelerated and all went well for just long enough for me to get even with the first one in front of me. My momentum carried me far enough to pull back in front of the first truck. By that time I was in serious trouble. My truck would barely run, it was vibrating violently and there was no acceleration to get me out of the way of the truck I had just passed. Had he not braked hard for me there could have been a serious wreck. I've have had 5 other incidents with this vehicle. I've taken it up with fomoco, over a period the first year. Working through the Oklahoma BBB I was assured Ford would correct the problem. Fomoco sent a Texas rep to my work location to put the most recent fix on the vehicle. Following this fix, we continued into a dry spell, but as fate would would have it, I was in a heavy rain within the next 2 weeks and the problem reappeared. This time my wife was in the vehicle with me. She thought I had run over something because the action of the pickup was so violent. I've occasionally seen letters to the editor of motor trend's "truck trend". other people describing the exact thing I've experienced driving this same type vehicle (early model ecoboost V-6, those built prior to April 2011, I believe). I have a huge file from the time when I was trying very hard to get this corrected, dealerships, dates, times, correspondence, Ford tech bulletins, but I refuse to waste my time with you unless you contact me acting as if something might seriously be done. (214-850-9195, or E-mail, ardegibbs@gmail.com). I have enough to prove my vehicle has serious problems and fomoco admitted it. A transcript of my meeting with them through the Oklahoma BBB. It's interesting what they had to say. [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Oklahoma City, OK, USA

problem #63

Nov 182013

F-150 6-cyl

  • 39,000 miles
3.5L ecoboost engine failed to accelerate after a brief rest area stop while raining. Attempted to rejoin highway traffic on highway on ramp but engine shuttered and lost all power nearing causing a collision with a semitruck. I had to pull over on to the hard shoulder and restart engine to get vehicle to operate properly. Vehicle was received back from Ford for the 5th time for this exact same issue 1 week prior. Cac was changed again to the newest version, cac shield was installed and newest programming was installed. All tsbs for the 3.5L have been done trying to eliminate issue with no success. Live data showed engine load of 99% and 3 psi of turbo pressure at time of failure.

- Jacksonville , FL, USA

problem #62

Dec 082012

F-150 6-cyl

  • 3,000 miles
While driving, rear wheels lock up for a few seconds, then truck shakes and has no acceleration power. This is happening at least once weekly now with loss of power lasting from 10 to 45 seconds. Not safe when in traffic. Local dealer says they can't find anything wrong and that they have no tsb on it.

- Millstadt, IL, USA

problem #61

Sep 252013

F-150 6-cyl

  • 49,000 miles
Crossing table rock dam on dry, flat, level pavement after letting off gas in anticipation of stopping at upcoming light rear tires locked and went into skid squealing brand new Michelin tires with less than 500 miles on them. Nobody was directly behind me or would have caused wreck due to sudden deceleration with no brake lights since no brake applied. Tires squall like old vehicles with no ABS when brakes locked up. An employee was riding with me at the time and it scared both of us. Had we not been out of town and dependent on truck getting us home we would have not driven it again. After returning home truck did it a second time a couple of weeks later driving in town down stadium blvd at about 35 mph. Rear tires lock, skid and squall. In addition earlier intermittent hard downshifts that feel like someone hits you from behind but not a full lock condition as these two recent incidents. Also intermittent stalling when pulling away from stop light, stop sign, out of parking lot, or out of driveway - especially after idling. Stalls, hesitates, bucks, vibrates, giving it gas does not result in vehicle responding. Usually on "easy" acceleration meaning when just easing off from stop. Intermittent transmission sticking in 1st gear and won't shift out. Finally vehicle sometimes "surges" after putting in gear on cold start or when letting off gas and coasting - it actually picks up speed and lunges forward for just a second. There is something wrong with all the sensors and the computer is causing the engine / transmission / ABS brakes to behave in strange and unpredictable ways. My father, wife, and employee have all witnessed one or more of these issues while riding with me but intermittent so unable to replicate. Ford case opened but no resolution. Tell me drive it until it breaks so they can find problem but unsafe to do so.

- Jonesboro, AR, USA

problem #60

Feb 082012

F-150 6-cyl

  • 20,000 miles
Rainy day traveling on highway 19 near crockett, Texas. Tried to pass slow moving vehicle and engine stalled, check engine light came on and started missing. Lost power and I was forced on the side of the road to avoid collision. Took truck to dealer and he installed a small plate over inter cooler. Several months later while passing on a humid day same thing occurred with same results. Pulled to side of road because I could not get back into my lane due to other cars. Took back to Ford in October, 2013 and they installed another plate on bottom of intercooler and reprogrammed the computer. I have no faith in the repairs and will probably never try a pass in any humid or wet weather.

- Montgomery, TX, USA

problem #59

Jun 162012

F-150 6-cyl

  • 11,000 miles
First incident: After driving in the rain for a couple of hours, trying to accelerate out of a toll booth - the vehicle started to accelerate then suddenly lost power. It began to shudder and flash the engine light. After about a minute, the issue cleared up. Dealership pulled code then performed a tsb which installed a shroud over the cac. Incident two one year after first repair: Same scenario as first incident - pulling out of a toll booth after driving in the rain the truck lost power and engine light flashed. A minute later it recovered and resumed normally. After an argument with the dealer (they could not pull a code), they ordered and installed a new cac and shroud. Incident three two weeks after second repair: Pulled out to pass a slow moving vehicle. Truck lost power as it did in first two incidents. Engine light flashed then remained on steady. Had to abort the pass. Vehicle is returning to dealership pending diagnostics. There is an obvious defective design in these vehicles that could potentially result in a serious accident. Imagine pulling out of a toll booth in front of a tractor trailer truck and loosing all power to move. Not good. The value and safety of my vehicle is compromised. It needs a definitive fix or replacement.

- Bristol, NH, USA

problem #58

Jun 062012


  • 13,000 miles
The contact owns a 2011 Ford F-150. The contact stated that while driving approximately 40 mph, the vehicle vibrated as the contact passed another vehicle. The accelerator pedal was engaged with force however, the vehicle failed to increase speed. The failure recurred numerous times. The vehicle was taken to an authorized dealer four times and on one occasion, the catalytic converter was replaced. The failure continued after the repair was performed. The spark plug coils were also being replaced by the dealer. The manufacturer was not notified of the problem. The approximate failure mileage was 13,000.

- Sharpsburg, GA, USA

problem #57

Sep 292013

F-150 6-cyl

  • 49,700 miles
The vehicle experienced a rough idle then upon acceleration, severe shuddering and lack of power. Check engine light turned on and began flashing. Vehicle is equipped with a 3.5L gtdi engine. Vehicle then continued to experience complete lack of power and shudder while being driven to the dealership.

- Corona, CA, USA

problem #56

Jul 312013


  • 38,578 miles
Attempted to pass a car. Speed at time of attempt was 55mph. Time 2:20 P.M. and partly cloudy. Two lane road but had plenty of time to pass or an accident could have occurred. Pushed down on accelerator and the engine actually decreased speed/significant deceleration. I let up on gas pedal, maintained speed then was gradually able to pass. Think the turbo had stalled. This had happened once before, shortly after I purchased the truck. At that time I was merging onto interstate and it stalled out, for a shorter duration. After the July 31 incident, I took the truck to Ford to inquire about the issues some owners have had on the eco boast engine, which I have. No codes appeared so I was told they couldn't do anything. Then talked to regional customer service and got the same story. I am very concerned as I use the truck to tow a 26' trailer. When the eco boast turbo works, I have plenty of power to merge or pass. The above experience was scary and I did not have the trailer behind me at the time. Now I feel I can not reasonably depend on it to work as it should. I think it is the turbo but it could be the electronic gas pedal, or the transmission but I really do not think these are the issue. Please help! thank you.

- Kalamazoo, MI, USA

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