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really awful
Crashes / Fires:
1 / 2
Injuries / Deaths:
0 / 0
Average Mileage:
48,918 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 7 of 11)

« Read the previous 20 complaints

problem #83

Mar 272014

F-150 6-cyl

  • 56,500 miles


Engine stumbles or misfires at highway speeds, which lead to a loss of power when accelerating.

- Frisco, TX, USA

problem #82

Dec 192013

F-150 6-cyl

  • 99,500 miles
My family and I were on our way to disney world in orlando, Florida when my 2011 Ford 3.5 liter ecoboost F150 truck completely shut down on the interstate 10 highway in the middle of nowhere, probably 60 miles to the East of tallahassee Florida. At first I thought that we were not going to make it, as the truck completely died out. I pulled off to the side and finally got the vehicle started. We had been steady state cruising with the cruise set at 70 for atleast 2-2.5 hours. After doing some reading I see that it was probably condensation in the intercooler that entered the intake tract when I had accelerated to go around a big truck that was barely making it up a hill on interstate 10. This was a real bad experience, this has happened atleast 2 times since then. Luckily I have not had a wreck or crashed, but as I keep reading up, I see many people complaining about the ecoboost F150. Now, I have a truck in the shop with a blown motor, and I can only imagine that the water getting into the motor and the motor trying to compress that water was what caused my engine failure. I metal from the internal rotating assembly shoot through the side of my engine block last week. I believe that happened due to the water and the water bending the connecting rods. Please help.

- Friendswood, TX, USA

problem #81

Mar 112014

F-150 6-cyl

  • 45,000 miles
Since owning a new 2001 Ford F-150 ecoboost, I have noticed several issues with the engine. Loss of power when accelerating, shuttering when braking and poor fuel economy. I have taken the vehicle in for service and they have applied technical service bullitins, but the issue returns. The latest problem was a failed coil pack causing my vehicle to almost stall on the highway. Ford didn't cover the part under their powertrain warranty.

- Cumming, GA, USA

problem #80

Feb 212014


  • 41,700 miles


Loss of power brakes upon initial start-up and movement. The vacuum pump that provides assistance to power brakes and 4X4 wheel hubs fails without notice. Driver expects to stop vehicle under normal operating pressure applied to brake pedal. Vehicles does not respond to normal force and keeps moving. Extreme force to be provide to brake pedal to slow vehicle to a stop. This could result in injury or death if another person in the path of the vehicle. Ford will not recall or cover repairs of faulty pump. Pump is located behind front headlight on vehicle. Cost of part is $565 + labor to repair to be paid by owner. Serious safety concern for persons near vehicle without proper operation of braking system. An investigation needs to be opened immediately upon Ford. Understanding is that Ford redesigned vacuum system for 2014 model year to correct safety issue. Redesign should be mandated on previous model years to correct safety issue.

- North Canton, OH, USA

problem #79

Feb 142014


  • 87,000 miles
Has a problem with the turbo intercooler getting condensation and make the truck lose power check engine light starts to flash whole truck just shakes had it to the Ford dealer had to put a new cat converter on my warranty didn't cover any of it I said this is Ford screwup why don't they have a recall ended costing my $800 not to impressed Ford motors also intercooler was full of ice and water.

- Drake, ND, USA

problem #78

Feb 142014


  • 87,200 miles
As I was trying to pass a car the whole pickup started to shake, misfire, no power, was the first time I've had this happen what is the deal Ford.

- Drake, ND, USA

problem #77

May 012012

F-150 6-cyl

  • 39,250 miles


Truck started to shake violently when accelerating. Felt as if the wheels were loose or the U joint for the drive shaft was going bad. Had to let off the gas. Has been ongoing from the time I purchased the vehicle to present time.

- Cottage Grove, MN, USA

problem #76

Dec 302013

F-150 6-cyl

  • 39,000 miles
While driving at 55mph attempted to pass a vehicle on a two lane highway. Accelerated hard to pass and heard a loud metal on metal sound and lost power briefly. I was unable to replicate the initial incident, but now the truck randomly misfires and shutters under hard acceleration. Sometimes the check engine light will illuminate other times it does not. Dealer has been able to replicate the misfire but claims they can do nothing more. This is a safety issue because when power is needed most it is unreliable. I have escalated the matter to the corporate level at Ford but have not heard anything back yet.

- Lantana, TX, USA

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, 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

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