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 10 of 11)

« Read the previous 20 complaints

problem #35

Mar 052013


  • 15,000 miles


My Ford F150 eco boost lost power suddenly while trying to enter a rural route at a stop sign.while trying to accelerate it just died for several seconds and then took off since I was pushing on the accelerator wondering what had just happened.the vehicle has been shuddering a lot on acceleration now with a substantial loss of fuel economy. I have personally had it at two Ford dealership which say they can find no problem with it, but shop foreman told me and my wife we where stuck with it and to fix it by pulling the battery cable off every once in awhile.

- Rhoadesville, VA, USA

problem #34

Oct 202011

F-150 6-cyl

  • 1,572 miles
I was driving at highway speed, and accelerated rapidly to get out of the way of a merging car. The truck shook violently and lost power. I pulled to the side of the road and restarted the vehicle. There was no "check engine light" or any other indicator of a problem during the incident, or after restarting the truck. When I took it to the dealer, they indicated that they found nothing wrong with it. I have driven the truck since then wondering if it would happen again. Now I see that others are experiencing the same issue. Kistler Ford in toledo, Ohio will have a record of this service appointment on 10-21-11, as I have a copy of the service document stating the above. Although I have no way to prove it, the truck has also seemed to have less power since this incident.

- Swanton, OH, USA

problem #33

Oct 032012

F-150 8-cyl

  • 16,318 miles
Vehicle began shuddering heavy between 40mph and 50mph. Requiring me to depress the gas pedal heavy to avoid the shuddering, its almost impossible to drive my vehicle at 45 mph (which is the speed limit in most of the area I drive in). This occurrence is when 5th gear changing to 6th gear, which is typical between 45 mph. Not sure what damage this is doing to my vehicle, let alone the safety risk this may be causing. I have had the vehicle in the dealership at lease 6 times for this issue and with no results of the issue being resolved. Just the run around and false promises. 2011 F150 5.0 motor and 3.55 gear ratio.

- Miami, FL, USA

problem #32

Dec 252012

F-150 6-cyl

  • 24,000 miles


Vehicle shifts hard when not under power. When under power vehicle backfires, mis fires, loses acceleration completely. Have brought vehicle to deal 4 times and have been told there is nothing they can do. There is black sut on the exhaust. I do not feel safe driving in the vehicle if it cannot accelerate or will just completely shut off.

- Cooper City, FL, USA

problem #31

Aug 052011

F-150 6-cyl

  • 1,400 miles
Truck lost all fluid from transmission. Ford replace seal in transmission after sitting at dealer for nearly 3 weeks. Since that time, I have made multiple complaints to local dealer about engine stumble on hard acceleration. Dealer replaced air deflector per Ford service bulletin. Truck still stumbles on hard acceleration. (06/01/2013) current mileage 40,900.

- Ooltewah, TN, USA

problem #30

Nov 252011

F-150 8-cyl

  • 14,000 miles
The contact owns a 2011 Ford F-150. The contact stated that while shifting gears, the vehicle would violently lunge forward without warning. The vehicle was taken to the dealer where the failure was unable to be replicated. The manufacturer was made aware of the failure. The vehicle was not repaired. The approximate failure mileage was 14,000 and the current mileage was 40,000.

- Litchfield, IL, USA

problem #29

Sep 152011


  • 4,000 miles


The contact owned a 2011 Ford F-150. The contact stated that while driving approximately 35 mph, the vehicle hesitated to accelerate. The failure recurred intermittently at different speeds. The vehicle was towed to the dealer for diagnosis three different times. The technician was unable to diagnose the failure. Additionally, the contact stated that the fuel gauge would not display accurate fuel readings. The vehicle was taken to the dealer for diagnosis. The fuel sensor was replaced. The vehicle was not repaired. The VIN was not available. The approximate failure mileage was 4,000.

- Donalds, SC, USA

problem #28

May 262013


  • 48,000 miles
The contact owns a 2011 Ford F150. The contact stated that while driving 65 mph and attempting to change lanes, the vehicle lost acceleration power. The failure was experienced several times. The vehicle was not taken to the dealer to have a diagnostic performed. The manufacturer was not made aware of the failure. The failure and current mileage was 48,000.

- Milano , TX, USA

problem #27

Dec 212012

F-150 6-cyl

  • 15,406 miles
The contact owns a 2011 Ford F-150. The contact stated that whenever shifting from first to second or from third to fourth gear, the transmission shook violently. The vehicle was taken to the dealer where the technician was unable to determine a remedy the failure. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 15,406 and the current mileage was 21,500.

- Essex, MD, USA

problem #26

May 012013

F-150 6-cyl

  • 37,000 miles
An example of what happens is this: Traveling along at 45mph, and pull out to overtake a slower vehicle, you accelerate aggressively. Upon doing this, the truck seems to stumble like it's hunting for the appropriate gear (@ about 45- 50mph). Also, it feels like an engine mis-fire. It's a disconcerting feeling that the truck does not accelerate as it should when you need it the most.

- Hershey, PA, USA

problem #25

Jun 162012

F-150 6-cyl

  • 22,000 miles


Loss of power while attempting to pass on three separate occasions. In all occasions I had to pull over and turn the vehicle off, let sit for a few minutes and then restart the vehicle to continue.

- Wynne, AR, USA

problem #24

Jun 282012

F-150 6-cyl

  • 15,000 miles
After 4 hours of steady highway driving upon attempting to pass a vehicle the truck failed to downshift, lost power ( requiring me to abort maneuver) and began bucking... there was no cel. Took the car to the dealer and they inspected the truck found no codes and said no problem found. They said they reloaded the programming for the transmission. This vehicle has experienced this problem numerous times since the first occurrence. Always happens when accelerating and creates dangerous loss of power at critical driving periods.

- Columbia, MD, USA

problem #23

Jan 012012


  • 1,000 miles
The vehicle just doesn't accelerate without hesitating.

- Minot, ND, USA

problem #22

Oct 212011


  • 906 miles
I have a Ford 2011 FX4 ecoboost. Whole truck started shuddering as I was getting onto the southwest freeway. Check engine light was flashing and vehicle had loss of power. Was able to coast and drive slow to the next exit where I pulled into a gas station and turned the engine off. I started the truck again and it seemed ok but the shuddering happened again on the way home and this time the check engine light stayed on. Took it to the dealership where the code was pulled and they replaced the catalytic converter. Same thing happened to me (shuddering and loss of power) again at 30K miles 3/4/2013 where this time they replaced a ignition coil and spark plug. And a third time at 34K miles 4/27/2013 and it is back in the shop today. When this happens it is very dangerous driving on the freeway when you cannot get the truck to drive without shuddering and jerking anytime you give it gas. Something needs to be done before anyone gets hurt. The dealership so far has been fixing whatever the code states, however there is a underlying condition that is causing this to happen that needs to be addressed.

- Spring, TX, USA

problem #21

Feb 232012

F-150 6-cyl

  • 2,500 miles
I was driving along hwy 95 in Georgia for several hours early one morning. I went to pass a semi and lost all power. The truck rpms jumped up while the transmission down shifted to 4th gear but the truck did not accelerate. I had to get back into my lane in an abrupt way causing traffic to re-act and allow me back in. This has happened almost a dozen times since then. Ford has been issuing tsb for a fix but none of them work. This is only happening on the 3.5L eco-boost motor. They are now in their 3rd model year of this truck and are still having this problem, it is only a matter of time before someone gets seriously injured. The timing of when this happens is un-predictable and often leaves no codes for the dealer to troubleshoot, so you get sent on your way with "could not replicate problem". Ford has been claiming it is condensation in the inter-cooler, has issued computer updates numerous times, now they have released and upgraded inter-cooler, but the problems are still happening.

- Janesville, WI, USA

problem #20

Sep 292012

F-150 6-cyl

  • 12,500 miles
My truck is equipped with the ecoboost 3.5L engine. Twice now I have attempted to accelerate and had the truck lose power and shake violently, creating a very dangerous situation. The first time was attempting to pass another vehicle. Weather conditions were warm (75 degrees F) with light rain. I pulled out to pass and attempted to accelerate when the truck suddenly acted as if the gas was shut off. It then began to shake and shudder violently as if the rear axel was being ripped from beneath it. I was able to fall back behind the vehicle I was attempting to pass, out of the way of oncoming traffic, and pull to the side of the road. After shutting off and restarting the truck, it seemed to run normal. The dealership service tech inspected the truck and stated it is a problem Ford is aware of (in wet conditions), but has no fixes. The second time I was attempting to enter the interstate from a rest stop into a single lane construction zone. The weather was cool (45 degrees F), dry and sunny. I attempted to accelerate to enter the highway and the truck acted as it did on the first instance. I was forced to pull off of the lane between two large construction pylons in order to avoid being struck by a tractor/trailer. The supplied dates, mileage and speed were from the most recent incident.

- Marseilles, IL, USA

problem #19

Jun 092012

F-150 6-cyl

  • 15,000 miles
While traveling down I-55, towing my travel trailer on a trip from St. Louis, mo to gulf shores, al, vehicle experienced a total loss of power on the interstate. I had been driving multiple hours in the rain when in jackson, ms, I had to let off the gas to allow other vehicles to merge onto the highway. When I re-applied the gas, the vehicle started shaking violently and would not accelerate. This caused the vehicle to lose speed and drop from around 60mph to 35mph on the interstate. After letting off and re-applying gas about three times the vehicle finally recovered and I was able to continue on my way. Luckily the other drivers on the highway were able to avoid me and I was not rear-ended or otherwise caused a serious accident.

- Hillsboro, MO, USA

problem #18

Oct 062012

F-150 6-cyl

  • 1,000 miles
Traveling at speeds above 50 when hard acceleration vehicle goes into limp mode becomes very dangerous have almost caused major pile up due to loss of power and total loss of vehicle control this vehicle and others like it are going to start killing people. All over the internet people are complaining about same problem and so far Ford has not recalled these vehicles and that is very concerning. Please help before many people are killed.

- Tallahassee , FL, USA

problem #17

Aug 012012

F-150 8-cyl

  • 16,000 miles
Began to notice rough shifting a lower speeds (30 - 45) at about 12,000 miles. Over time it became more pronounced and feels like the engine is lugging at this speed. The transmission causes a shudder when shifting up or down as if the transmission is having a problem getting into gear. Left the truck at the dealer for 3 days and they told me they could not replicate the problem. I think the streets they were driving were so rough that they couldn't feel the shudder. I was told that it may be a problem the computer is having synchronizing the fuel system and the engine RPM's. don't know about that but the problem still exists at 20,000 miles now.

- Georgetown, TX, USA

problem #16

Aug 142012

F-150 6-cyl

  • 4,600 miles
Surging at low speeds when coming to a stop. Feels as though the transmission is not downshifting and requires hard braking to prevent vehicle from moving into an intersection, or a car stopped ahead going in the same direction. This has occurred twice. The second time I almost hit the car stopped in front of me.

- Stow, OH, USA

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