definitely annoying
Crashes / Fires:
0 / 2
Injuries / Deaths:
0 / 0
Average Mileage:
21,905 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 engine problems

engine problem

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2011 Ford F-150 Owner Comments (Page 1 of 2)

problem #28

Sep 062015


  • 60,000 miles


The contact owns a 2011 Ford F-150. The contact stated that while driving at approximately 60 mph, there was black smoke coming from the exhaust. The check engine warning light illuminated and the vehicle started shaking. The vehicle was taken to the dealer where it was diagnosed that the inter cooler needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of failure. The approximate failure mileage was 60,000.

- Campbellsport, WI, USA

problem #27

Nov 012013


  • 28,000 miles
The contact owns a 2011 Ford F-150. The contacts stated that the vehicle consumed excessive amounts of oil. The vehicle was taken to a dealer, who performed an oil change and recommended returning for a follow up after 1,000 miles. The vehicle was taken back after 1,000 miles where the dealer informed that the vehicle consumed 1.5 quarts of oil. The technician stated that the vehicle was functioning as designed. The manufacturer was made aware of the failure. The failure mileage was 28,000.

- Pharr, TX, USA

problem #26

Mar 012012

F-150 4WD 6-cyl

  • 21,110 miles
My vehicle is equipped with the 3.5 liter ecoboost 6 cylinder engine. Upon attempting to pass a vehicle while traveling at freeway speeds, the vehicle began to hesitate and the engine felt rough. The vehicle refused to accelerate, causing me to swerve back into the right lane to avoid being rear-ended by a vehicle traveling in the left lane. After approximately 30 - 60 seconds, the vehicle would accept throttle and resume normal operation. This problem has repeated itself on multiple occasions and my vehicle is currently at the dealership for the 7th time to remedy this problem. In only one instance of the many that I've had, I did get a check engine light on. Fortunately, this was documented by the Ford dealership as one entire bank of cylinders misfiring. Additionally, I have been complaining of transmission shift issues, where at slow (less than 10 mph) speeds, the transmission often 'hunts' between two gears and once selected, a loud noise emanates from under the vehicle and causes the vehicle to noticeably jerk I only learned of NHTSA PE13018 on 1/28/15. The first incident yielded installation of the deflector in the vicinity of the charge air cooler. Another incident yielded a tsb to remove the deflector, and most recently another tsb to re-install said air deflector. In every instance of this problem, I've had to execute emergency maneuvers to avoid traffic accidents. The service manager at my local Ford dealership has commented that Ford engineering has no clue how to remedy this issue. My vehicle currently has approximately 75,000 miles on it and is covered under Ford's extended warranty.

- Carrollton, GA, USA

problem #25

Dec 162013


  • 40,000 miles


The contact owns a 2011 Ford F-150. While driving various speeds, the vehicle would shake violently and fail to accelerate. The check engine indicator illuminated and the vehicle stalled. The dealer stated that the air deflector plate failed. The vehicle was repaired, but the failures recurred. The manufacturer was notified. The failure mileage was 40,000.

- Berthoud, CO, USA

problem #24

Feb 102014

F-150 6-cyl

  • 39,000 miles
We were driving in normal conditions, going about 40 mph, all of a sudden we lost power/acceleration and truck jerked, and brakes seemed to applied by their selves very hard. This seemed to happen sporadically until about a week ago. Its happening now at least 3 times a week. The truck is driven everyday on the interstate and my husband is very concerned that he is going to cause an accident. It happened yesterday and he said it was so bad, when the loss of power happened, the brakes locked so bad the tires just screeched. He took truck to the dealership on 3/4/14 and they could not find anything wrong with the truck. On the way home from the dealership (same day) it happened again. After the dealership told him that, I began searching on the internet and found the loss of power/brake problem. (moisture in cooler causing loss of power problem in F-150 echboost engines) he called the dealership back and he told them about the info on the internet that we had found, and that if had happened again that same day, they told him they were aware of the echboost problem, but can't do anything about it until a recall happens, so they did nothing to the truck.this is definitely a problem and it is going to cause a collision and possible death or injury when this happens. There definitely needs to be a recall on the F-150 ecoboost trucks. Please help everyone that owns this vehicle and issue a recall.

- Hueytown, AL, USA

problem #23

Apr 242012


  • 8,500 miles
Driving at highway speed (apx. 70 mph) attempt to pass a slower vehicle, and upon acceleration, the truck lost all power, and would not speed up. The check engine light came on, and stayed on until the truck had been turned off and restarted. I have experienced this problem on numerous occasions, and it always seems to occur in the rain, or high humidity days. I have narrowly avoided an accident on 3 occasion. The dealership where I purchased the vehicle has told me to use "fuel additive" every time I complain, stating the problem is water in the ethanol that is blended with gasoline in Texas. I recently learned about this problem having a fix, through the web, and I am now told "there is a fix, but it not a warratny situation"

- Waco, TX, USA

problem #22

Sep 082013


  • 55,000 miles


Towing a 9500# fifth wheel trailer on interstate complete loss of power shuddering and inability to accelerate.

- Lynchburg, VA, USA

problem #21

Jul 162013

F-150 6-cyl

  • 57,132 miles
2011 F150 ecoboost at 57K miles mid July 2013 experienced violent shuddering lose of power pulling up hill at 60 mph. Engine light came on. Taken to dealership where repair was listed as #2 coil pack costed $277. Now Jan 2014 six months and 13K miles later same event. Check engine light came on twice while driving to work. Used on board diagnosic tool I had purchased and truck coded P0303 as #3 cylinder misfire obviously the #3 coil pack has gone bad at 70K miles.

- Maggie Valley, NC, USA

problem #20

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 #19

Jul 022013

F-150 6-cyl

  • 65,850 miles
As described in NHTSA action number PE13018- hard acceleration and the engine misfired while trying to pass a vehicle on a highway.

- Fair Oaks Ranch, TX, USA

problem #18

Apr 192013

F-150 4WD 6-cyl

  • 92,500 miles


While accelerating from the ez-pass lane at a NJ toll plaza, with no warning, the truck experienced a violent shudder and complete stall (engine power loss). Although the power did come back up within 3 seconds, it was very frightening and I felt my family was in danger with vehicles coming up behind us quickly. Luckily, we were able to get off the highway.

- Northfield, NH, USA

problem #17

Jun 152011

F-150 4WD 6-cyl

  • 600 miles
Truck lost power while entering I 75 under hard acceleration. This has happened eight different times. Truck has a miss in the engine. This causes a drop of 5 miles per gallon.

- Gainesville, FL, USA

problem #16

May 182012

F-150 6-cyl

  • 2,000 miles
Loss of power during acceleration with ecoboost engine. I have been complaining to the Ford dealerships about this since right after I bought the truck. Thank you for putting this problem in the media as I am now hopeful for a resolution. I called the Ford dealership this morning and they said they knew nothing about it and to contact Ford. Here we go again with no one in Ford service departments wanting to acknowledge and resolve the problem.......

- Angleton, TX, USA

problem #15

Jan 182012

F-150 6-cyl

  • 3,500 miles
While driving at a constant speed you could not increase in speed. The engine would only shutter until I stopped and restarted the engine. This happened a number of times, at three different time it put me in danger while in heavy traffic. It would not allow me to increase speed to get out of danger only come to a complete stop at the side off a busy interstate. I found a service bulletin from Ford and they installed the new vain in the turbo. This helped the problem but it really hurt the fuel mileage after that.

- Schertz, TX, USA

problem #14

Apr 182013

F-150 6-cyl

  • 63,000 miles
Accelerating onto freeway vehicle miss fired and started to sputter and shake uncontrollably engine light started flashing, pulled vehicle over turned it off and waited 5 minutes to check manual. Restarted and no problems. Few days later started to pass a vehicle on incline and the vehicle did the exact same thing again. Repeated turn off and rest continued drive no problems. This is a safety issue while driving due to the massive shaking and lack of vehicle power to move with traffic. Took to dealer and they could replicate incident, however can't seem to diagnose problem. This should be brought to the attention of Ford Motor Co. Before someone gets killed in traffic accident due to loss of vehicle power.3.5L ecoboost FX4 F150 crewcab.

- Dinuba, CA, USA

problem #13

Dec 082011

F-150 6-cyl

  • 7,510 miles
While traveling at 40 mph, I accelerated to enter a highway, the engine accelerated and then bogged going into what is called "limp mode". the engine began to shake and misfire causing my vehicle to decelerate rapidly. This action nearly caused a rear end collision with oncoming traffic. On March 26, 2012 I was traveling at 65 mph on interstate 95 when I attempted to accelerate to pass another vehicle. The engine immediately began bog and misfire causing the vehicle to decelerate rapidly. Again, nearly causing a rear end collision. The vehicle has been taken back to Ford for a diagnosis, Ford engineers are apparently aware of this problem.

- Abingdon, MD, USA

problem #12

Sep 062011


  • 10,000 miles
Vehicle bogs while moderately accelerating onto the interstate while pulling a trailer with a load under 3,000 pounds. It seems as if the engine is stuck on the rev limiter. There is minimal power available and it is very dangerous. I did not buy a powerful truck in order to experience this.

- Groveland, FL, USA

problem #11

Mar 182012


  • 500 miles
I have a 2011 F150 with the 3.5 ecoboost. I have had numerous rough 3-4 upshifts since the truck was new. Brought the truck to dealer twice and was told they could not duplicate the rough shift. I have also had the engine stumble on me twice will trying to pass. I have read others are having similar problems and am hoping Ford will have a fix before someone gets killed in a wreck.

- Lake Charles , LA, USA

problem #10

Sep 072011

F-150 6-cyl

  • 1,953 miles
Driving on the interstate at 75 mph. I attempted to pass a car by giving the truck wide open throttle. The truck responded by down shifting several gears, and the RPM's increase to around 4000. Once this happens, the engine starts to bog down/misfire and the truck will not accelerate. The check engine light starts to flash. I let off the gas and the truck continues to misfire for several more minutes before clearing up on its own. This has happened on 4 or 5 different occasions.

- Mobile, AL, USA

problem #9

Feb 262011

F-150 6-cyl

  • 500 miles
Vehicle lost power and shook violently during highway on ramp acceleration. This has occurred multiple times and placed me and my family in the direct path of oncoming traffic with no ability to accelerate.

- West Sacramento, CA, USA

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