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really awful
Crashes / Fires:
3 / 3
Injuries / Deaths:
0 / 0
Average Mileage:
21,665 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.

2012 Ford F-150 engine problems

engine problem

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2012 Ford F-150 Owner Comments (Page 13 of 17)

« Read the previous 20 complaints

problem #82

May 272013

F-150 6-cyl

  • 9,200 miles


Pulled out to pass and the vehicle lost all power and started to shake and shutter could not complete pass vehicle stalled had to pull over to side of road but restarted and check engine light was on. My dealer said they never heard of this before. Dealer took code from truck it showed a miss fire cylinder 6 light is off now. I think it is a big safety concern.

- Waterloo, IA, USA

problem #81

May 222013

F-150 6-cyl

  • 5,700 miles
While driving my 2012 F 150 with under 5000 miles on it at highway speeds I went to pass a truck and put the accelerator down to the floor. The truck down shifted and the RPM's went up. When this accrued the truck feel flat on its face. There was no acceleration what's so ever and the truck seemed to miss. I held it to the floor for about 5 seconds with no change. Please feel free to contact me on this issue.

- Lakeville, MN, USA

problem #80

Mar 232013

F-150 6-cyl

  • 8,000 miles
V6 ecoboost my family and I were traveling in heavy rain on I65 in birmingham, al. I pulled into the far left lane to pass slower vehicles. When I accelerated the truck began to shake violently and rapidly lose speed and power. Several vehicles including a semi had to take evasive action to avoid a collision. The second time was on my return trip home. We were traveling on a two lane road in foggy conditions. We came to an area when the road split so you could pass slower vehicles. I, along with a car following, went to pass a slower vehicle which had moved to the right. When I was alongside the slower vehicle my truck began to shake and lose speed. I had to take evasive braking action to fall in behind the vehicle to my right because they were running out of room. The vehicle following me also had to take evasive action to avoid hitting me. And the car to my right. I took the truck to the dealer when I returned home. They replaced the cac, installed a plastic shield, reprogrammed the computer, and replaced a defective cat as was the recommended repair according to the issued tsb. On April 18th I was traveling on hwy41 in the rain.twice on my trip the vehicle began to shake and lose speed when passing slower vehicles. The applied tsb did not fix the problem. I returned the vehicle to the dealership at the request of Ford customer care. They were unable to find an issue. The day the vehicle was returned the second cat went out and had to be replaced. Ford has acknowledged the issue but has informed me that there is nothing they can do at this time. They offered to send me a buy back offer within ten days and after twenty days and several phone calls today they informed me that they are unable to buy back my truck. They also told me that I would have to live with the issue until they (if) come up with a fix. I am unwilling to put my family at risk.

- Evansville, IN, USA

problem #79

Jul 092012

F-150 6-cyl

  • 16,125 miles


I was about to enter highway from ramp, tried to accelerate engine started missing, loss of power had to pull over to side of road and try again, was almost hit from rear. Conditions, rain.

- Marble Hill, MO, USA

problem #78

Oct 212012


  • 3,500 miles
I have experienced two separate occurrences where the truck would violently lose power during acceleration during rainstorms. The first time the check engine light flashed but went away. The dealer told me it was probably the traction control, since no check engine light was logged in the system. The second time was April 24th, 2013, and the truck had approximately 11,000 miles. I was traveling approximately 70mph and passing two 18 wheelers on the interstate during a heavy rainstorm and the truck began to misfire and stutter and had no power. I had to swerve between the semis and coast to a stop on the shoulder to narrowly avoid a potentially fatal crash due to the loss in power. The check engine light stayed on this time, so when I took it to the dealer I specifically asked about the turbo intercooler issues that the ecoboosts have been reported to have. After checking my truck out, they indicated that my problem was consistent with the interrcooler condensation issue, but that my truck was built with the newer updated intercooler and that there is currently no fix for the problem. Now I am the disappointed owner of a new truck that I'm afraid to drive in the rain because my family might be killed or injured in it. The truck was purchased and always serviced at premier Ford in columbus, ms.

- Starkville, MS, USA

problem #77

Jan 152013

F-150 6-cyl

  • 500 miles
While driving during a light rain, I started to pass a slower moving vehicle. When I accelerated to pass, the engine stalled to idle speed, causing me to have to abort the pass and pull back in behind the vehicle.

- Perry, GA, USA

problem #76

Nov 212012

F-150 6-cyl

  • 5,280 miles


Vehicle lost power while passing another vehicle. Unable to complete passing maneuver. This is a safety issue that needs to be addressed.

- Houston, TX, USA

problem #75

Apr 132013

F-150 6-cyl

  • 4,000 miles
As I went to pass slow moving vehicles in a brand new F-150 ecoboost with 4,000 miles on it completely lost power twice within 30 minutes and shut down for about 20 seconds. Once I was slowed to about 15 mph on a busy street it went back to normal and the accelerator starting working again.

- Fayetteville, AR, USA

problem #74

May 262013

F-150 6-cyl

  • 21,300 miles
Traveling at 60 + / - mph and attempted to pass another vehicle under normal conditions. Engine lost power on acceleration and seemed to sputter. This is strange as the gas was not "punched" or anything outside of normal passing acceleration. Initially I thought I may be out of gas or something but this was not the case. I have noted power loss two other times but did not think anything of it as the engine returned to normal once I backed off the gas. The one difference this time is the engine made a very rough vibration which caused others in the truck to ask if I was having engine trouble.

- Richmond, TX, USA

problem #73

May 272013

F-150 6-cyl

  • 16,100 miles
Upon entering the entrance ramp to a highway the engine experienced a complete loss of power around 35 mph. All attempts to increase acceleration were futile and the engine went into "limp mode" and would not respond to any input. After 30 seconds of unsuccessfully attempting to accelerate I turned on my hazard signal and began to move toward the shoulder to avoid causing a dangerous situation. The vehicle then suddenly began to respond and accelerated normally back onto the highway.

- Columbia, MO, USA

problem #72

Feb 132013

F-150 6-cyl

  • 17,706 miles


While driving down the highway, vehicle will go into "limp" mode. Power reduces on vehicle and will not allow to maintain highway speeds. This has happened many times during a trip especially in humid and cold conditions. The scariest situation has been while towing a trailer. Truck went into the reduced power limp mode and was almost run into by a semi truck. I have had the truck into the dealership several times with attempts to repair. They have replaced a few engine sensors that they claim were causing issues, but the truck still had issue during colder weather.

- Warren, MI, USA

problem #71

Dec 192012

F-150 6-cyl

  • 13,000 miles
Intermittent stumble/misfire on acceleration from highway speeds, engine feels like it is in limp mode, this has happened four times.

- Bridge City, TX, USA

problem #70

Dec 042012

F-150 6-cyl

  • 20,000 miles
While driving at highway speeds and attempting to pass a slower car, the truck lost 50% of its power. It began to miss fire, and act like it had bad gas or something. I also started to notice that if you turn a corner on wet pavement and you lose traction, the truck made the same gurgling sound with power loss. This has happened several times. I have also noticed that I get very bad gas mileage averaging 12 mpg on the highway. I took the truck in and they reprogrammed it. I think all this did was cut back the power to help prevent detonation or miss fires. After this the truck was a complete dog. Bad mileage and no power. I recently sent the truck back and they replaced some parts with the intercooler. It isn't 100% fixed but it is better. Mileage picked up to 15 mpg but nowhere near what they claim. Power is better but still not good. Very disappointed overall.

- Houston, TX, USA

problem #69

Dec 152012

F-150 6-cyl

  • 12,000 miles
Engine stalled during hard acceleration. It had been sitting idling to warm up on a cold morning. When pulling onto the highway and accelerating to move into traffic, the engine stuttered and stalled. Had to pull over out of traffic.

- Madison, MS, USA

problem #68

Nov 022012

F-150 6-cyl

  • 1,000 miles
Pulling on the highway and accelerating the truck seems to hesitate when you need the power. This particular day was humid but it happens sometimes in clear weather.

- Aledo, TX, USA

problem #67

Apr 122012

F-150 6-cyl

  • 300 miles
In a light rain I tried to pass a truck but when I pushed on the gas the engine stalled. I was lucky to get back in my driving lane. This has happened 4 times, three while attempting a pass. I am now reluctant to attempt a pass.

- Springfield, MO, USA

problem #66

Mar 042013

F-150 6-cyl

  • 16,000 miles
Incident 1. weather: Cloudy with some snow around 20 degrees.when accelerating on to interstate 70 in E. Illinois the engine stumbled and loss power. The on ramp had an uphill grade and when the vehicle hit 35-40 mph, it lost all power and sounded like it was struggling to get fuel. I was able to pull to the side of the road, put it in park. I tried to rev the engine in park but it would just stumble. I turned the engine off and waited a few minutes then restarted it and it and it seemed to work as expected. This has happened 3 times since March 4th with the last time being on May 9th. Incident 2. weather: Partly cloudy in the 30's., March 7th, same conditions as above engine stumbled and loss power accelerating on to interstate 376 in w. pa incident 3. weather: Nighttime, in the 60's. going around 30 mph flat road, speed changed to 55 mph tried to accelerate to the posted speed and again the engine stumbled and loss power. This time the dashboard lit up with a bunch of codes (didn't write them down) again turning the engine off and waiting a few minutes seemed to clear the condition. *note* due to a heavy work schedule and needing my vehicle I have not had a chance to get my vehicle into the dealer to have them look at it yet.

- Beaver, PA, USA

problem #65

Sep 132012

F-150 6-cyl

  • 1,835 miles
Loss of power while driving, ... this has happened several times and the dealership (joe machens Ford) denies any problem with truck. This has also happened to my son [xxx]2012 F-150 and he has been told there's nothing wrong also. Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Columbia , MO, USA

problem #64

Mar 142012

F-150 6-cyl

  • 10,000 miles
After driving all day in the rain, I went up a freeway on-ramp accelerating to merge with traffic. Engine started shaking badly, and lost almost all power. I moved to the right safety lane to get out of traffic. After about one minute the engine regained power, stopped shaking, and I was able to continue normally. I went online and discovered that many F150 ecoboost owners have the same problem but Ford refuses to acknowledge the issue, and does not offer a recall or standard fix. So I just avoid hard acceleration on rainy days and have not had the issue again. It is a dangerous problem though.

- Reedville, VA, USA

problem #63

Mar 092013


  • 12,500 miles
My wife and I were coming home going about 55 mph and I went to pass a slower car. As I pulled on the passing lane and went to pass the engine start to cut out the more I pushed on the accelator the slower the truck went. It has done this two more time. I'm fixing to take to Ford in a few weeks. This could be a safety problem the truck has the 3.5 eco engine.

- Pierre Part, LA, USA

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