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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 12 of 17)

« Read the previous 20 complaints

problem #102

May 312013

F-150 6-cyl

  • 13,000 miles


The contact owns a 2012 Ford F-150. The contact stated that while driving approximately 55 mph, he depressed the accelerator pedal but the vehicle would not respond. The manufacturer was not made aware of the failure. The vehicle was not repaired. The approximate failure mileage was 13,000.

- West Bend, WI, USA

problem #101

Oct 172012

F-150 6-cyl

  • 29,000 miles
I have all documentation of my ecoboost F-150 misfiring during acceleration, including a video. I also have the Ford reps name and dates of conversation with Ford and my dealership where the Ford rep "does not feel this issue presents a significant safety risk..." even though my truck failed to accelerate in the rain entering a highway in front of an eighteen wheeler, causing me to have to make an emergency move to the shoulder to avoid a wreck. This is one of three incidents.

- Allen, TX, USA

problem #100

May 072013

F-150 6-cyl

  • 20,500 miles
First incident happened after vehicle had been driven on highway for about 15 miles. At stop sign, upon acceleration, engine began to shudder going through gears. Pulled over, stopped engine, started and began shuddering again. Vehicle was towed to rockwall Ford, dealer in rockwall tx.. found loose connection (not the problem). Second incident: Vehicle began misfiring around highway speeds. After reading forums and doing research, found moisture problems with intercooler (cac). Rockwall Ford dealer replaced per Ford procedure: Replace cac and installed deflector shield for moisute at 20,170 miles. Third incident: Vehicle continues to shudder at highway speeds took to different Ford dealer (randal noe in terrell, tx). Dealer very helpful and found truck to misfire. Ford however has no resolution to this problem and still have no truck.

- Heath, TX, USA

problem #99

Dec 052012

F-150 6-cyl

  • 3,000 miles


The contact owns a 2012 Ford F-150. The contact stated that while driving 65 mph, the vehicle started to shake violently and engaged into safe limp mode. The contact mentioned that the failure recurred several times. The vehicle was taken to the dealer. The technician was unable to diagnose the failure. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 3,000 and the current mileage as 13,000.

- Gainesville , GA, USA

problem #98

Jul 292012

F-150 6-cyl

  • 2,500 miles
We experienced bucking, shuttering, lack of acceleration when exiting one major highway and entering another. Also check engine light came on. We called the dealer and they said we could still drive truck after we told them what happened. (we were about 200 miles from home)this happened twice. After the first time we took the truck back to the dealer and they installed a cl3Z*19E672 deflector and *W711281*S300 pin. The dealer said the reason for the problem was the computer "learns" the driving habits of the everyday driver (wife). When the husband drove the truck the incidents occurred. Dealer said they re-programmed the computer, installed parts. Several months later when husband was driving the truck it happened again. We took the truck back to the dealer but they said nothing was wrong.

- New Hope, PA, USA

problem #97

May 312013

F-150 6-cyl

  • 16,500 miles
2012 Ford F150xl with 3.5L V6 ecoboost engine. Accelerating to merge onto highway with cruise control off and after successfully merging, vehicle expectantly lunged forward while foot was off gas. Engine kept accelerating for period of 5 seconds reaching 90mph. I was hitting the brake the entire time with no effect until heard a dull clunk or pop sound coming from the engine compartment and behind the steering wheel. After this sound, the engine stopped accelerating and I was able to regain control. If there was a motorcycle or car in front of me I would have run them over.

- Kempner , TX, USA

problem #96

Dec 102011


  • 9,000 miles


I proceeded to pass another vehicle on I-75 just North of chattanooga, tn. The truck immediately lost power, check engine light came on, and I had to pull over to the emergency lane very quickly as the truck lost speed rapidly. I had to turn engine off and then back on to get power back. I took it to the Ford dealer I bought it from and they told me they had to replace a part. It has been on back order ever since and the truck has repeated this problem approximately 5 more times. The service dept was kind of vague about the problem but they just kept telling me it would not hurt the engine.

- Georgiana, AL, USA

problem #95

Oct 232012

F-150 6-cyl

  • 2,400 miles
While attempting to accelerate in interstate traffic, the engine bogged down to the point of having to pull over. The truck has been into the dealership on three separate occasions for this issue, and is currently in there, and has been for a week, with no end in sight!!!. the last time the hesitation happened very nearly resulted in a multiple car pile up behind me as I was attempting to merge onto an interstate ramp. I spoke to Ford customer service 1-800-392-3673 reference number [xxx] and spoke with "[xxx]" who denies that there is a problem, even though every single representative at Ford dealership and hq admit that there is a problem with the F150 ecoboost. They are refusing to consider this as a candidate for the Virginia lemon law, even though it qualifies completely. The dealer has no idea how to correct this issue, and has admitted so. They continue to mislead me and prolong the inevitable. Ford needs to step up to the plate and resolve this issue with their lifelong, and loyal customers. Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Moyock, NC, USA

problem #94

May 282013

F-150 6-cyl

  • 10,335 miles
While driving at approx. 70mph I attempted to accelerate hard to allow another vehicle to merge into traffic on southbound I-75. My vehicle immediately slowed down and began to shudder. I let off the accelerator and coasted until the shudder stopped. The steering wheel shook as if I had two flat front tires. The vehicle returned to normal after about 30 seconds and I completed my trip without further problems.

- Monroe, MI, USA

problem #93

Aug 222012

F-150 6-cyl

  • 4,000 miles
While driving on an interstate with two motorcycles in the bed of the trucks, the truck started to shake and vibrate. Have since seen this referred to as the shudder that sometimes precedes the limp mode which results in power failure. After changing lanes and monitoring tires on nearby vehicles in motion we confirmed it was not the road. I have since experienced it again but cannot recreate the behavior on demand and it seems to be only on long trips with a load in the truck.

- South Amboy, NJ, USA

problem #92

Feb 082013

F-150 6-cyl

  • 12,000 miles


While driving my 2012 F-150 ecoboost driving on the interstate- sped up to jump in front of somebody, the engine totally bogged down.... wouldn't accelerate at all... luckily didn't get ran over. This has happened 5 times since. I have talked to multiple people that have the ecoboost engine and it has happened to them.

- Flowery Branch, GA, USA

problem #91

Jun 202012

F-150 6-cyl

  • 4,000 miles
I have had problems with this truck since I bought it..power loss and running rough...its been in the shop 5 or 6 times now..they replaced 3 coils, ,3 spark plugs that were burned up and recently a turbo cooler..I tried to get them to replace all the coils but they said Ford would not do it and there was no service anouncement....I have since spent 2500 on a extended me this is something Ford should be concerned about but doesnt seem to be..

- Longview, TX, USA

problem #90

May 152012

F-150 6-cyl

  • 5 miles
The contact owns a 2012 Ford F-150 eco boost. The contact stated that the vehicle lost power while accelerating. The contact took the vehicle to the dealer twice but the failure could not be diagnosed. The failure mileage was 5 and the current mileage was 16,000.

- Laquinta, CA, USA

problem #89

Apr 092013


  • 9,000 miles
Truck stumbles and stutters at 62 mph and around 1400 RPM when attempting to accelerate. Ford dealership replaced cac and upgraded software, this helped the problem but did not fix the problem. I reported back to the dealer about the continued problem and there response was that I was feeling turbo lag and Ford Corp does not currently have a fix, check back in a few months.

- Crofton, MD, USA

problem #88

Jul 112012


  • 2,000 miles
The contact owns a 2012 Ford F-150. The contact stated that while driving 65 mph, the engine experienced a brief loss of power without warning, then resumed normally. The failure recurred five times. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the problem. The approximate failure mileage was 2,000.

- Chillicothe, OH, USA

problem #87

Mar 232012

F-150 6-cyl

  • 21,561 miles
Needed to accelerate and when throttle was applied the engine shuttered and lost all power until I pulled over to the shoulder and turned off and restarted truck. Then ran fine. It has done this three times under same type of conditions. Very dangerous.

- Houston, TX, USA

problem #86

Apr 102013

F-150 6-cyl

  • 10,000 miles
The contact owns a 2012 Ford F-150. The contact stated that while driving approximately 30 mph, the vehicle shook violently and lost acceleration power. The contact also mentioned that the check engine warning light was illuminated. 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 10,000 and current mileage was 12,400.

- Decatur, IL, USA

problem #85

Jun 072012

F-150 6-cyl

  • 405 miles
Ford F150 crew cab - lariat - V6 ecoboost engine. Problem occurs when not towing, not engaged in 4X4 mode and occurs randomly in wet, damp and dry conditions. Driving at highway speeds (60) on a 70 mph highway, tried to accelerate to pass semi truck and truck shuddered and would not accelerate at all. Speed dropped dramatically and we were almost hit from behind. Only method of getting truck moving was to stop on the side of the highway and let the truck sit, turned off for 2 - 3 minutes. It took 5 or 6 of these stops to get to the nearest Ford dealership, where a tsb was referred to and it was suggested by the dealership that we continue on our vacation and stop in tallahassee to have a larger dealership take a look. The tallahassee crew updated the computer and provided a report for bill currie Ford in tampa, to install a shield of some sort once we returned, as they did not have the part in stock. Bill currie service reported that the shield was already in place when reported a few days later. The truck was taken to bill currie Ford a total of 5 times for the same problem with the final time to have a Ford tech do the work. The problem persists. Overall the truck is less than it was advertised. I got 18.7mpg with my previous 6.2L F150 and I have yet to get more than 17.8 on the ecoboost. Around town I also get much lower mileage (11.7mpg as opposed to 14.9 with the 6.2L engine. The shudder/loss of power occurs randomly and has resulted in near crashes at least 5 times in the months since we purchased the truck, all at highway speeds.

- Tampa, FL, USA

problem #84

May 092012

F-150 6-cyl

  • 6,824 miles
Experienced with my new 2012 Ford F150 ecoboost. While trying to rapidly accelerate to pass another slow vehicle, my vehicle lost power and began to shake violently almost creating an accident. After pulling to side of the road to allow other vehicles to pass vehicle seemed to idle correctly. Upon trying to resume travel vehicle missed and shook off and on for the next 5 mile or so. During this time the check engine light was flashing but was not in a safe place to pull over and stop. After traveling approximately 5 miles at around 15 to 20 mph check engine light went away and engine seemed to run correctly. Then slowly resumed 55 mph travel with no further incidents. Has happened several times since then but not as bad and didn't last as long.

- Port Royal, VA, USA

problem #83

Apr 042013

F-150 6-cyl

  • 11,500 miles
I had been driving in hard rain for about 3 hours pulling a 8000lb travel trailer. On a 3 lane interstate I pulled out to pass a slow vehicle in the rh lane. We were going up a slight hill. It started to shake, lost power, and slowed to about 30 mph. I was then in the center lane going too slow for the traffic with trucks passing me blowing their horns on both sides and the road slop from them making it hard to see. I stopped in a rest area and called the Ford help line who offered no advice other than to call a local dealer. I am from mi. And this happened in tn. Normally on a hill like this it would have gone to 65mph with no effort. The altitude was about 850', temp 45 deg, no check engine lights or codes, was in the tow haul mode, as I got to the rh side again it started to get better, took about 2 minutes. I was amazed I didn't get rear ended by a truck. It was a really scary situation and my wife is still hesitant about pulling a trailer with it. When I got home I took it to my dealer and they checked a lot of things and did some of the tsb's for this problem and couldn't find anything. They then put a flight recorder on it for about 3 weeks and got no codes. Now all I know is they don't know what is wrong and I'm not sure if it will ever be taken care of. They are very closed mouth about this issue. I'd really like to get some idea if they are working on it or if I'm stuck with it. It's a really nice truck if it doesn't kill us.

- Jackson, MI, USA

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