really awful
Crashes / Fires:
4 / 3
Injuries / Deaths:
0 / 0
Average Mileage:
22,205 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 16 of 17)

« Read the previous 20 complaints

problem #30

Dec 152010


  • 3,000 miles


Pressed gas to pass a slower moving vehicle and it bogged and had a major loss of power. It was raining out and it felt as the truck sucked some water into the engine, research leads me to believe it was the cac, or intercooler.

- Durand, MI, USA

problem #29

Dec 212012

F-150 6-cyl

  • 8,000 miles
I pulled out to pass a slower vehicle on a two lane highway in a passing zone as accelerating my F150 loss power and began shaking. Luckily I was able to pull back into my lane before the oncoming car hit me head on. My F150 continued to shake a lose power, after a few moments of this it regained power and the shaking halted. My check engine light has remained on since this.I took the truck in to my dealer to check this out and was told it is a problem with the intercooler and they would order parts to repair. As of today (Feb, 20th 2013) I am still waiting for the parts to come in. I have spoken with Ford customer care and was informed the supposed parts are on a back order. The loss of power and shaking has happened a few more times since, also my remote start does not work due to the check engine light being on. My fuel mileage has dropped from 18.7 to 14 mpg. I do not feel safe driving this vehicle, as you never know when it is going to lose power.

- Evans, WV, USA

problem #28

Dec 132012

F-150 6-cyl

  • 13,132 miles
It was a foggy, moist day and when I accelerated to get around a slow moving vehicle I was in the passing lane! my truck lost all engine power and had no throttle response for 15 seconds, no check engine light came on, my truck went into limpmode. Thankfully no one was behind me and I was not injured or involved in a crash!!!

- Herculaneum, MO, USA

problem #27

Jan 252013


  • 4,000 miles


The contact owns 2012 Ford F-150. The contact stated that while driving at various speeds, the vehicle stalled and the check engine lamp illuminated. The vehicle was taken to the dealer. The technician was unable to diagnose the failure. The manufacturer was made aware of the failure but did not offer any assistance. The vehicle was not repaired. The failure mileage was 4,000 and the current mileage was 4,090.

- Rockaway Beach , OR, USA

problem #26

Feb 052013

F-150 6-cyl

  • 6,201 miles
Accelerating from freeway on ramp at about 25 mph, slowly pushing pedal down truck tachometer gauge speed up to between 5500 RPM and 7000 RPM. However truck did not move. Transmission acted like it was in neutral. This lasted 4 or 5 seconds; then engine started missing and running rough. All the time vehicle had slowed to approximately 15 mph. I narrowly avoided being rearended by pulling off the shoulder of the highway. This happen on I-20 near the rest area West bound in monahans Texas. Weather was clear, and temp about 42 degrees. Has happened at least three times since then. Fuel was from national vendor and same brand I normally use. Dealer is oblivious to this and what to do.

- Strawn, TX, USA

problem #25

Jan 292013


  • 17,000 miles
Driving on highway, began to pass a semi truck. Engine began to shake and shudder and then power loss. Had to make sudden brake to avoid head on collision with oncoming car. Engine light is on and Ford has told me that they did not have an immediate fix to the problem. Have since been told that there is a moisture problem in the turbo coolers. They do not have parts to fix and do not have a fix date. They told me to keep driving the truck but I am afraid that the motor will cut out and cause a crash that could be fatal. The dealership wont give me another truck to drive in the mean time. I do not have extra vehicles to leave it parked until they find a fix. I am fearful of driving the truck as it is and Ford cant fix it.

- Spokane, WA, USA

problem #24

Dec 172012

F-150 6-cyl

  • 800 miles


While passing a vehicle my Ford F150 began to shudder dramatically, lost power immediately, causing me to pull to the side of the road. It was raining at the time. This could have definitely caused an accident. The service engine light came on and stayed on. I took it to the dealer and they stated it was a failure of the intercooler for turbo on the ecoboost engine. A replacement part has been ordered but Ford states, that due to the massive amount of calls for this part, it would be about 3 months to replace the part. This is definitely an accident waiting to happen, as they told me this could occur again. I have found numerous reports of this happening on other eco boost engines.

- Camano Island, WA, USA

problem #23

Feb 172012

F-150 6-cyl

  • 14,890 miles
This is my second complaint I am not sure to list this under engine or steering either way I am experiencing the same shaking and shuddering that I was before. Ford fixed the so called intercooler problem but now it is experiencing the same shaking. In the past 2 weeks this has occurred multiple times when I first start out driving in the morning the vehicle begins to shake and shudder while driving at sow speeds of less than 45 mph it even did this yesterday at 5 mph. If you research this complaint there are 1000S F complaints online especially on the Ford F150 forum. Also my gas mileage is absolutely horrible at 13 to 14 mpg and that's on 45 and 55 mph roads in the country. The shaking occurs violently making the vehicle hard to control creating a dangerous situation especially on the freeway where the vehicle will slow down to 35 mph.

- Chardon, OH, USA

problem #22

Jul 092012


  • 400 miles
Upon receiving vehicle from dealership in July 2012, ecoboost hesitates, then it takes off and goes faster than you want the vehicle to.this happened many times to pass vehicles or speed up to enter highway from on ramp. After starting and letting sit for more than 10 min., putting in drive or reverse, vehicle runs at high RPM & takes off on its own.upon stopping at light/ stop sign, vehicle will lunge forward.upon trying out ecoboost on vehicle one night, the engine would not disengage from ecoboost, pressed brakes, & wouldn't stop, ended up taking down a partial fence and ending up in a ditch.truck wouldn't get out of ditch, every time you pressed on gas to try to get out, even in 4X4, ecoboost kicks in & spins wheels.truck towed and damage fixed at dealership bought from.they repaired truck per my auto insurance coverage, but when asked to check brakes, ecoboost, they couldn't find any errors per computer and engine is performing correctly. But, engine is not as we have gone back with truck many times to complain about these issues and get the same answers.a computer is only as good as what humans put into it.there is an aftermarket computer chip available at expense of truck owner that will correct the hesitation when going into ecoboost, but nothing to fix the problem of the truck disengaging immediately from ecoboost when brakes are pressed. Ford should have put computer chip in engine before selling the vehicle and making sure the ecoboost disengages immediately upon braking. Also, exhaust fumes enter the cab when you put heat, defrost, A/C on. The recirculate button has to be on all the time to keep vehicle exhaust out of the cab interior. But, the dealership cannot find an answer for this problem either. Ford dealership or Ford doesn't seem to be concerned w/ these problem.read on-line that many F150 ecoboost trucks built from 2/2012 to 5/2012 have problems.

- Depew, NY, USA

problem #21

Jan 042013

F-150 6-cyl

  • 14,500 miles
While entering the highway from the ramp I pulled into the first lane and tried to accelerate. The truck started to miss and buck and would not increase in speed causing me to pull off the roadway. I shut the truck off and restarted it. The truck will only run if you accelerate very slowly. Any attempt to gain speed is met with the same response. I took the vehicle to the Ford dealer where they cleared the codes and informed me Ford was having problems with water in the intercooler. At this time they have no parts to repair this problem and told me to drive the vehicle as it is. My fear is someone could get killed. The vehicle is not safe to drive. If Ford knows there is a problem and can't fix it wouldn't they be responsible.

- Richmond Hill , GA, USA

problem #20

Dec 172012

F-150 6-cyl

  • 8,800 miles


On a 500 mile trip from va to nyc during rainy weather, engine stalled upon acceleration on 6 occasions. Reproducible after driving at constant speed for an hour, or so, and then accelerating to pass a vehicle or enter a freeway. Absolutely scary and extremely dangerous. I had several such incidences from day 1 of ownership and I already filed a similar report in July 2012 (#10465748). Never happens during dry weather. Ford applied the deflector shield and reprogramming, which did not solve the problem at all, but noticeably reduced the engine power, leading to shudder in 6th gear when going uphill at 60 mph (apparently due to a lack of enough torque; shudder disappears when switching down to 5th gear). Gas mileage is down to 15-16 mpg at constant speed of 65 mph on highway, far from the advertised numbers. The check engine light came on during yesterdays nightmare stalling events and the truck goes back into the shop shortly. $55,000 truck that cannot be driven in bad weather - and every Ford dealer declines having "ever heard of the problem". seeing all the complaints in this database and on F150 forums, I think it is time for Ford to acknowledge the problem publicly and come up wit a fix vial recall.

- Hampstead, NH, USA

problem #19

Oct 052012


  • 10,250 miles
I was driving to work entering the freeway doing 55 I tried to accelerate the vehicle past a slower moving car and the vehicle began to shake violently and the truck lost power. Had I been in heavy traffic this would have certainly caused a serious collision as I was unable to control the vehicle and had to slow down to 30 mph on the freeway before I could slowly accelerate back up to speed. This has occurred multiple times since October especially after rain or even in the mornings when it has been a heavy frost overnight. Also my M.P.G is down to 11 to 13 M.P.G this is horrible especially this day and age in vehicle technology. I have brought my truck to the local dealer and of course they stated they were unaware of a problem. I had to show them multiple complaints from this website and off the Ford 150 forum. It has been 6 weeks and the part still is not in for my vehicle.

- Chardon , OH, USA

problem #18

Aug 302012

F-150 6-cyl

  • 8,500 miles
Traveled from benton, la to little rock ar. Was driving down two lane highway at 55 mph in the rain. Had to come to stop as a vehicle was turning left. Upon accelerating vehicle began to shake violently and would not accelerate past 15 mph. Was able to pull over to shoulder. Turned off vehicle and removed key. Restarted engine. Vehicle would only run approximately 20 mph. Drove to next town about 10 miles away. Stopped at gas station for approximately an hour. Since it was late in the evening we had to continue traveling. Truck then would run about 70 mph down the interstate, but any acceleration would cause the truck to hesitate, shake, and loose power. Only extremely easy acceleration would work. No down shifting possible. Truck was diagnosed at chenal Ford in little rock ar. Found to have water in the engine from entering the turbo charger air intake. Water apparently accumulates in the turbo charger in the rain. If hard acceleration occurs during the rain, water is pulled to the engine damaging the spark plugs and coil packs. This is a known issue with Ford as the have several service bulletins out. Unfortunately, the dealer in Louisiana has not been provided a correction from Ford. My understanding is that the turbo intake system has been redesigned for the 2013 model year. Ford at this time is not offering to replace the air intake. As such, I this vehicle is not safe in the rain. A car should not stall when accelerating.

- Benton, LA, USA

problem #17

Mar 152011

F-150 6-cyl

  • 3,000 miles
While attempting to merge into traffic pulling a trailer I pushed the gas pedal and the truck down shifted but would not accelerate. The truck will drop into 3rd gear and will not exceed 4000 RPM. This has occurred several times and has been in the shop 3 or 4 times. It has also happened without a trailer. On several occasions I have had to pull over and turn the truck off to get it to go. Sometimes I can just come off the pedal and press it again to correct. This is a dangerous issue that could cause an accident. The dealer has reprogrammed the truck several times and replaced the converters twice. I have asked Ford to buy back the truck but they have not responded yet. The truck is going back into the shop tomorrow and I am considering utilizing the lemon law.

- Forest Hill, LA, USA

problem #16

Nov 012012


  • 13,100 miles
2012 F150 ecoboost. Was cruising on the highway at 60-65 closing in on a slower moving bus. Pulled out to pass and gave it more throttle the vehicle did not accelerate even with throttle to the floor. Had to hit the brakes and pull back behind the bus to avoid a collision. After recovering the motor seemed to recover and allowed for acceleration again. This was the second time this has happened to us. Neither time did the computer register a fault code or check engine light. The first time we took it for the issue, Ford service could not do anything as no code was found and unable to recreate in test drive. At that time tsb 12-6-4 was out pertaining to this issue. After the second time, again there was no code or recreation but a new tsb 12-10-19 superseded the previous tsb and allowed for repairs. This is a dangerous condition that Ford is aware of and could possibly affect all 2011-2012 F150 ecoboost motors and some early 2013 models. The charge air cooler as originally designed is creating condensation that causes these power loss events. The corrective actions in tsb 12-10-19, if successful, should be applied to all F150 ecoboost vehicles built with the older intercooler design.

- Glendive, MT, USA

problem #15

Sep 112012


  • 3,800 miles
2012 Ford F150 with ecoboost - driving back to NY from Maine - hit rain in Vermont - tried to pass a vehicle on highway - truck lost power - bogged down - stuttering along. Had to quickly pull over to slow lane to avoid having accident with vehicles coming up from behind - very dangerous situation. My daughter has the same truck she had same problem in July. In researching online have found this is a common occurrence with the ecoboost. Dealer was unaware that there have been any issues with this engine. My daughter found on Ford forums and this site that Ford issued the tsb 12-6-4 that is suppose to fix this problem. The dealer placed the shield on the intercooler and reset the computer - time will tell if this will work before someone gets killed.

- Frankfort, NY, USA

problem #14

Jul 292010

F-150 6-cyl

  • 2,500 miles
2012 Ford F150 with ecoboost mileage 2,500 - driving for approx. 2hrs on highway - raining off/on throughout drive - when accelerating to pass a vehicle going uphill the F150 lost power and bogged down - stuttering along - had to quickly pull over to slow lane - to avoid possible accident with traffic that was approaching in fast lane. The truck continued to stutter along at various times after the 3 hr trip. No problems since but truck has not been used much (3,600 miles now). Saw on other forums and this site that other F150's with ecoboost are having this issue. Took truck to dealer - they had not heard of any problems with the ecoboost. I showed them the printout from this site highlighting the tsb 12-6-4, which they are going to do. My father purchased the same truck and he had the same thing happen to him this September. Hope this works before someone gets hurt or killed.

- Ilion , NY, USA

problem #13

Oct 092012

F-150 6-cyl

  • 5,000 miles
Was driving at 60mph, accelerated a little and vehicle shuddered/hesitated and didn't accelerate, and check engine light flashed, then became solid. Took to Ford dealership was told a calibration update fixed the problem. Same problem occurred 3 days later. Took it back to dealership, it has been there for 3 days and they state "are waiting for Ford to advise them on what to do next." This is a 2012 Ford F150 ecoboost lariat 4X4 supercrew with only 5,000 miles on it and has a sticker of nearly $50,000. I would expect no problems or at least a timely solution. Either way, merging onto the interstate or needing to accelerate and the truck failing to do so is a safety issue.

- Little Rock, AR, USA

problem #12

Aug 152012


  • 60 miles
The contact owns a 2012 Ford F150. The contact stated that the air bags failed and whenever the front passenger seat was occupied, the air bag warning light illuminated on the instrument panel. The contact also stated that the eco boost caused the engine to stall. The vehicle was taken to the dealer for inspection where they stated that the seat rail needed to be replaced and that the eco boost was working extremely well. The dealer reprogrammed the computer but the failure recurred. The manufacturer was notified but provided no assistance. The failure mileage was 60.

- Shorewood, IL, USA

problem #11

Sep 292012


  • 768 miles
The contact owns a 2012 Ford F150. The contact stated that while driving 70 mph in rain weather, the vehicle stalled with the illumination of the check engine warning light. The contact moved the vehicle to the shoulder because it had engaged into limp mode. The contact was able to regain speed once he drove away from the shoulder. The contact stated that the failure recurred whenever it rained. The vehicle was taken to the dealer for inspection where they advised that there was water in the engine and the spark plugs had become damaged. The vehicle was not repaired. The manufacturer was notified and stated that they were aware of the problem and that they were working on a remedy. The failure mileage was 768. The VIN was unavailable.

- College Station, TX, USA

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