3.5 eco boost engine runs rough at times and when passing at highway speeds sometimes goes into "safe mode" and shuts down to idle when under full acceleration. Mileage is constantly going down, from 22mpg to 13mpg. Dealer says this is new to them.the dealer said they found tracks on the spark plugs and changed them, new plug wires were supposedly bad, replaced both turbos. Still no difference.I have a video of this happening with the eng check light coming on and after the dealer said there was no indication of this in obd2 memory.

- Tucson, AZ, USA

Upon driving after start up, the truck will experience a harsh up shift when shifting from 2nd to 3rd gear. The truck will lurch forward violently. After operating, the harsh up-shift will go away. I have brought the truck to the dealer, and they cannot determine what is causing the harsh shift.

- Glen Head, NY, USA

The contact owns a 2014 Ford F-150. The contact stated that while driving at a high speed, various warning indicators flickered and the vehicle coasted in reverse. The contact was able to coast the vehicle over to the side of the road. The vehicle was towed to a dealer who stated that the transmission needed to be replaced. The manufacturer was notified of the failure. The VIN was not available. The approximate failure mileage was 16,000.

- Madera, CA, USA

Acceleration lag in a rolling or standing start. Most noticeable when stopped with truck facing uphill or slowing to a near stop and then slowly accelerating (slowing for a stop light that turns green as you approach the intersection). Once acceleration kicks in, the vehicle jumps as if the transmission has dropped from neutral to being into gear at increased RPM's or the clutch has slipped. Gear indicator doesn't show vehicle had ever dropped into neutral. If acceleration rate is increased from stop or rolling start, problem does not seam to occur. Problem was noticed from beginning of ownership and has been intermittent ever since (truck was purchased new in March 2015). Have not taken to dealer for diagnosis as it is intermittent, but talked to a non-Ford mechanic that had heard of other people noticing acceleration lag.

- Mountain Home, AR, USA

The contact owns a 2014 Ford F-150. While attempting to accelerate from a stop light, the vehicle jerked and sounded as if it would stall. The vehicle suddenly accelerated and was taken to a local dealer, but no failures could be found. The manufacturer was made aware of the failure and referred the contact to NHTSA to file a complaint. The failure mileage was 14,000.

- Mustang, OK, USA

The contact owns a 2014 Ford F-150. While the vehicle was parked, it moved in reverse independently and damaged the driver side door and front fender. The failure occurred without warning. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The VIN was unknown. The failure mileage was 10,000.

- Hanover, MA, USA

At approximately 12,600 miles on my newly purchased vehicle, I experienced brake vibration, a hesitation and jerk in transmission at low accelerating speed or slowing down and then accelerating, and a loud whining noise from rear end between 60-65 miles per hour. I took it to river city Ford and they turned the rotors for the brakes. I told river city Ford that was unacceptable for a new vehicle and by turning the rotors they just reduced the life of the rotors for a new vehicle. I also told them that the brake pads should be replaced also. I contacted Ford Corp and they would not take any action and would not let me talk to anyone higher than a customer service supervisor. River city Ford has had my vehicle in the shop since 7/20/2015. They have tried shimming ring and pinion in rear end and it did not fix the problem. They have tried various things and has not fixed the problem. They claim that adding grease to the transmission supposedly fixed the jerking when accelerating. Ford Corp has wasted a lot of time trying to fix a known problem by Ford. My research shows the rear end issue has existed for years and many customers have experienced the problem. Brake vibration, transmission jerking, and loud humming from the rear end are all safety issues, that if a failure occurs, could result in an accident at high speed.

- Branchland, WV, USA

I have been having problems with the engine and brakes since I bought this truck. I have had it to the dealer numerous times and they throw parts at it and it does not fix it. At beginning of acceleration there is a dead spot in the throttle and when you push past it slightly you find the vehicle accelerates rapidly and sometimes spins the drive tires. A few days ago I was pulling out into a break in traffic that was more than adequate and the engine started O.K. then hesitated putting me in danger of being hit by now closely approaching traffic. When I bring the truck to the dealer they try their best to find the problem but can't.they said it was bad turbos and replaced them that did nothing to help, they also said the plug wire boots had tracks on them and the spark plugs were misfiring, all was replaced to no avail. Also when you are driving at city speeds and push the throttle to pass or accelerate in traffic there is a noticeable lag in depressing the throttle and the engine responding. This is also a dangerous problem.I brought the truck in for overly sensitive brakes and I was told by one service writer that the tech found fluid in the booster and another writer said it was assembly lube. They changed the booster but not the master cylinder.

- Tucson, AZ, USA

This has truck has a shudder or vibration from starting out from 1 to 10 miles an hour and additionally when passing and driving on the highway. There is also an acceleration delay at all speeds. This truck is equipped with the 3.5L eco boost engine. These issues are especially more noticeable when there is a load on the truck such as a topper and luggage, etc.

- Helena, MT, USA

As I accelerate, the truck seems to going into neutral for about three seconds. Then it reengages and jerks violently. I have taken the truck to the dealership twice. The first time, they reprogrammed it but didn't repair the issue. This last time, the technician told me to pick up M truck because they couldn't recreate the issue I was experiencing. Another technician stated it was the eco-boost but that Ford was side stepping the issue because they couldn't find how to fix it. This is a safety issue because last time this occurred, I was changing lanes on interstate 10 and almost caused an accident.

- El Paso, TX, USA

During starts from a stop truck will not have any throttle response. Push the accelerator more truck catches up after accelerator is mid way half throttle. Dealership couldn't duplicate, reset throttle memory without any change as of 04/22/2015.

- Pell City, AL, USA

Vehicle exhibits a shudder/vibration/shake when starting from a stop. Problem is more apparent with weight on the truck. With approx. 400-500 lbs. Or more problem is most apparent. At 300 miles, the problem became very noticeable. Informed dealer, set appointment. Vehicle had 800 miles at servicing, 2/23/2015. Dealer removed rear driveline and drove the truck with just the front driveline and shudder did not occur. Dealer replaced entire rear driveline and problem persists. After 8 days at the dealer service shop, customer was told the problem is normal, especially with any type of load. 400lb is a load"??? what happens when I attach a tow unit to this vehicle? is this safe? after acknowledging a problem and replacing the driveline, dealer now says this is normal and has something to do with the shocks and computer. But rest assured this is normal. Waiting for Ford factory representative to investigate. Problem is disturbing and one has to wonder what the long term consequences of this shudder is to the vehicle, vehicle driveline, etc. I was told numerous things by people at the dealer; salesperson said it was probably in need of a transmission reflash, shop foreman originally said maybe there was not enough grease on the driveline splines. Now it's the computer and the shocks" I asked the service mgr. Why they replaced the driveline if its a normal situation. He responded that they didn't notice the weight (400-500lbs under the tonneau cover) until after they replaced the driveline. One has to wonder about dealer competency when they apparently know a problems exist with weight on the truck, yet fail to check for weight on the vehicle. Also, is this not some sort of acknowledgement that there is a problem? as of 3/2/2015, the truck is still at the dealer. I've spent less than one week in the truck and over one week in a Ram 1500 rental truck. No new car joy here.

- Billings, MT, USA

Driving at 30 mph and suddenly an orange wrench shows on the instrument panel. The vehicle is unresponsive and shuts down into a safe mode where I have no power to the gas pedal but it steers and drives very slowly. It has happened 2 times since owning the vehicle for only 7 months, it's a scary position to be in when you're in the flow of traffic and suddenly aren't. I've read on line reports of this incident on several Ford products. I took it to the shop for service and they have no reason it's happening they indicated that since it's an intermittent problem there is nothing they can do to solve it.......nonsense.

- Hastings, MN, USA

I went to turn around off of a paved street. My front right tire feel into the mud. I told my wife we are stuck, then put my truck in four wheel drive, off road mode and sport track mode on the dash. I pulled forward about a foot or so and was stopped by something, I then went backwards. I repeated this for about five times. My daughter was hysterical for just being stuck, I turned and told her to calm down, when I turned back around I saw fire in the driver side mirror, I told my family " it's on fire, get out". I opened my door to get our and was engulfed by flames, I quickly exited the passenger side door. I yelled for my daughter three times, she had ran a long way away from the truck, because she was frightened. When I had her in my sight I started filming. She had exited out over the top of my son on the passenger side as well. My son said he heard a spewing noise while I was telling my 8 year old daughter to calm down. He slung my daughter out when he saw me become engulfed in flames. I was off the road less than a minute before I saw the flames, I started filming well within two minutes of being off the road and my 2014, ruby red, special edition one of a kind Ford F150, svt raptor was completely engulfed in flames in less than five minutes. Cause of fire is undetermined.

- Brookland, AR, USA

2014 Ford F-150. Consumer writes in regards to transmission noise when shifting into drive or reverse. A Ford engineer informed the consumer, Ford made a change in the transmission tail shaft, from roller bearings to ball bearings.

- Moro, IL, USA

Was traveling behind two vehicle doing approximately 50 mph in a 75. Went to pass and pressed the accelerator, and nothing happened. The vehicle starting shuddering, and stalled as I pulled along side the first vehicle. I let off the accelerator and attempted it again, still nothing. With loss of power, I had to move towards the shoulder since over taking the vehicle was impossible. The lasted for approximately 10 seconds, during which the check engine was flashing. Approximately 2 months prior, it happened while driving to dallas, but not to this extent. Weather condition for both incident was heavy rain, and I had been driving in rain for several hours. Engine code showed P0306 for cyl 6 misfire.

- Corrigan, TX, USA

The vacuum pump on the driver side is making a sound that it didn't before and it's getting worse.

- Washington, DC, USA

The contact owns a 2014 Ford F-150. While the contact was hitching a trailer to the vehicle, the vehicle rolled in reverse while parked. The vehicle rolled over the contact's left foot and the trailer crashed into a fence. The contact required medical attention. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The VIN was unavailable. The approximate failure mileage was 3,000.

- Liberty Township, OH, USA

New truck 2 weeks old went to pass another car and the engine cut out and almost stalled out.

- Old Orchard Beach, ME, USA

While accelerating the truck will make a whining/groaning noise coming from the transmission area and will go away once the truck has finished accelerating to the speed limit. The whole truck will also jump making a noticeable thud while shifting into reverse with the truck stationary and the brakes applied, it will occasionally do the same shifting into drive, again while stationary. When I park the truck on a incline big or small the truck will make a loud buzzing noise coming from underneath and a vibration can be felt that will last a few seconds to a minute, the sound can be heard shifting through P, N, D, R as well. The last issue occurs when the outside temps are cold and I drive the truck 15-20mins with a average speed of 50mph. I have taken the truck to the dealer who attempted to fix the issue to no avail. I have spoke with another dealer's service manager who was not very helpful in solving my issue. I'm currently in touch with a Ford regional customer service representative and in the process of going back to a dealer.

- Browns Summit, NC, USA