2016 Ford F-150 XLT 2.7L ecoboost automatic model with approximately 3,400 miles. Had already driven about 4-5 miles with engine already warmed up. Dry weather and about 69 degrees F outside. Came up to stop light with other vehicles ahead slowed down. Came to a complete stop and the auto-stop function engaged and the engine shut off. The roadway was fairly level. Waited approximately 20-30 seconds until light turned green. Traffic ahead started to move forward. I let off the brakes and the auto-start engaged. I continued to ease off brakes and allowed the truck to roll and idle forward with the flow of the vehicles ahead. I then applied my foot on the accelerator and began accelerating with the flow of the traffic. All of a sudden, the engine shuts off. At first I didn't realize it had shut off and was surprised that I wasn't able to accelerate anymore. Then I looked at instrument panel and saw that the speedometer was reading 17 mph and slowly dropping as the truck was just coasting along. My first thought was that maybe I had accidentally thrown it into neutral somehow, but the gear was still in "D" and applying gas did not move the tachometer as it had dropped to zero. Then I saw the battery symbol pop up. This is when I realized the engine had shut off during acceleration, possibly during gear shift sequence. At this point the vehicle is still rolling roughly 10 mph, so I engage it into neutral and crank the ignition and it starts up again. There is traffic behind me at this point so I change gear into "D" and am then able to accelerate normally up to proper speed. I could not recreate this again for the next 5-6 miles home, even with numerous stop lights where I would recreate the same auto-stop/start and accelerate actions.

- Sterling, VA, USA

Unintended acceleration. Ecoboost F-150. Less than 200 miles on odometer. At stop with foot on brake whole time, vehicle did not move. Engine revved up, then settled down, revved again, settled down, then revved very high, rear tire spinning until ignition was turned off.

- Kalispell, MT, USA

Throttle body failure while driving at 75 mph causing vehicle to shut down in high-speed traffic [failure defined by dealer service person].

- Lehigh Acres, FL, USA

The contact owns a 2016 Ford F-150. While driving 65 mph, the vehicle stalled and the check engine and traction control warning lights illuminated. The contact pulled the vehicle over to the roadside and was able to start it after multiple attempts. The failure recurred intermittently. The vehicle was taken to the dealer where it was diagnosed that the throttle body failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 9,300.

- Texarkana, AR, USA

So I've got 16,000 miles on my new 2016 F150 truck. Last week I was cruising down the highway in the fast lane when all of a sudden the truck shudders then loses all drivetrain power. The engine was still on but only operating at btwn 600 and 800 rpms but the accelerator was unresponsive. Was no fun trying to make it to the shoulder with no power. One week later, same thing twice on my way home from work. Called the dealer and they didn't seem overly concerned that my new truck was stranding me in the fast lane with no power. They said bring it in at the end of the week and we'll take a look at it. So I start researching the problem and can only find related articles from around 2012 when Ford was having problems with humidity in its new ecoboost engines. I live in California where the humidity is not very fierce so I don't know if this is the problem or not, but after reading some posts on how Ford dealt with this problem before, I'm not very optimistic on the outcome this time.

- San Francisco, CA, USA

My 2016 F150 has adaptive cruise control ("acc") that applies brakes in the event a vehicle is detected in lane ahead in order to match speed and maintain safe distance. F150 also has collision avoidance system that increases sensitivity of brakes if imminent collision is detected. 2015 Ford F150 has been subject to a recall (NHTSA campaign number: 15V614000) to fix problems with acc - the acc may falsely detect an obstacle in its path and may unexpectedly apply the brakes increasing the risk of a rear-end collision from a following vehicle. My 2016 F150 was built after the date covered by the recall however it exhibits the exact problem described in the recall I.e. the problem continues to exist with Ford's acc system and the recall was insufficient. In my case, on four separate occasions from 3/19 through 3/26/2016 the acc system activated unexpectedly and for no reason, causing heavy braking and in one case almost causing collision with a following vehicle. The collision warning lights also lit up - this system may itself have increased severity of braking. Braking events occurred with two different drivers, on straight freeway, no steering input, no bridges, or safety barriers to confuse the acc radar. In all cases we were driving in left lane of a two lane freeway, approaching to pass a large vehicle travelling in right lane - a semi-truck in two cases, empty car transporter in other two. The vehicle being passed was well in its lane and not drifting over or presenting any danger to our vehicle. Ford's response has been that this is "normal" and was due to our driving on a curve, or other vehicle drifting over or some road "furniture" like a bridge / barrier confusing the system. However, none of these factors applied.

- Bloomfield Hills, MI, USA