I have a '19 titanium and mine started that around 50k. Immediately, like everyone else, assumed it was fuel related. So I tried the seafoam and ran 93 in it. It is getting worse it would seem. I never imagined it could be the trans since it started before 50k actually. So here I am now, stuttering/slipping when going up a hill, below 40mph, or every 100 yards or so at 70 going down the highway. After reading this thread, I am getting a sick feeling about the trans thing since I am pushing 70k at this point, and still have over 3 years to go on my loan. I have had nothing but trouble with this car since I bought it at 30k. Definitely won't be visiting a Ford dealership again...ever.