Engine Oil Leaking problems of the 2013 Ford Fiesta

A year and a half ago I brought my car, 2013 Ford Fiesta in for a regular oil change and the shop notified me to bring car to Ford dealership immediately for a major oil leak fix, which, I had thought was the reason for my car sputtering and hesitating from a complete stop to acceleration. Ford fixed oil leak and report had also claimed the transmission was removed to clean up "contaminated clutch". After, my car seemed to run smoother and acceleration and sputter was alleviated. A month later my car began intensely sputtering and in a couple instances would begin to accelerate then completely stop even though my foot was on the gas pedal. It seemed to stall out one time and I was almost t-boned by a car coming around the corner, even though I would have had plenty of time to turn if the car accelerated properly. Months pass and my car was still acting weird, shaking when in a low gear and struggling to accelerate. At 35000 miles I brought the car in(still under warranty) and they fixed the clutch in the transmission. Upon leaving the shop the car felt better, but still had a shake to it, especially on hills. I called colonial Ford and notified them it needed to be fixed again (this was four days after I picked it up from being fixed) they told me it was fixed to "their standard" and the sputter is "always going to kind of be there". My concern is my safety, I do not feel safe at all driving this vehicle and I do not want to endanger anyone else on the road. It's bothersome that I'm paying for a broken car that I do not feel safe in.

First noticed a leak stain on my drive so took it in Ford dealership they didnt put it on hoist just laid under it said OH no its fine so I drove it longer took it in to local speed lube to get oil change and they wouldnt touch it saying that I was leaking transmission fluid so I drove it straight to Ford dealership finally they put it on hoist and said OH yeah it is leaking I have a list of everything they did to it ( but its in the car and the car is currently back in shop so I dont have it with me) picked it up several days later on the way back to work the engine light comes on again so I take it back they say it was the computer stuff needs reset so by the end of my workday I picked it up about a mile it seemed fine next day engine light comes on again the car was jerking would not eccellerate almost got into a wreck took it right back to shop 4th time now. . . At one point while driving it my son was with me and asks what are you doing mom I tell him its not me its the car and I know its suppose to shift and it has since I've bought it but never like this. . . .