Well my Ford Fiesta had less than 1800 miles on it when the transmission started chattering while holding a steady traffic speed of 30 MPH after it warmed up. Now it does it bad between 30 and 55 MPH, still after it is warmed up.
Its fine when its cold. Also twice after putting 2900 miles on the car, the transmission would not release when trying to stop at a stop light.
It drove me through a red light, TWICE.
It was as if I was driving a manual transmission car and forgot to put the clutch in.
Scared me to death, but Im forced to keep driving it.
Took it to Kline Motors, a Ford dealership in Winfield KS.
They said they worked on it for 2 hours and charged over $172 and did nothing.
Make an automatic transmission that really works and will last.