Have a 2012 Fiesta with 19,000 miles and for the last two weeks been experiencing possible transmission problems. The car has a 6-speed automatic transmission in it. When the car starts up from a dead stop, it immediately shudders a little (like a fouled spark plug or transmission slipping a little), then right after 3rd gear shifts, another shudder happens like you're driving over a few ripples in the road. No symptoms like these at highway speeds or when the motor is cold. These things are now happening about 90% of the time. Talked with my Ford service manager this morning about this and he told me he has had many complaints from Fiesta customers about these same symptoms. He went on to tell me it is the 6-speed transmission doing this and not a fouled plug. He told me I would probalby have to live with these things because it's just how the transmission was designed. I don't think I will accept that. Has anyone else had these problems and if so, what have you been told? ..... I am taking the car to the dealership later today for them to check it out.