I've had my new Ford Focus for less than 2 months. I'm about to take it back to the Northside Ford Service Center in San Antonio, which will make my fourth time to have it back in service since I bought it. At very low speeds, like in stop-and-go driving, with light breaking pressure, the car shakes and shutters. At first I was told it's just the way the new transmissions are. I drove to another dealership and drove another Focus. The problem was not there. So I took it back in and was they given a copy of a service bulletin that says the shuttering problem will soon clear up and the clutches needed time to break in. The problem got worse. I took it back in a third time, and on the way a cooling fan motor burned up, and after a week they said the cooling fan motor was replaced and the shuttering couldn't be felt. Well I drove it off the lot, turned around, and asked the service rep to go for a ride. When I showed him what I had been experiencing he was wide-eyed and went back in to get the transmission expert who also took a ride and said that's a real problem because our legs were shaking inside the car. The tech then agreed that he would not be happy paying $21,000 for a car that acted this way. So now, I'm leaving it at the service center again. Oh, and the trans tech now says he thinks if may be a braking problem. Has anyone experienced the same thing? I'm very, very close to just parking it and hiring a lawyer. I feel taken for a ride, and not in a Ford Focus.