A couple months after buying my new car, I noticed the transmission would start to shudder and/or buck when accelerating after a stop. Contacted the dealership and have brought it in 3 times with no one at the dealership being able to "recreate" the problem and therefore they couldn't fix it. They also said that because of the type of transmission, the problems I was describing are to be expected. How could a company release a transmission that is "supposed" to buck and shudder? problem has continued to get worse and I have now experienced several incidents that I feel are very dangerous. One occurs when I approach a stop and I am applying the brakes, the car will rev up and accelerate on its own, almost causing me to go into traffic. Another incident is when I am at a yield and don't come to a complete stop, then accelerate to merge with traffic, the transmission skips/stutters/shudders delaying my acceleration and making the merge dangerous. The problem is intermittent, and does not occur at every stop/yield. I am afraid to drive my car because I never know what or when it will happen again.

- Rochester, NH, USA

Ford Fiesta 2014 engine excessively trembles/jumps when I accelerate from a stopped position. The car does accelerate on itself at times mostly when I have ac on or after turning it off. Ford should recall this car now. Or fix this car and provide customer with a paid rental car while this one is being fixed.

- Bell, CA, USA

When I try to accelerate when getting on the highway to go home from work it will not let me and try to stall and it will take it quite a bit of time to finally let me push on the gas and get going again. It has done this a couple of times now and a couple of times when leaving an intersection after stopping at either a stop sign or a stop light.

- Oklahoma City, OK, USA