Two problems related to loud engine noise have been reported for the 2011 Ford Fiesta. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Ford Fiesta based on all problems reported for the 2011 Fiesta.
Vehicle shudders and stalls when taking off. Vehicle will stop fueling when pumping gas. Engine makes a loud noise and vehicle has large water leak.
Under warranty and with very few miles on the car, the dealership fixed my Ford Fiesta after I reported the car stalling. This problem was happening within the first year. I could be in the middle of an intersection waiting to turn left, idling in traffic, stopped at a light. . . Car might stall. I dreaded being on a busy socal highway stuck in traffic because the car might stall and often it did. I was told it had something to do with oxygen or lack thereof. Fast forward two years. My car started stalling again but this time it also seemed to hesitate, jerk, or not respond when I accelerated. Then the engine light came on. (side note: during the last year the ac stopped working properly and was making a horrible noise. A mechanic quoted $1000 for a new condenser & compressor). Well, with these last two problems I am no longer under warranty. My car was diagnosed with a bad throttle body sensor ($880 repair). I have researched online and heard from others that this is all too common with Ford Fiesta's and other Ford models. I have called Ford motor company to report this and complain about these problems. They opened a case number and directed me to ask the dealership where I took it for repairs if they would help out. They did not help with the throttle body repair. I learned just yesterday that a family member with the same car with low miles - 2011 Ford Fiesta - is complaining of the same problems. Sounds very much like he may be faced with the same, expensive repairs. I hope there will be a recall for this throttle body sensor problem. This stalling and acceleration issue is a real safety hazard. It is not only very nerve wracking in traffic, but is dangerous as well because the car can stall at any moment.