One problem related to engine failure has been reported for the 2010 Ford Focus. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Ford Focus based on all problems reported for the 2010 Focus.
My son was driving in the car pool lane when the car came to an abrupt stand still. It turns out the compressor failed and threw its parts all over the engine compartment damaging parts of the engine. When the engine failed, he lost braking and steering abilities. Compressors do not last forever. However, when a compressor quits working that should be the extent of the failure. This compressor failed and basically came apart. The car not working in the middle of a car pool lane put my son and his wife in danger as there was no where to get out and no way to move the car.