Two problems related to car stall have been reported for the 2009 Audi A4. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Audi A4 based on all problems reported for the 2009 A4.
The high-pressure fuel pump failed, which caused the vehicle to buck suddenly and stall while driving in traffic.
Vehicle was in motion on a suburban road, driving forward, when it developed forward/bucking motion before stalling/stopping in traffic. Upon dealer inspection, the vehicle's high pressure fuel pump was found to have failed, which directly caused a failure of the engine cam shaft, resulting in a costly repair to correct.