One problem related to engine stall has been reported for the 2015 Ford Mustang. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Ford Mustang based on all problems reported for the 2015 Mustang.
Engine stalls during idle at stop signs and stop lights and also stalls during initial acceleration under 10 mph. This has happened at least 25 times over the past year. There are no fault indications on the dash. I place sifter back in "park" and engine restarts until the next time it stalls. There is no prior indication of any kind that the engine is about to stall. The engine simply shuts off. Have taken the car to the dealer to determine the cause twice. They cannot determine the cause so make no attempt to do any component replacements. I contacted Ford motor customer relations and they started a case file on this, cas-12064085. I have expressed my concern over and over again that my car may stall at the wrong place at the wrong time and possibly cause a collision. Both the dealer and Ford motor company seemed "totally" disinterested. All they say is "sorry we cannot help you".