One problem related to side/window air bag has been reported for the 2015 Chevrolet Sonic. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Chevrolet Sonic based on all problems reported for the 2015 Sonic.
Passenger side airbag sensor light is inconsistent. With any passenger seated the "on" light does not stay on. It will sometimes come on temporarily then off again. This happens whether or not the car is in motion. I have noticed numerous similar concerns from others on line and even on this site.