If you have been injured in an auto accident, you can be compensated for emotional distress that rises to the level of “Mental Anguish”.
Emotional Distress (or mental anguish) is evaluated on a case by case basis. You would likely need to show that the nature, duration, and severity of the emotional distress/mental anguish substantially caused a disruption in your daily routine.
Thus, one would need to support an allegation of emotional distress/mental anguish with outside evidence, typically witnesses such as doctors and/or mental health professionals. Additionally, there is no set formula for a reward of emotional distress/mental anguish.