Can I sue the driver of the car I was riding in if I was injured in a Mississippi car accident?

If the driver of the car that you were riding in was negligent and caused your injuries, then in Mississippi you can maintain a lawsuit against that person. The driver has a duty to use reasonable care in the operation of his vehicle. That’s a legal term that means he’s supposed to drive and not cause an accident or injury. If he doesn’t do that properly and does cause your injury, then yes, you may maintain a lawsuit against him.