A passenger in most situations cannot be found at fault for a car accident. If, for instance, the driver turned to talk with you and took his or her eyes from the road, if an accident resulted, that is not your fault as the passenger.
However, there are certain cases in which a passenger could be held partially responsible for a car accident. If, for example, you are the passenger and you encourage the driver to speed or drink and drive, and it results in an accident, you may be held partially responsible. If the passenger yanks the wheel causing the driver to crash, then the passenger may be liable for the accident. In these types of cases, a passenger injury claim against the driver would likely fail to win compensation.