If you dream of a car accident, it can mean you didn’t have control over your vehicle. The dream interpretation can be a warning to you, to exercise more control over what you do. If you were careful and more in control, you may have avoided the accident, or reduced the impact of the accident.
Another dream interpretation of a car accident can mean the destruction and stoppage of the car’s journey. The journey can be a reference to a project or current work. Thus, the sum total of this dream can be about the failure or interruption of a “journey or work” in progress.