The answer to your question will depend completely on the specifics of how the damage occurred. The gas station will pay for the damage if:
- If your vehicle was not moving and the brushes or moving parts of the car wash damaged your vehicle then the liability would be on the owner of the wash.
You will have to file a claim if:
- If you were in control of your vehicle when the damage occurred - for instance, you drove your car into something in the process of washing the vehicle
Either way, you can contact your car insurance company to begin the claims process. Once your company determines how the damage was caused then they will either require that you pay your deductible, or require the car wash owner pay for the repair.