Where is the gas cap release located for Audi quattro wagon?

In an Audi quattro wagon, the gas cap release is typically located inside the vehicle, on the driver's side. Look for a small lever or button near the driver's seat, often on the lower part of the dashboard or near the door. Some models might have a push-to-open cap, which does not require a separate release. Always refer to the owner's manual for specific details related to your model.