When using a Zipcar, members are expected to return the vehicle in a reasonably clean condition. This includes removing personal belongings and ensuring that trash is disposed of properly. However, it is important to note that members are not required to perform an extensive cleaning before returning the car. In general, Zipcar expects vehicles to be returned in a state similar to how they were found. If there are any excessive messes or damages, a cleaning fee may be applied. For specific guidelines on cleanliness and fees, it is advisable to refer to the terms and conditions on the Zipcar website. Always review those details to ensure compliance with their requirements.