The fees can cover those costs that arise due to non-compliance with rules, for example because the preceding driver does not return the vehicle on time, the following driver therefore looks for an alternative mobility offer and you as the provider have to forego revenue as a result. In order for the fees to cover these costs, the fee should be at least as high as the costs incurred by the sharing provider. The same applies if the fees are intended to recover expenses for services rendered. If the sharing provider has to get the vehicle cleaned due to its cleanliness state, these costs can be passed on to the driver. Thus, in order for the fee to cover the costs, the fee must be at least as high as the cleaning fee.