In addition to the monthly rate, you will be responsible for a one-time enrollment fee charged at the time of booking. This fee is in consideration for your right to participate in the SIXT+ program.
When renting a rental car, it is also common to leave a deposit as security for the rental car. This deposit amount is reserved on the means of payment upon collection and depends on the rented vehicle group. After the first rental term, the deposit will be released to your payment method.
You are also responsible for any fees and penalties as enumerated in each rental agreement, unless such a specific fee or penalty is specifically excused by the terms and conditions (the "Miscellaneous Fees"). These include but are not limited to tolls, speeding tickets, parking tickets, etc.