These are the 2 main transactions the debit/card card added to your account will be charged for:
Time charge: When booking is confirmed
Mileage charge: When booking is completed
These are some other transactions you may be charged for:
Extension charge: When booking is extended or auto-extended
Cancellation penalty: When booking is cancelled outside the free cancellation window
Late return penalty: After the auto-extension of 30 minutes has elapsed and every hourly thereafter