The Liability Deposit is fully refundable, including the credit card surcharge, if the card used to provide the Liability Deposit is a Visa or MasterCard credit card, provided the Vehicle is returned without Damage. We recommend that you use a Visa or MasterCard credit card for the Liability Deposit, as the credit card surcharge that applies when using American Express is not refundable.  The Liability Deposit is refundable provided the Vehicle is returned on time, to the correct location, undamaged, in a clean condition and with full fuel tanks (fuel being petrol or diesel) and gas bottle.