Car Depre Singapore CarDepre SG is a tool for car buyers in Singapore to calculate the annual depreciation of a car. It also helps to determine the Preferential Additional Registration Fee (PARF) rebate upon the expiry of COE. The value of the COE is a major factor to owning a car in Singapore as it contributes to the yearly depreciation of the vehicle. The yearly depreciation provides the buyer actual depreciation of the car they are buying. An additional feature in this tool includes a financial calculator which aids the buyer to calculate the monthly repayment of the loan.