Every make and model of a car has its own battery requirement. The requirement is based on physical dimension of the car battery tray as well as the AH (or Reserve Capacity) and CCA required. You can find out exact requirements of your car either by inspecting the existing car battery or in the owner’s manual.  As car battery specialists, FastFix will be able to advise the exact battery requirements if you tell us the make/model (and year) of your car.