How much does an exide cost for a mercedes- benz?

By "EXIDE" do you mean the main 12 Volt battery? MBz makes several models of cars. Over the years, there must be 25 or more models of the MBz. There are 4 door, two door, coupe's, sedans, convertibles, and even station wagons. The batteries are usually placed under the hood, passenger side, or in the trunk, passenger side. There may also have been a model or two with the 12 Volt battery under the rear seat, passenger side. Most important, is to make sure that the 6 battery cells have sufficient (distilled) water to cover the cells. When the water level gets too low or too full in a cell, there is likely to be a white corrosion formed. This must be cleaned away and the electrolyte restored to the proper level. There are some special simple volt meters available that can tell you if a cell is dead. A MBz car may not start when the 12 volt battery has only 5 working cells. Most auto parts stores can supply the correct size of 12 volt battery for your MBz. Just pay the money.