Check before buying an old Mercedes Benz

As far I know, Mercedes Benz, especially C generation, has weakness in the electricity network. So which be aware is the circuit wires car that. Having inspected the cables and networks it, we must also check the air conditioner, still cold or not. This is important because the module air conditioner of mercedes benz often silly. And also should be a concern when buy old mercedes benz, you should look for which have low-mile and have service record which clear.