Welcome from Tasmania, Australia.
It all depends on the money you wish to spend, the automotive skills you have and the access you have to knowledge. Some bits of these cars require more knowledge than independent mechanics have and more knowledge than many
Mercedes dealers wish to impart. For example, can you fix an errant
ECU? A defective Transmission Control Unit? You may need to if you buy a "Cheap"
Mercedes.
On the other hand, you may just be lucky? You have to ask yourself one question: "Do I feel lucky?". Well, do you .....?