That "stealership" service you are referring to is "required" maintenance, otherwise known as "preventative maintenance" which prevents things like say, clickety clack noises and sludge in the oil.

They are important because not only do they replace engine air and cabin filters along with the engine oil and filter, but it also gives the technician an opportunity to find things that may be presenting themselves such as oil leaks, or worn or even missing parts.

Sounds like you are learning the hard way.

Mercedes are very high maintenance vehicles, and yes can cost some money from time to time, but preventative maintenance is key to keeping money "in" your wallet in the long run.

I swear, mercedes need to put big stickers in their cars on the visor that says "If you can't afford to service your Mercedes, don't even think about buying one."

Not trying to be a jerk, I just hear this stuff from cheap customers all the time that ***** and moan about service costs, then end up doing major damage to their car by neglect and end up crying like little kindergarten babies when something breaks.

I don't think you will get too much sympathy about your situation.