I took my car for an oil change and was told that it would be $7,500 to fix an additional problem. According to them my car had a cracked head gasket. I did not think that sounded correct so I picked up my car and asked for a printed estimate, After much confusion and waiting, I got a white piece of paper with parts listed (no price with each), total of parts at the bottom, and total labor (no hours listed). That is not an estimate. I was very suspicious of this so I made an appointment at Euro Motorcars of Germantown, Maryland for a 99 point check. They did not charge me to put it on the machine and do the 99 point check nor did they charge me for the loaner. The result: My car needs no work at this time. I also took it to a non Mercedes dealer and had the same result; you need no work at this time. I have gotten all this information in writing. Now I wonder how many times I was told something was wrong and charged an outrageous price for something that wasn't really a problem. I am putting this out there so that everyone can beware of this dealership. I know that most people do not have that kind of money to throw away and even if they did they would prefer to spend it on something else.