Engine And Engine Cooling Related Problems of the 2006 Mercedes Benz ML63

Manifold/header/muffler/tail Pipe problem

While driving, the check engine light came on and the vehicle started making a rocking mothin, did not know waht was going on and so I stopped vehicle on the shoulder. I checked the gas tank to see if there was a problem with the cover. Went back in the vehicle and tried to retart, vehicle would not start. I called the tow truck and had the vehicle towed to the dealer. Spent $576. For diagnosis and was initially told that the cylinder head was bent and the intake manifold had a problem. I was told me that I may need a new engine. I was told that it will cost $5600 to fix the problem after I complained to the corporate office then I was told that it would be $4300. Ii still do not have my car up to now because I was made aware that car needs a new engine. My car only has 84,000 miles. Very very upset with mb.