Hi,My 2008 is at Mercedes after the engine light went on. They have told me it needs a new transmission. The only clue I had was that it had a loud road noise when my foot was lifted off the gas pedal. They have had it for two weeks now and have put 2 transmissions in it and have phoned to say they have ordered a third and my car will be in the shop for another ten days at least. Luckily, it is still under warranty for another 1600 km and they have given my a courtesy car. Any thoughts? Any people with similar stories? It seems hard to believe that two new transmissions have been faulty. Thank goodness I have a little warranty left and it wasn't the other side of 80k.