07 auto c230 , Obtained Ownership 59k in Oct. 2009 The carfax was clean, trans. replaced at 49k by MB. I took the car and was impressed for a 2.5L that it had some performance. I am aware of the balance shaft problem. I had a build date of SEPT 07, so I was in the clear. The transmission shifted smooth and responsive. I always changed the oil with Mobil Synthetic 0W-40. Solid suspension, smooth car, felt safe. Very comfortable car even on long and short drives. I would get about 17city, 33hwy and always filled it with 93 Octane. Lost it during Hurricane Sandy with 84k. Let me just clarify if you maintain the car with a good quality of gas and oil you shouldn't have issues.
