One problem related to engine exhaust system has been reported for the 2006 Mercedes Benz R350. The most recently reported issues are listed below.
My car has always been service by mercedes dealership. I barely drive my R350 mercedes. My check engine light came on and I was told that my balance shaft and intake manifold needed to be replaced. The dealer said its a common problem that occur with the 2006 and they are not sure why its not a recall.