My '04 has some loud lifter tick at startup but doesn't go away it is very irritating and kind of embarrassing. When you here it you think OH 150,000 km on it and i only have 25,000 km on it. It is going to go in to a M/B shop and i'm going to get it in writing and then i'm going to go to my service center and give them the estimate and diagnosis. As a mechanic my self this is not a normal sound that should be coming from an engine with this low km on it.