I will ask him Monday about the timing belt. What does a repair like that cost? timing belt and or connecting rods?

I have to see im Monday, as the turbo seems to have stopped working. The car has no power when climing hills, and smokes like crazy.

My mechanic made an adjustment one time when it lost power, and it ran well, but now it is like it was, and I have no idea what he did. Is there an adjustment that can be made?

I has had the trap oxidizer replaced, does Mercedes still warranty the turbo like it did with the trap oxidizer?

Thanks