I've got an acquaintance with a GLx with the turbo 4 engine. It may be a GLB, I don't remember. Anyway he had the cylinder head replaced by MB under warranty. The other day he was driving he said the engine split? Not sure exactly what happened but it was a catastophic failure at 52k miles. Reading a little in google it sounds like they have a rep for putting rods thru the block. Now MB is putting a replacement engine in it. Has anyone heard of the turbo 4 in the late model cars being problematic?

I'm now reading too to steer clear of the 48 volt system (I'm assuming like in the GLS450) hybrid with the inline turbo six. Based on a couple post on MB World it sounds like it is problematic too.

Any comments regarding issues with these systems? I was considering buying a used GLS with the inline 6 but have backed off of that thought until I read more about it.

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Jim