I have a 4year old Mercedes SL350, which has done 16,000 miles. It has developed a leak into the boot. I am told by the local Mercedes independant specialist that "They leak when they leave the factory !- and No thanks I don't want to get involved." I'm told by the local Mercedes dealer that the used car warranty doesn't cover this, because they've tried before as it's a common fault. To complicate things, Mercedes also put the central locking mechanism in a sump in the boot. There's more to this story, which has already cost me £1160,and not been solved, but before I write to Mercedes, I'd like to know if others have experienced this fault and what they've done about it.