Audi A5 Water Leak

Audi A5 Water Leak. I have the same problem, came here looking for a solution. It's a5 2.0t quattro 2011 model.

The water leaks in around the seal of the rear convertible top lid, the lid that covers the top when down. Hi lads, i have a 2007 a5 3.0tdi v6 its loosing water , and there is exhaust gasses in the coolant, i took it back to the garage and it’s under warranty and the guy thinks it’s the head gasket.