I have a 2007 Vauxhall 1.4 Corsa it had a brand new head gasket fitted 2 years ago. Now though it is losing water after the engine has warmed up and I turn it off the water tank just completely drains I took it to a garage and he just said it needs a new engine!?!?
Sounds quite plausible. The current water leak may not be related to the head gasket – there could be a leak somewhere else in the system. If it needs a new engine, it could be that a significant amount of damage has already been caused to render it beyond repair.