1.8T loosing coolant.
 

Hey all, purchased a wagon about 5 months ago, seems to be using a lot of coolant, white smoke is sometimes there but doesn't linger so I assume this is condensation haven't had to fill coolant for the time I've had it until about 2 days ago and filled a tiny bit in still below the minimum line but alert went away but checked this morning and it's gone down a bit please
Advise