Jup. I'm a former commie.
But when I joined the army we were already united and so I joined the Bundeswehr.
But my father served in the east german army (NVA).
The Leo has no big problems just the normal things.
Some broken engines, FCSs, turret hydraulics, TIs, etc.
Just the normal things which occur on armored vehicles during and after some weeks of training and live fire exercises.
Plus the normal maintenance on the engine, tracks, chassis...
Not much more and not much less than I know from units with Challi 2, Abrams, T-72, etc.