Mine's (Cielo) has now been in the dealership for as long as I had it post-delivery - 4 weeks to fix a stereo and so far they've no idea when they'll get the parts from the factory. C'mon Maserati! You've the chance to improve your reputation immeasurably, please don't blow it!
Apparently they're having generally bad parts supply issues, but aren't helping themselves by the "ahhh luigi we try this part and then if it no right, we send you another part to try" - rather than 'here are the 2 or 3 parts - they're fairly modest, not expensive, see what works and send any spares back'. When you're spending this amount, something a bit better is expected.
Minor rant over (not enough swearing, I know), Maserati UK are on the case with the factory apparently. I await progress...