BMW 3 Series F30 (2012-2019) Questions & Answers

If its brand new, then go for it. Just make sure that you ask for the full specification to make sure exactly which options the car has.
If its used, make sure that that it has a precise service history with no skipped or overdue servicing. Check the 'service requirements' with the I-drive controller to make sure things like brake pads, filters etc aren't nearly due for replacement. Diesel servicing prices are a little more expensive than petrol.
If you have the VIN number, use one of the free BMW VIN decoder websites to check out exact build date,where it was built and the full detailed specifications.

Thank you so much

Sorry I dont have any knowledge on this

If it's new why aren't you taking the car back to the dealer?
If you're already not getting any satisfaction there I would call BMW Australia and make the problem as public as you can on social media.
Creaking on undulating surfaces sounds like a chassis/suspension problem - maybe a suspension mounting or joint that isn't properly seated or tightened, or perhaps a faulty Macpherson strut. You could get a workshop to check it out but this shouldn't be your problem - it's has to be a warranty issue.

I am taking the car back to the dealer, who believes the creaking noise is coming from the door seals, that some coating on the rubber seals was removed in the pre-delivery process. The reason for my question was to determine how prevalent is this issue with other owners.