I hope BMW releases the 2 series diesel in the first year of production and doesn't make us wait a year or two for it.
They already have a 3 series diesel on the road but it will take some time to properly integrate the diesel drivetrain into the 2 series chassis, which leaves me to believe a 2 series diesel can happen at any time.
A diesel would be a great idea, but I doubt it will be released in the first year. Unless it's already in the work and BMW is just waiting on the reveal. But I think we should have atleast heard something by now.