The short answer is no, no one else besides BMW has any idea "realistically" what the mileage will be until BMW publishes it, and I have it on good knowledge from someone who works for BMW NA that the EPA tests haven't been done yet. Anything else is pure speculation.
__________________
The Coupe: 2016 M4 | Sakhir Orange | Black Full Merino Leather | CF Trim | M-DCT | More | ED 5/13/16
The Sedan: 2018 M3 | San Marino Blue | Black Full Merino Leather | CF Trim | M-DCT | ZCP | ED 7/18/18
The Roadster: 2006 Z4 | Interlagos Blue | Black Extended Nappa Leather | Carbon Leather Trim | Purchased 7/19/12
|