Why do you feel automatics are more fuel efficient than manuals?
No computer can anticipate my needs, thus I can extract the exact performance, or fuel economy I want.. when I want. Long overpasses in neautral rolling for a mile while idle (ie: in neautral)..? BMW's tranny's is still engaged, lagging me with their auto, etc..
I might just pick up a BRZ (etc) and trash it for 2~3 years. At least it is purchasable... unlike BMW's disrespectful pseudo floorplan which is all smoke & mirrors and nothing of substance.