BMW will be bringing over the 3.0L TT diesel engine after announcing the 335d for canada. Competing against the 335i it has the numbers to back it up, so imo it would be a tough choice on which to choose.
286hp/427tq with all of that at 35mpg
http://www.leftlanenews.com/bmw-to-b...els-to-us.html
http://wardsauto.com/ar/bmw_diesel_us/