My apologies for being pedantic but your post is confusing. The E70 diesel currently sold in the US is the 35d, not the 3.0d. The 3.0d designation refers to the single-turbo diesel used in the E53 and initially for the single-turbo diesel in the E70 although that designation was later changed to 30d. Neither the 3.0d nor the 30d have been sold in the US. Likewise the 40d is not a 4.0d. In some markets the 35d was also initially called the 3.0sd. All of these engines, 3.0d, 3.0sd, 30d, 35d and 40d are all three-litre. I also believe that the proposed tri-turbo 45d is also a three-litre engine.

Again, my apologies for being pedantic it's just nice to be all singing off the same song sheet.