JCL, your comments are appreciated.

I will comment only on your analysis of my post.

You entirely misunderstand the intent of my post. I don't care what the actual numbers are or where they were tested. As long as they were tested the same way and showing the 35d with lower fuel usage and CO2, I was responding to the OP. You may consider the info on the 40d a bonus.

A lot of variables but twisting the numbers to justify a 35i purchase over a 35d purchase in the name of better fuel economy is so wrong.

Additionally, I understand that diesel fuel is the waste product of gasoline, lubricant and plastic creation from a barrel of oil. Another bonus.

I'd also like to see a 8spd 35d v. 35i as the 8 speed adds over 6% mpg improvement per a BMW quote I previously posted. The bonus info on the 40d may be closer to 35i apples to apples, with the 35d in its 3rd year and the 40d for the US inevitable.