LOL!!

I was surprised that he had not responded.... Anyway....
What was the switchover years for "bluetec"?
I was just looking at a 2006 320 CDI and there was no bluetec badge. I need to learn more about the changeover and the associated problems with each. I am just now learning about all of this. I have driven both 2004 and 2005's. I like the car. The power is pretty amazing when you push that little button. Was not expecting that.