natescape--I had the same thoughts after I got my '96 Passat TDI. I think there are two issues going on here. 1) The TDI is a "drive-by-wire" design that does NOT use a mechanical link between the "go" pedal and the throttle, or intake or whatever. A computer "interprets" the electronic position of the go pedal into fuel requirements, etc. This design necessarily creates a very minor delay from "stepping on it" to action. 2) The turbo. The turbo provides boost from exhuast gasses. At low RPM's, there aren't enough gasses flowing to give much boost. But give it a few revs, and whalla, TURBO BOOST!!! This feeling is different from most naturally aspirated gas engines I have ever driven.--Steve