vibrating gas pedal

I have an '02 325i and when giving little or no gas when launching I feel a vibration on the gas pedal. I don't think it's clutch chatter because I feel nothing on the clutch pedal. It almost feels like something is loose under the car but I doubt it because if I increase the revs while releasing the clutch the vibration is gone. The car has pretty much done this since new...any ideas?

That's odd considering the only thing the gas pedal is attached to is the floor.

I interpret as follow: when give no gas or little gas when launch, the gas paddle shake.

I think it is because you give too little gas during launch, you engine is most stalled. It is the engine that shakes, not just the gas paddle.

eel

I guess it is possible the engine is close to stalling. Yet I'm not getting any of the typical bucking when close to a stall. The take off is still nice and smooth. I was taught never to give any gas until you feel the clutch start to bite to minimize wear...perhaps I have to change that habit.