Manual Transmission Noises

I have a 2000 VW beetle with a fairly new clutch (2 yrs old). My boyfriend is new to a manual transmission and I can’t say I know much about how it works either. A few times when he was driving he will reverse out of a parking spot and then shift to first and the car will make a deep rumbling noise. We turn off the car and turn it back on and its fine. Is the car stuck between gears? Why does it make this noise?

Is the car still rolling when he shifts from reverse to first?

Yes it is!

Don’t do that.

Check the motor mounts and take the keys away from the boyfriend…